This patch adds the basic clocks and timer support for the Allwinner A20 (sun7i) processor. This code will not been compiled until the build is hooked up in a later patch. It has been split out to keep the patches manageable.

Some of the code here is common to multiple sunxi subarchtectures, hence files are named sun4i which is the earliest similar variant.

Signed-off-by: Alexandru Gagniuc mr.nuke.me@gmail.com Signed-off-by: Chen-Yu Tsai wens@csie.org Signed-off-by: Emilio López emilio@elopez.com.ar Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Henrik Nordstrom henrik@henriknordstrom.net Signed-off-by: Jens Kuske jenskuske@gmail.com Signed-off-by: Luke Leighton lkcl@lkcl.net Signed-off-by: Oliver Schinagl oliver@schinagl.nl Signed-off-by: Ian Campbell ijc@hellion.org.uk Cc: Stefan Roese sr@denx.de Cc: Tom Cubie Mr.hipboi@gmail.com --- v5: Based on 3f5ff92b1503 "sunxi: add comments to pll1_para array." - add comments to pll1_para array. - hz parameter to clock_set_pll1 => an unsigned int.

v4: "Based on d9fe0a1e061e "sunxi: mksunxiboot: remove unnecessary casts." - clock_get_pll6 moved to clock_sun4i.c. - fixed coding style of comment in read_timer.

v3: Based on c89867dca2e9 "sunxi: clocks: clock_get_pll5 prototype and coding style".

v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc: checkpatch whitespace fixes" with v2014.04-rc2 merged in: - define magic numbers - simplify get_tbclk - correct clock_set_pll1 prototype - add CONFIG_SUN7I to simplify future SUN?I support. - defines for MMC AHB clocks

v1: Based on u-boot-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in ldscripts" vs v2014.01. --- arch/arm/cpu/armv7/sunxi/Makefile | 12 ++ arch/arm/cpu/armv7/sunxi/clock.c | 25 +++ arch/arm/cpu/armv7/sunxi/clock_sun4i.c | 188 +++++++++++++++++++ arch/arm/cpu/armv7/sunxi/timer.c | 113 ++++++++++++ arch/arm/include/asm/arch-sunxi/clock.h | 29 +++ arch/arm/include/asm/arch-sunxi/clock_sun4i.h | 256 ++++++++++++++++++++++++++ arch/arm/include/asm/arch-sunxi/sys_proto.h | 16 ++ arch/arm/include/asm/arch-sunxi/timer.h | 88 +++++++++ 8 files changed, 727 insertions(+) create mode 100644 arch/arm/cpu/armv7/sunxi/Makefile create mode 100644 arch/arm/cpu/armv7/sunxi/clock.c create mode 100644 arch/arm/cpu/armv7/sunxi/clock_sun4i.c create mode 100644 arch/arm/cpu/armv7/sunxi/timer.c create mode 100644 arch/arm/include/asm/arch-sunxi/clock.h create mode 100644 arch/arm/include/asm/arch-sunxi/clock_sun4i.h create mode 100644 arch/arm/include/asm/arch-sunxi/sys_proto.h create mode 100644 arch/arm/include/asm/arch-sunxi/timer.h

diff --git a/arch/arm/cpu/armv7/sunxi/Makefile b/arch/arm/cpu/armv7/sunxi/Makefile new file mode 100644 index 0000000..440d266 --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/Makefile @@ -0,0 +1,12 @@ +# +# (C) Copyright 2012 Henrik Nordstrom henrik@henriknordstrom.net +# +# Based on some other Makefile +# (C) Copyright 2000-2003 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# SPDX-License-Identifier: GPL-2.0+ +# +obj-y += timer.o +obj-y += clock.o +obj-$(CONFIG_SUN7I) += clock_sun4i.o diff --git a/arch/arm/cpu/armv7/sunxi/clock.c b/arch/arm/cpu/armv7/sunxi/clock.c new file mode 100644 index 0000000..47fb70f --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/clock.c @@ -0,0 +1,25 @@ +/* + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * (C) Copyright 2013 Luke Kenneth Casson Leighton lkcl@lkcl.net + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/gpio.h> +#include <asm/arch/sys_proto.h> + +int clock_init(void) +{ +#ifdef CONFIG_SPL_BUILD + clock_init_safe(); +#endif + clock_init_uart(); + + return 0; +} diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun4i.c b/arch/arm/cpu/armv7/sunxi/clock_sun4i.c new file mode 100644 index 0000000..5a7da3c --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/clock_sun4i.c @@ -0,0 +1,188 @@ +/* + * sun4i, sun5i and sun7i specific clock code + * + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * (C) Copyright 2013 Luke Kenneth Casson Leighton lkcl@lkcl.net + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/gpio.h> +#include <asm/arch/sys_proto.h> + +#ifdef CONFIG_SPL_BUILD +void clock_init_safe(void) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* Set safe defaults until PMU is configured */ + writel(AXI_DIV_1 << AXI_DIV_SHIFT | + AHB_DIV_2 << AHB_DIV_SHIFT | + APB0_DIV_1 << APB0_DIV_SHIFT | + CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); + writel(PLL1_CFG_DEFAULT, &ccm->pll1_cfg); + sdelay(200); + writel(AXI_DIV_1 << AXI_DIV_SHIFT | + AHB_DIV_2 << AHB_DIV_SHIFT | + APB0_DIV_1 << APB0_DIV_SHIFT | + CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); +#ifdef CONFIG_SUN7I + writel(0x1 << AHB_GATE_OFFSET_DMA | readl(&ccm->ahb_gate0), + &ccm->ahb_gate0); +#endif + writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg); +} +#endif + +void clock_init_uart(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* uart clock source is apb1 */ + writel(APB1_CLK_SRC_OSC24M| + APB1_CLK_RATE_N_1| + APB1_CLK_RATE_M(1), + &ccm->apb1_clk_div_cfg); + + /* open the clock for uart */ + setbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_UART_SHIFT+CONFIG_CONS_INDEX-1)); +} + +int clock_twi_onoff(int port, int state) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + if (port > 2) + return -1; + + /* set the apb clock gate for twi */ + if (state) + setbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT+port)); + else + clrbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT+port)); + + return 0; +} + +#ifdef CONFIG_SPL_BUILD +#define PLL1_CFG(N, K, M, P) ( 1 << CCM_PLL1_CFG_ENABLE_SHIFT | \ + 0 << CCM_PLL1_CFG_VCO_RST_SHIFT | \ + 8 << CCM_PLL1_CFG_VCO_BIAS_SHIFT | \ + 0 << CCM_PLL1_CFG_PLL4_EXCH_SHIFT | \ + 16 << CCM_PLL1_CFG_BIAS_CUR_SHIFT | \ + (P)<< CCM_PLL1_CFG_DIVP_SHIFT | \ + 2 << CCM_PLL1_CFG_LCK_TMR_SHIFT | \ + (N)<< CCM_PLL1_CFG_FACTOR_N_SHIFT | \ + (K)<< CCM_PLL1_CFG_FACTOR_K_SHIFT | \ + 0 << CCM_PLL1_CFG_SIG_DELT_PAT_IN_SHIFT | \ + 0 << CCM_PLL1_CFG_SIG_DELT_PAT_EN_SHIFT | \ + (M)<< CCM_PLL1_CFG_FACTOR_M_SHIFT) + +static struct { + u32 pll1_cfg; + unsigned int freq; +} pll1_para[] = { + /* This array must be ordered by frequency. */ + { PLL1_CFG(16, 0, 0, 0), 384000000 }, + { PLL1_CFG(16, 1, 0, 0), 768000000 }, + { PLL1_CFG(20, 1, 0, 0), 960000000 }, + { PLL1_CFG(21, 1, 0, 0), 1008000000}, + { PLL1_CFG(22, 1, 0, 0), 1056000000}, + { PLL1_CFG(23, 1, 0, 0), 1104000000}, + { PLL1_CFG(24, 1, 0, 0), 1152000000}, + { PLL1_CFG(25, 1, 0, 0), 1200000000}, + { PLL1_CFG(26, 1, 0, 0), 1248000000}, + { PLL1_CFG(27, 1, 0, 0), 1296000000}, + { PLL1_CFG(28, 1, 0, 0), 1344000000}, + { PLL1_CFG(29, 1, 0, 0), 1392000000}, + { PLL1_CFG(30, 1, 0, 0), 1440000000}, + { PLL1_CFG(31, 1, 0, 0), 1488000000}, + /* Final catchall entry */ + { PLL1_CFG(31, 1, 0, 0), ~0}, +}; + +void clock_set_pll1(unsigned int hz) +{ + int i = 0; + int axi, ahb, apb0; + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* Find target frequency */ + while (pll1_para[i].freq < hz) + i++; + + hz = pll1_para[i].freq; + + /* Calculate system clock divisors */ + axi = DIV_ROUND_UP(hz, 432000000); /* Max 450MHz */ + ahb = DIV_ROUND_UP(hz/axi, 204000000); /* Max 250MHz */ + apb0 = 2; /* Max 150MHz */ + + printf("CPU: %uHz, AXI/AHB/APB: %d/%d/%d\n", hz, axi, ahb, apb0); + + /* Map divisors to register values */ + axi = axi - 1; + if (ahb > 4) + ahb = 3; + else if (ahb > 2) + ahb = 2; + else if (ahb > 1) + ahb = 1; + else + ahb = 0; + + apb0 = apb0 - 1; + + /* Switch to 24MHz clock while changing PLL1 */ + writel(AXI_DIV_1 << AXI_DIV_SHIFT | + AHB_DIV_2 << AHB_DIV_SHIFT | + APB0_DIV_1 << APB0_DIV_SHIFT | + CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); + sdelay(20); + + /* Configure sys clock divisors */ + writel(axi << AXI_DIV_SHIFT | + ahb << AHB_DIV_SHIFT | + apb0 << APB0_DIV_SHIFT | + CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); + + /* Configure PLL1 at the desired frequency */ + writel(pll1_para[i].pll1_cfg, &ccm->pll1_cfg); + sdelay(200); + + /* Switch CPU to PLL1 */ + writel(axi << AXI_DIV_SHIFT | + ahb << AHB_DIV_SHIFT | + apb0 << APB0_DIV_SHIFT | + CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); + sdelay(20); +} +#endif + +unsigned int clock_get_pll6(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + uint32_t rval = readl(&ccm->pll6_cfg); + int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT); + int k = ((rval & CCM_PLL6_CTRL_K_MASK) >> CCM_PLL6_CTRL_K_SHIFT) + 1; + return 24000000 * n * k / 2; +} diff --git a/arch/arm/cpu/armv7/sunxi/timer.c b/arch/arm/cpu/armv7/sunxi/timer.c new file mode 100644 index 0000000..3626389 --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/timer.c @@ -0,0 +1,113 @@ +/* + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/timer.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define TIMER_MODE (0x0 << 7) /* continuous mode */ +#define TIMER_DIV (0x0 << 4) /* pre scale 1 */ +#define TIMER_SRC (0x1 << 2) /* osc24m */ +#define TIMER_RELOAD (0x1 << 1) /* reload internal value */ +#define TIMER_EN (0x1 << 0) /* enable timer */ + +#define TIMER_CLOCK (24 * 1000 * 1000) +#define COUNT_TO_USEC(x) ((x) / 24) +#define USEC_TO_COUNT(x) ((x) * 24) +#define TICKS_PER_HZ (TIMER_CLOCK / CONFIG_SYS_HZ) +#define TICKS_TO_HZ(x) ((x) / TICKS_PER_HZ) + +#define TIMER_LOAD_VAL 0xffffffff + +#define TIMER_NUM 0 /* we use timer 0 */ + +/* read the 32-bit timer */ +static ulong read_timer(void) +{ + struct sunxi_timer_reg *timers = + (struct sunxi_timer_reg *)SUNXI_TIMER_BASE; + struct sunxi_timer *timer = &timers->timer[TIMER_NUM]; + + /* + * The hardware timer counts down, therefore we invert to + * produce an incrementing timer. + */ + return ~readl(&timer->val); +} + +/* init timer register */ +int timer_init(void) +{ + struct sunxi_timer_reg *timers = + (struct sunxi_timer_reg *)SUNXI_TIMER_BASE; + struct sunxi_timer *timer = &timers->timer[TIMER_NUM]; + writel(TIMER_LOAD_VAL, &timer->inter); + writel(TIMER_MODE | TIMER_DIV | TIMER_SRC | TIMER_RELOAD | TIMER_EN, + &timer->ctl); + + return 0; +} + +/* timer without interrupts */ +ulong get_timer(ulong base) +{ + return get_timer_masked() - base; +} + +ulong get_timer_masked(void) +{ + /* current tick value */ + ulong now = TICKS_TO_HZ(read_timer()); + + if (now >= gd->arch.lastinc) /* normal (non rollover) */ + gd->arch.tbl += (now - gd->arch.lastinc); + else { + /* rollover */ + gd->arch.tbl += (TICKS_TO_HZ(TIMER_LOAD_VAL) + - gd->arch.lastinc) + now; + } + gd->arch.lastinc = now; + + return gd->arch.tbl; +} + +/* delay x useconds */ +void __udelay(unsigned long usec) +{ + long tmo = USEC_TO_COUNT(usec); + ulong now, last = read_timer(); + + while (tmo > 0) { + now = read_timer(); + if (now > last) /* normal (non rollover) */ + tmo -= now - last; + else /* rollover */ + tmo -= TIMER_LOAD_VAL - last + now; + last = now; + } +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On ARM it just returns the timer value. + */ +unsigned long long get_ticks(void) +{ + return get_timer(0); +} + +/* + * This function is derived from PowerPC code (timebase clock frequency). + * On ARM it returns the number of timer ticks per second. + */ +ulong get_tbclk(void) +{ + return CONFIG_SYS_HZ; +} diff --git a/arch/arm/include/asm/arch-sunxi/clock.h b/arch/arm/include/asm/arch-sunxi/clock.h new file mode 100644 index 0000000..5669f39 --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/clock.h @@ -0,0 +1,29 @@ +/* + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_CLOCK_H +#define _SUNXI_CLOCK_H + +#include <linux/types.h> + +#define CLK_GATE_OPEN 0x1 +#define CLK_GATE_CLOSE 0x0 + +/* clock control module regs definition */ +#include <asm/arch/clock_sun4i.h> + +#ifndef __ASSEMBLY__ +int clock_init(void); +int clock_twi_onoff(int port, int state); +void clock_set_pll1(unsigned int hz); +unsigned int clock_get_pll6(void); +void clock_init_safe(void); +void clock_init_uart(void); +#endif + +#endif /* _SUNXI_CLOCK_H */ diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun4i.h b/arch/arm/include/asm/arch-sunxi/clock_sun4i.h new file mode 100644 index 0000000..928f3f2 --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/clock_sun4i.h @@ -0,0 +1,256 @@ +/* + * sun4i, sun5i and sun7i clock register definitions + * + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_CLOCK_SUN4I_H +#define _SUNXI_CLOCK_SUN4I_H + +struct sunxi_ccm_reg { + u32 pll1_cfg; /* 0x00 pll1 control */ + u32 pll1_tun; /* 0x04 pll1 tuning */ + u32 pll2_cfg; /* 0x08 pll2 control */ + u32 pll2_tun; /* 0x0c pll2 tuning */ + u32 pll3_cfg; /* 0x10 pll3 control */ + u8 res0[0x4]; + u32 pll4_cfg; /* 0x18 pll4 control */ + u8 res1[0x4]; + u32 pll5_cfg; /* 0x20 pll5 control */ + u32 pll5_tun; /* 0x24 pll5 tuning */ + u32 pll6_cfg; /* 0x28 pll6 control */ + u32 pll6_tun; /* 0x2c pll6 tuning */ + u32 pll7_cfg; /* 0x30 pll7 control */ + u32 pll1_tun2; /* 0x34 pll5 tuning2 */ + u8 res2[0x4]; + u32 pll5_tun2; /* 0x3c pll5 tuning2 */ + u8 res3[0xc]; + u32 pll_lock_dbg; /* 0x4c pll lock time debug */ + u32 osc24m_cfg; /* 0x50 osc24m control */ + u32 cpu_ahb_apb0_cfg; /* 0x54 cpu,ahb and apb0 divide ratio */ + u32 apb1_clk_div_cfg; /* 0x58 apb1 clock dividor */ + u32 axi_gate; /* 0x5c axi module clock gating */ + u32 ahb_gate0; /* 0x60 ahb module clock gating 0 */ + u32 ahb_gate1; /* 0x64 ahb module clock gating 1 */ + u32 apb0_gate; /* 0x68 apb0 module clock gating */ + u32 apb1_gate; /* 0x6c apb1 module clock gating */ + u8 res4[0x10]; + u32 nand_sclk_cfg; /* 0x80 nand sub clock control */ + u32 ms_sclk_cfg; /* 0x84 memory stick sub clock control */ + u32 sd0_clk_cfg; /* 0x88 sd0 clock control */ + u32 sd1_clk_cfg; /* 0x8c sd1 clock control */ + u32 sd2_clk_cfg; /* 0x90 sd2 clock control */ + u32 sd3_clk_cfg; /* 0x94 sd3 clock control */ + u32 ts_clk_cfg; /* 0x98 transport stream clock control */ + u32 ss_clk_cfg; /* 0x9c */ + u32 spi0_clk_cfg; /* 0xa0 */ + u32 spi1_clk_cfg; /* 0xa4 */ + u32 spi2_clk_cfg; /* 0xa8 */ + u32 pata_clk_cfg; /* 0xac */ + u32 ir0_clk_cfg; /* 0xb0 */ + u32 ir1_clk_cfg; /* 0xb4 */ + u32 iis_clk_cfg; /* 0xb8 */ + u32 ac97_clk_cfg; /* 0xbc */ + u32 spdif_clk_cfg; /* 0xc0 */ + u32 keypad_clk_cfg; /* 0xc4 */ + u32 sata_clk_cfg; /* 0xc8 */ + u32 usb_clk_cfg; /* 0xcc */ + u32 gps_clk_cfg; /* 0xd0 */ + u32 spi3_clk_cfg; /* 0xd4 */ + u8 res5[0x28]; + u32 dram_clk_cfg; /* 0x100 */ + u32 be0_clk_cfg; /* 0x104 */ + u32 be1_clk_cfg; /* 0x108 */ + u32 fe0_clk_cfg; /* 0x10c */ + u32 fe1_clk_cfg; /* 0x110 */ + u32 mp_clk_cfg; /* 0x114 */ + u32 lcd0_ch0_clk_cfg; /* 0x118 */ + u32 lcd1_ch0_clk_cfg; /* 0x11c */ + u32 csi_isp_clk_cfg; /* 0x120 */ + u8 res6[0x4]; + u32 tvd_clk_reg; /* 0x128 */ + u32 lcd0_ch1_clk_cfg; /* 0x12c */ + u32 lcd1_ch1_clk_cfg; /* 0x130 */ + u32 csi0_clk_cfg; /* 0x134 */ + u32 csi1_clk_cfg; /* 0x138 */ + u32 ve_clk_cfg; /* 0x13c */ + u32 audio_codec_clk_cfg; /* 0x140 */ + u32 avs_clk_cfg; /* 0x144 */ + u32 ace_clk_cfg; /* 0x148 */ + u32 lvds_clk_cfg; /* 0x14c */ + u32 hdmi_clk_cfg; /* 0x150 */ + u32 mali_clk_cfg; /* 0x154 */ + u8 res7[0x4]; + u32 mbus_clk_cfg; /* 0x15c */ + u8 res8[0x4]; + u32 gmac_clk_cfg; /* 0x164 */ +}; + +/* apb1 bit field */ +#define APB1_CLK_SRC_OSC24M (0x0 << 24) +#define APB1_CLK_SRC_PLL6 (0x1 << 24) +#define APB1_CLK_SRC_LOSC (0x2 << 24) +#define APB1_CLK_SRC_MASK (0x3 << 24) +#define APB1_CLK_RATE_N_1 (0x0 << 16) +#define APB1_CLK_RATE_N_2 (0x1 << 16) +#define APB1_CLK_RATE_N_4 (0x2 << 16) +#define APB1_CLK_RATE_N_8 (0x3 << 16) +#define APB1_CLK_RATE_N_MASK (3 << 16) +#define APB1_CLK_RATE_M(m) (((m)-1) << 0) +#define APB1_CLK_RATE_M_MASK (0x1f << 0) + +/* apb1 gate field */ +#define APB1_GATE_UART_SHIFT (16) +#define APB1_GATE_UART_MASK (0xff << APB1_GATE_UART_SHIFT) +#define APB1_GATE_TWI_SHIFT (0) +#define APB1_GATE_TWI_MASK (0xf << APB1_GATE_TWI_SHIFT) + +/* clock divide */ +#define AXI_DIV_SHIFT (0) +#define AXI_DIV_1 0 +#define AXI_DIV_2 1 +#define AXI_DIV_3 2 +#define AXI_DIV_4 3 +#define AHB_DIV_SHIFT (4) +#define AHB_DIV_1 0 +#define AHB_DIV_2 1 +#define AHB_DIV_4 2 +#define AHB_DIV_8 3 +#define APB0_DIV_SHIFT (8) +#define APB0_DIV_1 0 +#define APB0_DIV_2 1 +#define APB0_DIV_4 2 +#define APB0_DIV_8 3 +#define CPU_CLK_SRC_SHIFT (16) +#define CPU_CLK_SRC_OSC24M 1 +#define CPU_CLK_SRC_PLL1 2 + +#define CCM_PLL1_CFG_ENABLE_SHIFT 31 +#define CCM_PLL1_CFG_VCO_RST_SHIFT 30 +#define CCM_PLL1_CFG_VCO_BIAS_SHIFT 26 +#define CCM_PLL1_CFG_PLL4_EXCH_SHIFT 25 +#define CCM_PLL1_CFG_BIAS_CUR_SHIFT 20 +#define CCM_PLL1_CFG_DIVP_SHIFT 16 +#define CCM_PLL1_CFG_LCK_TMR_SHIFT 13 +#define CCM_PLL1_CFG_FACTOR_N_SHIFT 8 +#define CCM_PLL1_CFG_FACTOR_K_SHIFT 4 +#define CCM_PLL1_CFG_SIG_DELT_PAT_IN_SHIFT 3 +#define CCM_PLL1_CFG_SIG_DELT_PAT_EN_SHIFT 2 +#define CCM_PLL1_CFG_FACTOR_M_SHIFT 0 + +#define PLL1_CFG_DEFAULT 0xa1005000 + +#define PLL6_CFG_DEFAULT 0xa1009911 + +/* nand clock */ +#define NAND_CLK_SRC_OSC24 0 +#define NAND_CLK_DIV_N 0 +#define NAND_CLK_DIV_M 0 + +/* gps clock */ +#define GPS_SCLK_GATING_OFF 0 +#define GPS_RESET 0 + +/* ahb clock gate bit offset */ +#define AHB_GATE_OFFSET_GPS 26 +#define AHB_GATE_OFFSET_SATA 25 +#define AHB_GATE_OFFSET_PATA 24 +#define AHB_GATE_OFFSET_SPI3 23 +#define AHB_GATE_OFFSET_SPI2 22 +#define AHB_GATE_OFFSET_SPI1 21 +#define AHB_GATE_OFFSET_SPI0 20 +#define AHB_GATE_OFFSET_TS0 18 +#define AHB_GATE_OFFSET_EMAC 17 +#define AHB_GATE_OFFSET_ACE 16 +#define AHB_GATE_OFFSET_DLL 15 +#define AHB_GATE_OFFSET_SDRAM 14 +#define AHB_GATE_OFFSET_NAND 13 +#define AHB_GATE_OFFSET_MS 12 +#define AHB_GATE_OFFSET_MMC3 11 +#define AHB_GATE_OFFSET_MMC2 10 +#define AHB_GATE_OFFSET_MMC1 9 +#define AHB_GATE_OFFSET_MMC0 8 +#define AHB_GATE_OFFSET_MMC(n) (AHB_GATE_OFFSET_MMC0 + (n)) +#define AHB_GATE_OFFSET_BIST 7 +#define AHB_GATE_OFFSET_DMA 6 +#define AHB_GATE_OFFSET_SS 5 +#define AHB_GATE_OFFSET_USB_OHCI1 4 +#define AHB_GATE_OFFSET_USB_EHCI1 3 +#define AHB_GATE_OFFSET_USB_OHCI0 2 +#define AHB_GATE_OFFSET_USB_EHCI0 1 +#define AHB_GATE_OFFSET_USB 0 + +/* ahb clock gate bit offset (second register) */ +#define AHB_GATE_OFFSET_GMAC 17 + +#define CCM_AHB_GATE_GPS (0x1 << 26) +#define CCM_AHB_GATE_SDRAM (0x1 << 14) +#define CCM_AHB_GATE_DLL (0x1 << 15) +#define CCM_AHB_GATE_ACE (0x1 << 16) + +#define CCM_PLL5_CTRL_M(n) (((n) & 0x3) << 0) +#define CCM_PLL5_CTRL_M_MASK CCM_PLL5_CTRL_M(0x3) +#define CCM_PLL5_CTRL_M_X(n) ((n) - 1) +#define CCM_PLL5_CTRL_M1(n) (((n) & 0x3) << 2) +#define CCM_PLL5_CTRL_M1_MASK CCM_PLL5_CTRL_M1(0x3) +#define CCM_PLL5_CTRL_M1_X(n) ((n) - 1) +#define CCM_PLL5_CTRL_K(n) (((n) & 0x3) << 4) +#define CCM_PLL5_CTRL_K_MASK CCM_PLL5_CTRL_K(0x3) +#define CCM_PLL5_CTRL_K_X(n) ((n) - 1) +#define CCM_PLL5_CTRL_LDO (0x1 << 7) +#define CCM_PLL5_CTRL_N(n) (((n) & 0x1f) << 8) +#define CCM_PLL5_CTRL_N_MASK CCM_PLL5_CTRL_N(0x1f) +#define CCM_PLL5_CTRL_N_X(n) (n) +#define CCM_PLL5_CTRL_P(n) (((n) & 0x3) << 16) +#define CCM_PLL5_CTRL_P_MASK CCM_PLL5_CTRL_P(0x3) +#define CCM_PLL5_CTRL_P_X(n) ((n) - 1) +#define CCM_PLL5_CTRL_BW (0x1 << 18) +#define CCM_PLL5_CTRL_VCO_GAIN (0x1 << 19) +#define CCM_PLL5_CTRL_BIAS(n) (((n) & 0x1f) << 20) +#define CCM_PLL5_CTRL_BIAS_MASK CCM_PLL5_CTRL_BIAS(0x1f) +#define CCM_PLL5_CTRL_BIAS_X(n) ((n) - 1) +#define CCM_PLL5_CTRL_VCO_BIAS (0x1 << 25) +#define CCM_PLL5_CTRL_DDR_CLK (0x1 << 29) +#define CCM_PLL5_CTRL_BYPASS (0x1 << 30) +#define CCM_PLL5_CTRL_EN (0x1 << 31) + +#define CCM_PLL6_CTRL_N_SHIFT 8 +#define CCM_PLL6_CTRL_N_MASK (0x1f << CCM_PLL6_CTRL_N_SHIFT) +#define CCM_PLL6_CTRL_K_SHIFT 4 +#define CCM_PLL6_CTRL_K_MASK (0x3 << CCM_PLL6_CTRL_K_SHIFT) + +#define CCM_GPS_CTRL_RESET (0x1 << 0) +#define CCM_GPS_CTRL_GATE (0x1 << 1) + +#define CCM_DRAM_CTRL_DCLK_OUT (0x1 << 15) + +#define CCM_MBUS_CTRL_M(n) (((n) & 0xf) << 0) +#define CCM_MBUS_CTRL_M_MASK CCM_MBUS_CTRL_M(0xf) +#define CCM_MBUS_CTRL_M_X(n) ((n) - 1) +#define CCM_MBUS_CTRL_N(n) (((n) & 0xf) << 16) +#define CCM_MBUS_CTRL_N_MASK CCM_MBUS_CTRL_N(0xf) +#define CCM_MBUS_CTRL_N_X(n) (((n) >> 3) ? 3 : (((n) >> 2) ? 2 : (((n) >> 1) ? 1 : 0))) +#define CCM_MBUS_CTRL_CLK_SRC(n) (((n) & 0x3) << 24) +#define CCM_MBUS_CTRL_CLK_SRC_MASK CCM_MBUS_CTRL_CLK_SRC(0x3) +#define CCM_MBUS_CTRL_CLK_SRC_HOSC 0x0 +#define CCM_MBUS_CTRL_CLK_SRC_PLL6 0x1 +#define CCM_MBUS_CTRL_CLK_SRC_PLL5 0x2 +#define CCM_MBUS_CTRL_GATE (0x1 << 31) + +#define CCM_MMC_CTRL_OSCM24 (0x0 << 24) +#define CCM_MMC_CTRL_PLL6 (0x1 << 24) +#define CCM_MMC_CTRL_PLL5 (0x2 << 24) + +#define CCM_MMC_CTRL_ENABLE (0x1 << 31) + +#define CCM_GMAC_CTRL_TX_CLK_SRC_MII 0x0 +#define CCM_GMAC_CTRL_TX_CLK_SRC_EXT_RGMII 0x1 +#define CCM_GMAC_CTRL_TX_CLK_SRC_INT_RGMII 0x2 +#define CCM_GMAC_CTRL_GPIT_MII (0x0 << 2) +#define CCM_GMAC_CTRL_GPIT_RGMII (0x1 << 2) + +#endif /* _SUNXI_CLOCK_SUN4I_H */ diff --git a/arch/arm/include/asm/arch-sunxi/sys_proto.h b/arch/arm/include/asm/arch-sunxi/sys_proto.h new file mode 100644 index 0000000..c3e636e --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/sys_proto.h @@ -0,0 +1,16 @@ +/* + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SYS_PROTO_H_ +#define _SYS_PROTO_H_ + +#include <linux/types.h> + +void sdelay(unsigned long); + +#endif diff --git a/arch/arm/include/asm/arch-sunxi/timer.h b/arch/arm/include/asm/arch-sunxi/timer.h new file mode 100644 index 0000000..6aacfd7 --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/timer.h @@ -0,0 +1,88 @@ +/* + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * Configuration settings for the Allwinner A10-evb board. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_TIMER_H_ +#define _SUNXI_TIMER_H_ + +#ifndef __ASSEMBLY__ + +#include <linux/types.h> + +/* General purpose timer */ +struct sunxi_timer { + u32 ctl; + u32 inter; + u32 val; + u8 res[4]; +}; + +/* Audio video sync*/ +struct sunxi_avs { + u32 ctl; /* 0x80 */ + u32 cnt0; /* 0x84 */ + u32 cnt1; /* 0x88 */ + u32 div; /* 0x8c */ +}; + +/* 64 bit counter */ +struct sunxi_64cnt { + u32 ctl; /* 0xa0 */ + u32 lo; /* 0xa4 */ + u32 hi; /* 0xa8 */ +}; + +/* Watchdog */ +struct sunxi_wdog { + u32 ctl; /* 0x90 */ + u32 mode; /* 0x94 */ +}; + +/* Rtc */ +struct sunxi_rtc { + u32 ctl; /* 0x100 */ + u32 yymmdd; /* 0x104 */ + u32 hhmmss; /* 0x108 */ +}; + +/* Alarm */ +struct sunxi_alarm { + u32 ddhhmmss; /* 0x10c */ + u32 hhmmss; /* 0x110 */ + u32 en; /* 0x114 */ + u32 irqen; /* 0x118 */ + u32 irqsta; /* 0x11c */ +}; + +/* Timer general purpose register */ +struct sunxi_tgp { + u32 tgpd; +}; + +struct sunxi_timer_reg { + u32 tirqen; /* 0x00 */ + u32 tirqsta; /* 0x04 */ + u8 res1[8]; + struct sunxi_timer timer[6]; /* We have 6 timers */ + u8 res2[16]; + struct sunxi_avs avs; + struct sunxi_wdog wdog; + u8 res3[8]; + struct sunxi_64cnt cnt64; + u8 res4[0x58]; + struct sunxi_rtc rtc; + struct sunxi_alarm alarm; + struct sunxi_tgp tgp[4]; + u8 res5[8]; + u32 cpu_cfg; +}; + +#endif /* __ASSEMBLY__ */ + +#endif

This patch adds the basic pinmux and gpio support for the Allwinner A20 (sun7i) processor. This code will not been compiled until the build is hooked up in a later patch. It has been split out to keep the patches manageable.

Signed-off-by: Chen-Yu Tsai wens@csie.org Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Ma Haijun mahaijuns@gmail.com Signed-off-by: Oliver Schinagl oliver@schinagl.nl Signed-off-by: Henrik Nordström henrik@henriknordstrom.net Signed-off-by: Ian Campbell ijc@hellion.org.uk Reviewed-by: Tom Rini trini@ti.com Acked-by: Marek Vasut marex@denx.de Cc: Stefan Roese sr@denx.de Cc: Tom Cubie Mr.hipboi@gmail.com --- v5: Based on 3f5ff92b1503 "sunxi: add comments to pll1_para array." - No changes required

v4: Based on d9fe0a1e061e "sunxi: mksunxiboot: remove unnecessary casts." - No changes required

v3: Based on c89867dca2e9 "sunxi: clocks: clock_get_pll5 prototype and coding style".

v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc: checkpatch whitespace fixes" with v2014.04-rc2 merged in: - Additional pin definitions

v1: Based on u-boot-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in ldscripts" vs v2014.01. --- arch/arm/cpu/armv7/sunxi/Makefile | 1 + arch/arm/cpu/armv7/sunxi/pinmux.c | 61 ++++++++++++++ arch/arm/include/asm/arch-sunxi/gpio.h | 147 +++++++++++++++++++++++++++++++++ 3 files changed, 209 insertions(+) create mode 100644 arch/arm/cpu/armv7/sunxi/pinmux.c create mode 100644 arch/arm/include/asm/arch-sunxi/gpio.h

diff --git a/arch/arm/cpu/armv7/sunxi/Makefile b/arch/arm/cpu/armv7/sunxi/Makefile index 440d266..529e7ec 100644 --- a/arch/arm/cpu/armv7/sunxi/Makefile +++ b/arch/arm/cpu/armv7/sunxi/Makefile @@ -9,4 +9,5 @@ # obj-y += timer.o obj-y += clock.o +obj-y += pinmux.o obj-$(CONFIG_SUN7I) += clock_sun4i.o diff --git a/arch/arm/cpu/armv7/sunxi/pinmux.c b/arch/arm/cpu/armv7/sunxi/pinmux.c new file mode 100644 index 0000000..1f2843f --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/pinmux.c @@ -0,0 +1,61 @@ +/* + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/gpio.h> + +int sunxi_gpio_set_cfgpin(u32 pin, u32 val) +{ + u32 bank = GPIO_BANK(pin); + u32 index = GPIO_CFG_INDEX(pin); + u32 offset = GPIO_CFG_OFFSET(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + clrsetbits_le32(&pio->cfg[0] + index, 0xf << offset, val << offset); + + return 0; +} + +int sunxi_gpio_get_cfgpin(u32 pin) +{ + u32 cfg; + u32 bank = GPIO_BANK(pin); + u32 index = GPIO_CFG_INDEX(pin); + u32 offset = GPIO_CFG_OFFSET(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + cfg = readl(&pio->cfg[0] + index); + cfg >>= offset; + + return cfg & 0xf; +} + +int sunxi_gpio_set_drv(u32 pin, u32 val) +{ + u32 bank = GPIO_BANK(pin); + u32 index = GPIO_DRV_INDEX(pin); + u32 offset = GPIO_DRV_OFFSET(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + clrsetbits_le32(&pio->drv[0] + index, 0x3 << offset, val << offset); + + return 0; +} + +int sunxi_gpio_set_pull(u32 pin, u32 val) +{ + u32 bank = GPIO_BANK(pin); + u32 index = GPIO_PULL_INDEX(pin); + u32 offset = GPIO_PULL_OFFSET(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + clrsetbits_le32(&pio->pull[0] + index, 0x3 << offset, val << offset); + + return 0; +} diff --git a/arch/arm/include/asm/arch-sunxi/gpio.h b/arch/arm/include/asm/arch-sunxi/gpio.h new file mode 100644 index 0000000..892479c --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/gpio.h @@ -0,0 +1,147 @@ +/* + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_GPIO_H +#define _SUNXI_GPIO_H + +#include <linux/types.h> + +/* + * sunxi has 9 banks of gpio, they are: + * PA0 - PA17 | PB0 - PB23 | PC0 - PC24 + * PD0 - PD27 | PE0 - PE31 | PF0 - PF5 + * PG0 - PG9 | PH0 - PH27 | PI0 - PI12 + */ + +#define SUNXI_GPIO_A 0 +#define SUNXI_GPIO_B 1 +#define SUNXI_GPIO_C 2 +#define SUNXI_GPIO_D 3 +#define SUNXI_GPIO_E 4 +#define SUNXI_GPIO_F 5 +#define SUNXI_GPIO_G 6 +#define SUNXI_GPIO_H 7 +#define SUNXI_GPIO_I 8 +#define SUNXI_GPIO_BANKS 9 + +struct sunxi_gpio { + u32 cfg[4]; + u32 dat; + u32 drv[2]; + u32 pull[2]; +}; + +/* gpio interrupt control */ +struct sunxi_gpio_int { + u32 cfg[3]; + u32 ctl; + u32 sta; + u32 deb; /* interrupt debounce */ +}; + +struct sunxi_gpio_reg { + struct sunxi_gpio gpio_bank[SUNXI_GPIO_BANKS]; + u8 res[0xbc]; + struct sunxi_gpio_int gpio_int; +}; + +#define BANK_TO_GPIO(bank) \ + &((struct sunxi_gpio_reg *)SUNXI_PIO_BASE)->gpio_bank[bank] + +#define GPIO_BANK(pin) ((pin) >> 5) +#define GPIO_NUM(pin) ((pin) & 0x1f) + +#define GPIO_CFG_INDEX(pin) (((pin) & 0x1f) >> 3) +#define GPIO_CFG_OFFSET(pin) ((((pin) & 0x1f) & 0x7) << 2) + +#define GPIO_DRV_INDEX(pin) (((pin) & 0x1f) >> 4) +#define GPIO_DRV_OFFSET(pin) ((((pin) & 0x1f) & 0xf) << 1) + +#define GPIO_PULL_INDEX(pin) (((pin) & 0x1f) >> 4) +#define GPIO_PULL_OFFSET(pin) ((((pin) & 0x1f) & 0xf) << 1) + +/* GPIO bank sizes */ +#define SUNXI_GPIO_A_NR 32 +#define SUNXI_GPIO_B_NR 32 +#define SUNXI_GPIO_C_NR 32 +#define SUNXI_GPIO_D_NR 32 +#define SUNXI_GPIO_E_NR 32 +#define SUNXI_GPIO_F_NR 32 +#define SUNXI_GPIO_G_NR 32 +#define SUNXI_GPIO_H_NR 32 +#define SUNXI_GPIO_I_NR 32 + +#define SUNXI_GPIO_NEXT(__gpio) \ + ((__gpio##_START) + (__gpio##_NR) + 0) + +enum sunxi_gpio_number { + SUNXI_GPIO_A_START = 0, + SUNXI_GPIO_B_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_A), + SUNXI_GPIO_C_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_B), + SUNXI_GPIO_D_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_C), + SUNXI_GPIO_E_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_D), + SUNXI_GPIO_F_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_E), + SUNXI_GPIO_G_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_F), + SUNXI_GPIO_H_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_G), + SUNXI_GPIO_I_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_H), +}; + +/* SUNXI GPIO number definitions */ +#define SUNXI_GPA(_nr) (SUNXI_GPIO_A_START + (_nr)) +#define SUNXI_GPB(_nr) (SUNXI_GPIO_B_START + (_nr)) +#define SUNXI_GPC(_nr) (SUNXI_GPIO_C_START + (_nr)) +#define SUNXI_GPD(_nr) (SUNXI_GPIO_D_START + (_nr)) +#define SUNXI_GPE(_nr) (SUNXI_GPIO_E_START + (_nr)) +#define SUNXI_GPF(_nr) (SUNXI_GPIO_F_START + (_nr)) +#define SUNXI_GPG(_nr) (SUNXI_GPIO_G_START + (_nr)) +#define SUNXI_GPH(_nr) (SUNXI_GPIO_H_START + (_nr)) +#define SUNXI_GPI(_nr) (SUNXI_GPIO_I_START + (_nr)) + +/* GPIO pin function config */ +#define SUNXI_GPIO_INPUT 0 +#define SUNXI_GPIO_OUTPUT 1 + +#define SUNXI_GPA0_EMAC 2 +#define SUN7I_GPA0_GMAC 5 + +#define SUNXI_GPB0_TWI0 2 + +#define SUN4I_GPB22_UART0_TX 2 +#define SUN4I_GPB23_UART0_RX 2 + +#define SUN5I_GPB19_UART0_TX 2 +#define SUN5I_GPB20_UART0_RX 2 + +#define SUN5I_GPG3_UART1_TX 4 +#define SUN5I_GPG4_UART1_RX 4 + +#define SUNXI_GPC6_SDC2 3 + +#define SUNXI_GPF0_SDC0 2 + +#define SUNXI_GPF2_SDC0 2 +#define SUNXI_GPF2_UART0_TX 4 +#define SUNXI_GPF4_UART0_RX 4 + +#define SUN4I_GPG0_SDC1 4 + +#define SUN4I_GPH22_SDC1 5 + +#define SUN4I_GPI4_SDC3 2 + +/* GPIO pin pull-up/down config */ +#define SUNXI_GPIO_PULL_DISABLE 0 +#define SUNXI_GPIO_PULL_UP 1 +#define SUNXI_GPIO_PULL_DOWN 2 + +int sunxi_gpio_set_cfgpin(u32 pin, u32 val); +int sunxi_gpio_get_cfgpin(u32 pin); +int sunxi_gpio_set_drv(u32 pin, u32 val); +int sunxi_gpio_set_pull(u32 pin, u32 val); + +#endif /* _SUNXI_GPIO_H */

This patch adds DRAM initialisation support for the Allwinner A20 (sun7i) processor. This code will not been compiled until the build is hooked up in a later patch. It has been split out to keep the patches manageable.

Signed-off-by: Alexandru Gagniuc mr.nuke.me@gmail.com Signed-off-by: Emilio López emilio@elopez.com.ar Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Henrik Nordstrom henrik@henriknordstrom.net Signed-off-by: Jens Kuske jenskuske@gmail.com Signed-off-by: Luke Leighton lkcl@lkcl.net Signed-off-by: Oliver Schinagl oliver@schinagl.nl Signed-off-by: Siarhei Siamashka siarhei.siamashka@gmail.com Signed-off-by: Stefan Roese sr@denx.de Signed-off-by: Ian Campbell ijc@hellion.org.uk Reviewed-by: Marek Vasut marex@denx.de Cc: Tom Cubie Mr.hipboi@gmail.com --- v5: Based on 3f5ff92b1503 "sunxi: add comments to pll1_para array." - No changes required

v4: Based on d9fe0a1e061e "sunxi: mksunxiboot: remove unnecessary casts." - removed unbounded loops - support more dram clock speeds.

v3: Based on c89867dca2e9 "sunxi: clocks: clock_get_pll5 prototype and coding style".

v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc: checkpatch whitespace fixes" with v2014.04-rc2 merged in: - remove redundant braces in mctl_ddr3_reset - remove incorrect call to mctl_ddr3_reset. - add CONFIG_SUN7I to simplify future SUN?I support. - add a comment about the magic numbers from the a/w code dumps - fix a bunch of checkpatch.pl issues

v1: Based on u-boot-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in ldscripts" vs v2014.01. --- arch/arm/cpu/armv7/sunxi/Makefile | 1 + arch/arm/cpu/armv7/sunxi/dram.c | 593 +++++++++++++++++++++++++++++++++ arch/arm/include/asm/arch-sunxi/dram.h | 179 ++++++++++ 3 files changed, 773 insertions(+) create mode 100644 arch/arm/cpu/armv7/sunxi/dram.c create mode 100644 arch/arm/include/asm/arch-sunxi/dram.h

diff --git a/arch/arm/cpu/armv7/sunxi/Makefile b/arch/arm/cpu/armv7/sunxi/Makefile index 529e7ec..d81d26c 100644 --- a/arch/arm/cpu/armv7/sunxi/Makefile +++ b/arch/arm/cpu/armv7/sunxi/Makefile @@ -11,3 +11,4 @@ obj-y += timer.o obj-y += clock.o obj-y += pinmux.o obj-$(CONFIG_SUN7I) += clock_sun4i.o +obj-$(CONFIG_SUN7I) += dram.o diff --git a/arch/arm/cpu/armv7/sunxi/dram.c b/arch/arm/cpu/armv7/sunxi/dram.c new file mode 100644 index 0000000..b43c4b4 --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/dram.c @@ -0,0 +1,593 @@ +/* + * sunxi DRAM controller initialization + * (C) Copyright 2012 Henrik Nordstrom henrik@henriknordstrom.net + * (C) Copyright 2013 Luke Kenneth Casson Leighton lkcl@lkcl.net + * + * Based on sun4i Linux kernel sources mach-sunxi/pm/standby/dram*.c + * and earlier U-Boot Allwiner A10 SPL work + * + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Berg Xing bergxing@allwinnertech.com + * Tom Cubie tangliang@allwinnertech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * Unfortunately the only documentation we have on the sun7i DRAM + * controller is Allwinner boot0 + boot1 code, and that code uses + * magic numbers & shifts with no explanations. Hence this code is + * rather undocumented and full of magic. + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/dram.h> +#include <asm/arch/timer.h> +#include <asm/arch/sys_proto.h> + +#define CPU_CFG_CHIP_VER(n) ((n) << 6) +#define CPU_CFG_CHIP_VER_MASK CPU_CFG_CHIP_VER(0x3) +#define CPU_CFG_CHIP_REV_A 0x0 +#define CPU_CFG_CHIP_REV_C1 0x1 +#define CPU_CFG_CHIP_REV_C2 0x2 +#define CPU_CFG_CHIP_REV_B 0x3 + +/* + * Wait up to 1s for mask to be clear in given reg. + */ +static void await_completion(u32 *reg, u32 mask) +{ + unsigned long tmo = timer_get_us() + 1000000; + + while (readl(reg) & mask) { + if (timer_get_us() > tmo) + panic("Timeout initialising DRAM\n"); + } +} + +static void mctl_ddr3_reset(void) +{ + struct sunxi_dram_reg *dram = + (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + clrbits_le32(&dram->mcr, DRAM_MCR_RESET); + udelay(2); + setbits_le32(&dram->mcr, DRAM_MCR_RESET); +} + +static void mctl_set_drive(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + clrsetbits_le32(&dram->mcr, DRAM_MCR_MODE_NORM(0x3) | (0x3 << 28), + DRAM_MCR_MODE_EN(0x3) | + 0xffc); +} + +static void mctl_itm_disable(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + clrsetbits_le32(&dram->ccr, DRAM_CCR_INIT, DRAM_CCR_ITM_OFF); +} + +static void mctl_itm_enable(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + clrbits_le32(&dram->ccr, DRAM_CCR_ITM_OFF); +} + +static void mctl_enable_dll0(u32 phase) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + clrsetbits_le32(&dram->dllcr[0], 0x3f << 6, + ((phase >> 16) & 0x3f) << 6); + clrsetbits_le32(&dram->dllcr[0], DRAM_DLLCR_NRESET, DRAM_DLLCR_DISABLE); + udelay(2); + + clrbits_le32(&dram->dllcr[0], DRAM_DLLCR_NRESET | DRAM_DLLCR_DISABLE); + udelay(22); + + clrsetbits_le32(&dram->dllcr[0], DRAM_DLLCR_DISABLE, DRAM_DLLCR_NRESET); + udelay(22); +} + +/* + * Note: This differs from pm/standby in that it checks the bus width + */ +static void mctl_enable_dllx(u32 phase) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 i, n, bus_width; + + bus_width = readl(&dram->dcr); + + if ((bus_width & DRAM_DCR_BUS_WIDTH_MASK) == + DRAM_DCR_BUS_WIDTH(DRAM_DCR_BUS_WIDTH_32BIT)) + n = DRAM_DCR_NR_DLLCR_32BIT; + else + n = DRAM_DCR_NR_DLLCR_16BIT; + + for (i = 1; i < n; i++) { + clrsetbits_le32(&dram->dllcr[i], 0xf << 14, + (phase & 0xf) << 14); + clrsetbits_le32(&dram->dllcr[i], DRAM_DLLCR_NRESET, + DRAM_DLLCR_DISABLE); + phase >>= 4; + } + udelay(2); + + for (i = 1; i < n; i++) + clrbits_le32(&dram->dllcr[i], DRAM_DLLCR_NRESET | + DRAM_DLLCR_DISABLE); + udelay(22); + + for (i = 1; i < n; i++) + clrsetbits_le32(&dram->dllcr[i], DRAM_DLLCR_DISABLE, + DRAM_DLLCR_NRESET); + udelay(22); +} + +static u32 hpcr_value[32] = { +#ifdef CONFIG_SUN7I + 0x0301, 0x0301, 0x0301, 0x0301, + 0x0301, 0x0301, 0x0301, 0x0301, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0x1031, 0x1031, 0x0735, 0x1035, + 0x1035, 0x0731, 0x1031, 0x0735, + 0x1035, 0x1031, 0x0731, 0x1035, + 0x0001, 0x1031, 0, 0x1031 + /* last row differs from boot0 source table + * 0x1031, 0x0301, 0x0301, 0x0731 + * but boot0 code skips #28 and #30, and sets #29 and #31 to the + * value from #28 entry (0x1031) + */ +#endif +}; + +static void mctl_configure_hostport(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 i; + + for (i = 0; i < 32; i++) + writel(hpcr_value[i], &dram->hpcr[i]); +} + +static void mctl_setup_dram_clock(u32 clk) +{ + u32 reg_val; + struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* setup DRAM PLL */ + reg_val = readl(&ccm->pll5_cfg); + reg_val &= ~CCM_PLL5_CTRL_M_MASK; /* set M to 0 (x1) */ + reg_val &= ~CCM_PLL5_CTRL_K_MASK; /* set K to 0 (x1) */ + reg_val &= ~CCM_PLL5_CTRL_N_MASK; /* set N to 0 (x0) */ + reg_val &= ~CCM_PLL5_CTRL_P_MASK; /* set P to 0 (x1) */ + if (clk >= 540 && clk < 552) { + /* dram = 540MHz, pll5p = 540MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(3)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(15)); + reg_val |= CCM_PLL5_CTRL_P(1); + } else if (clk >= 512 && clk < 528) { + /* dram = 512MHz, pll5p = 384MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(3)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(4)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(16)); + reg_val |= CCM_PLL5_CTRL_P(2); + } else if (clk >= 496 && clk < 504) { + /* dram = 496MHz, pll5p = 372MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(3)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(2)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(31)); + reg_val |= CCM_PLL5_CTRL_P(2); + } else if (clk >= 468 && clk < 480) { + /* dram = 468MHz, pll5p = 468MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(3)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(13)); + reg_val |= CCM_PLL5_CTRL_P(1); + } else if (clk >= 396 && clk < 408) { + /* dram = 396MHz, pll5p = 396MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(3)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(11)); + reg_val |= CCM_PLL5_CTRL_P(1); + } else { + /* any other frequency that is a multiple of 24 */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(2)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(clk / 24)); + reg_val |= CCM_PLL5_CTRL_P(CCM_PLL5_CTRL_P_X(2)); + } + reg_val &= ~CCM_PLL5_CTRL_VCO_GAIN; /* PLL VCO Gain off */ + reg_val |= CCM_PLL5_CTRL_EN; /* PLL On */ + writel(reg_val, &ccm->pll5_cfg); + udelay(5500); + + setbits_le32(&ccm->pll5_cfg, CCM_PLL5_CTRL_DDR_CLK); + +#if defined(CONFIG_SUN4I) || defined(CONFIG_SUN7I) + /* reset GPS */ + clrbits_le32(&ccm->gps_clk_cfg, CCM_GPS_CTRL_RESET | CCM_GPS_CTRL_GATE); + setbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_GPS); + udelay(1); + clrbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_GPS); +#endif + + /* setup MBUS clock */ + reg_val = CCM_MBUS_CTRL_GATE | + CCM_MBUS_CTRL_CLK_SRC(CCM_MBUS_CTRL_CLK_SRC_PLL6) | + CCM_MBUS_CTRL_N(CCM_MBUS_CTRL_N_X(2)) | + CCM_MBUS_CTRL_M(CCM_MBUS_CTRL_M_X(2)); + writel(reg_val, &ccm->mbus_clk_cfg); + + /* + * open DRAMC AHB & DLL register clock + * close it first + */ + clrbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM | CCM_AHB_GATE_DLL); + udelay(22); + + /* then open it */ + setbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM | CCM_AHB_GATE_DLL); + udelay(22); +} + +static int dramc_scan_readpipe(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 reg_val; + + /* data training trigger */ +#ifdef CONFIG_SUN7I + clrbits_le32(&dram->csr, DRAM_CSR_FAILED); +#endif + setbits_le32(&dram->ccr, DRAM_CCR_DATA_TRAINING); + + /* check whether data training process has completed */ + await_completion(&dram->ccr, DRAM_CCR_DATA_TRAINING); + + /* check data training result */ + reg_val = readl(&dram->csr); + if (reg_val & DRAM_CSR_FAILED) + return -1; + + return 0; +} + +static int dramc_scan_dll_para(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + const u32 dqs_dly[7] = {0x3, 0x2, 0x1, 0x0, 0xe, 0xd, 0xc}; + const u32 clk_dly[15] = {0x07, 0x06, 0x05, 0x04, 0x03, + 0x02, 0x01, 0x00, 0x08, 0x10, + 0x18, 0x20, 0x28, 0x30, 0x38}; + u32 clk_dqs_count[15]; + u32 dqs_i, clk_i, cr_i; + u32 max_val, min_val; + u32 dqs_index, clk_index; + + /* Find DQS_DLY Pass Count for every CLK_DLY */ + for (clk_i = 0; clk_i < 15; clk_i++) { + clk_dqs_count[clk_i] = 0; + clrsetbits_le32(&dram->dllcr[0], 0x3f << 6, + (clk_dly[clk_i] & 0x3f) << 6); + for (dqs_i = 0; dqs_i < 7; dqs_i++) { + for (cr_i = 1; cr_i < 5; cr_i++) { + clrsetbits_le32(&dram->dllcr[cr_i], + 0x4f << 14, + (dqs_dly[dqs_i] & 0x4f) << 14); + } + udelay(2); + if (dramc_scan_readpipe() == 0) + clk_dqs_count[clk_i]++; + } + } + /* Test DQS_DLY Pass Count for every CLK_DLY from up to down */ + for (dqs_i = 15; dqs_i > 0; dqs_i--) { + max_val = 15; + min_val = 15; + for (clk_i = 0; clk_i < 15; clk_i++) { + if (clk_dqs_count[clk_i] == dqs_i) { + max_val = clk_i; + if (min_val == 15) + min_val = clk_i; + } + } + if (max_val < 15) + break; + } + + /* Check if Find a CLK_DLY failed */ + if (!dqs_i) + goto fail; + + /* Find the middle index of CLK_DLY */ + clk_index = (max_val + min_val) >> 1; + if ((max_val == (15 - 1)) && (min_val > 0)) + /* if CLK_DLY[MCTL_CLK_DLY_COUNT] is very good, then the middle + * value can be more close to the max_val + */ + clk_index = (15 + clk_index) >> 1; + else if ((max_val < (15 - 1)) && (min_val == 0)) + /* if CLK_DLY[0] is very good, then the middle value can be more + * close to the min_val + */ + clk_index >>= 1; + if (clk_dqs_count[clk_index] < dqs_i) + clk_index = min_val; + + /* Find the middle index of DQS_DLY for the CLK_DLY got above, and Scan + * read pipe again + */ + clrsetbits_le32(&dram->dllcr[0], 0x3f << 6, + (clk_dly[clk_index] & 0x3f) << 6); + max_val = 7; + min_val = 7; + for (dqs_i = 0; dqs_i < 7; dqs_i++) { + clk_dqs_count[dqs_i] = 0; + for (cr_i = 1; cr_i < 5; cr_i++) { + clrsetbits_le32(&dram->dllcr[cr_i], + 0x4f << 14, + (dqs_dly[dqs_i] & 0x4f) << 14); + } + udelay(2); + if (dramc_scan_readpipe() == 0) { + clk_dqs_count[dqs_i] = 1; + max_val = dqs_i; + if (min_val == 7) + min_val = dqs_i; + } + } + + if (max_val < 7) { + dqs_index = (max_val + min_val) >> 1; + if ((max_val == (7-1)) && (min_val > 0)) + dqs_index = (7 + dqs_index) >> 1; + else if ((max_val < (7-1)) && (min_val == 0)) + dqs_index >>= 1; + if (!clk_dqs_count[dqs_index]) + dqs_index = min_val; + for (cr_i = 1; cr_i < 5; cr_i++) { + clrsetbits_le32(&dram->dllcr[cr_i], + 0x4f << 14, + (dqs_dly[dqs_index] & 0x4f) << 14); + } + udelay(2); + return dramc_scan_readpipe(); + } + +fail: + clrbits_le32(&dram->dllcr[0], 0x3f << 6); + for (cr_i = 1; cr_i < 5; cr_i++) + clrbits_le32(&dram->dllcr[cr_i], 0x4f << 14); + udelay(2); + + return dramc_scan_readpipe(); +} + +static void dramc_clock_output_en(u32 on) +{ +#if defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I) + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + if (on) + setbits_le32(&dram->mcr, DRAM_MCR_DCLK_OUT); + else + clrbits_le32(&dram->mcr, DRAM_MCR_DCLK_OUT); +#endif +} + +static const u16 tRFC_table[2][6] = { + /* 256Mb 512Mb 1Gb 2Gb 4Gb 8Gb */ + /* DDR2 75ns 105ns 127.5ns 195ns 327.5ns invalid */ + { 77, 108, 131, 200, 336, 336 }, + /* DDR3 invalid 90ns 110ns 160ns 300ns 350ns */ + { 93, 93, 113, 164, 308, 359 } +}; + +static void dramc_set_autorefresh_cycle(u32 clk, u32 type, u32 density) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 tRFC, tREFI; + + tRFC = (tRFC_table[type][density] * clk + 1023) >> 10; + tREFI = (7987 * clk) >> 10; /* <= 7.8us */ + + writel(DRAM_DRR_TREFI(tREFI) | DRAM_DRR_TRFC(tRFC), &dram->drr); +} + +unsigned long dramc_init(struct dram_para *para) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 reg_val; + u32 density; + int ret_val; + + /* check input dram parameter structure */ + if (!para) + return 0; + + /* setup DRAM relative clock */ + mctl_setup_dram_clock(para->clock); + + /* reset external DRAM */ + mctl_set_drive(); + + /* dram clock off */ + dramc_clock_output_en(0); + + mctl_itm_disable(); + mctl_enable_dll0(para->tpr3); + + /* configure external DRAM */ + reg_val = 0x0; + if (para->type == DRAM_MEMORY_TYPE_DDR3) + reg_val |= DRAM_DCR_TYPE_DDR3; + reg_val |= DRAM_DCR_IO_WIDTH(para->io_width >> 3); + + if (para->density == 256) + density = DRAM_DCR_CHIP_DENSITY_256M; + else if (para->density == 512) + density = DRAM_DCR_CHIP_DENSITY_512M; + else if (para->density == 1024) + density = DRAM_DCR_CHIP_DENSITY_1024M; + else if (para->density == 2048) + density = DRAM_DCR_CHIP_DENSITY_2048M; + else if (para->density == 4096) + density = DRAM_DCR_CHIP_DENSITY_4096M; + else if (para->density == 8192) + density = DRAM_DCR_CHIP_DENSITY_8192M; + else + density = DRAM_DCR_CHIP_DENSITY_256M; + + reg_val |= DRAM_DCR_CHIP_DENSITY(density); + reg_val |= DRAM_DCR_BUS_WIDTH((para->bus_width >> 3) - 1); + reg_val |= DRAM_DCR_RANK_SEL(para->rank_num - 1); + reg_val |= DRAM_DCR_CMD_RANK_ALL; + reg_val |= DRAM_DCR_MODE(DRAM_DCR_MODE_INTERLEAVE); + writel(reg_val, &dram->dcr); + +#ifdef CONFIG_SUN7I + setbits_le32(&dram->zqcr1, (0x1 << 24) | (0x1 << 1)); + if (para->tpr4 & 0x2) + clrsetbits_le32(&dram->zqcr1, (0x1 << 24), (0x1 << 1)); + dramc_clock_output_en(1); +#endif + +#if (defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I)) + /* set odt impendance divide ratio */ + reg_val = ((para->zq) >> 8) & 0xfffff; + reg_val |= ((para->zq) & 0xff) << 20; + reg_val |= (para->zq) & 0xf0000000; + writel(reg_val, &dram->zqcr0); +#endif + +#ifdef CONFIG_SUN7I + /* Set CKE Delay to about 1ms */ + setbits_le32(&dram->idcr, 0x1ffff); +#endif + +#ifdef CONFIG_SUN7I + if ((readl(&dram->ppwrsctl) & 0x1) != 0x1) + mctl_ddr3_reset(); + else + setbits_le32(&dram->mcr, DRAM_MCR_RESET); +#endif + + udelay(1); + + await_completion(&dram->ccr, DRAM_CCR_INIT); + + mctl_enable_dllx(para->tpr3); + + /* set refresh period */ + dramc_set_autorefresh_cycle(para->clock, para->type - 2, density); + + /* set timing parameters */ + writel(para->tpr0, &dram->tpr0); + writel(para->tpr1, &dram->tpr1); + writel(para->tpr2, &dram->tpr2); + + if (para->type == DRAM_MEMORY_TYPE_DDR3) { + reg_val = DRAM_MR_BURST_LENGTH(0x0); +#if (defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I)) + reg_val |= DRAM_MR_POWER_DOWN; +#endif + reg_val |= DRAM_MR_CAS_LAT(para->cas - 4); + reg_val |= DRAM_MR_WRITE_RECOVERY(0x5); + } else if (para->type == DRAM_MEMORY_TYPE_DDR2) { + reg_val = DRAM_MR_BURST_LENGTH(0x2); + reg_val |= DRAM_MR_CAS_LAT(para->cas); + reg_val |= DRAM_MR_WRITE_RECOVERY(0x5); + } + writel(reg_val, &dram->mr); + + writel(para->emr1, &dram->emr); + writel(para->emr2, &dram->emr2); + writel(para->emr3, &dram->emr3); + + /* set DQS window mode */ + clrsetbits_le32(&dram->ccr, DRAM_CCR_DQS_DRIFT_COMP, DRAM_CCR_DQS_GATE); + +#ifdef CONFIG_SUN7I + /* Command rate timing mode 2T & 1T */ + if (para->tpr4 & 0x1) + setbits_le32(&dram->ccr, DRAM_CCR_COMMAND_RATE_1T); +#endif + /* reset external DRAM */ + setbits_le32(&dram->ccr, DRAM_CCR_INIT); + await_completion(&dram->ccr, DRAM_CCR_INIT); + +#ifdef CONFIG_SUN7I + /* setup zq calibration manual */ + reg_val = readl(&dram->ppwrsctl); + if ((reg_val & 0x1) == 1) { + /* super_standby_flag = 1 */ + + reg_val = readl(0x01c20c00 + 0x120); /* rtc */ + reg_val &= 0x000fffff; + reg_val |= 0x17b00000; + writel(reg_val, &dram->zqcr0); + + /* exit self-refresh state */ + clrsetbits_le32(&dram->dcr, 0x1f << 27, 0x12 << 27); + /* check whether command has been executed */ + await_completion(&dram->dcr, 0x1 << 31); + + udelay(2); + + /* dram pad hold off */ + setbits_le32(&dram->ppwrsctl, 0x16510000); + + await_completion(&dram->ppwrsctl, 0x1); + + /* exit self-refresh state */ + clrsetbits_le32(&dram->dcr, 0x1f << 27, 0x12 << 27); + + /* check whether command has been executed */ + await_completion(&dram->dcr, 0x1 << 31); + + udelay(2); + + /* issue a refresh command */ + clrsetbits_le32(&dram->dcr, 0x1f << 27, 0x13 << 27); + await_completion(&dram->dcr, 0x1 << 31); + + udelay(2); + } +#endif + + /* scan read pipe value */ + mctl_itm_enable(); + if (para->tpr3 & (0x1 << 31)) { + ret_val = dramc_scan_dll_para(); + if (ret_val == 0) + para->tpr3 = + (((readl(&dram->dllcr[0]) >> 6) & 0x3f) << 16) | + (((readl(&dram->dllcr[1]) >> 14) & 0xf) << 0) | + (((readl(&dram->dllcr[2]) >> 14) & 0xf) << 4) | + (((readl(&dram->dllcr[3]) >> 14) & 0xf) << 8) | + (((readl(&dram->dllcr[4]) >> 14) & 0xf) << 12 + ); + } else { + ret_val = dramc_scan_readpipe(); + } + + if (ret_val < 0) + return 0; + + /* configure all host port */ + mctl_configure_hostport(); + + return get_ram_size((long *)PHYS_SDRAM_0, PHYS_SDRAM_0_SIZE); +} diff --git a/arch/arm/include/asm/arch-sunxi/dram.h b/arch/arm/include/asm/arch-sunxi/dram.h new file mode 100644 index 0000000..67fbfad --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/dram.h @@ -0,0 +1,179 @@ +/* + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Berg Xing bergxing@allwinnertech.com + * Tom Cubie tangliang@allwinnertech.com + * + * Sunxi platform dram register definition. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_DRAM_H +#define _SUNXI_DRAM_H + +#include <linux/types.h> + +struct sunxi_dram_reg { + u32 ccr; /* 0x00 controller configuration register */ + u32 dcr; /* 0x04 dram configuration register */ + u32 iocr; /* 0x08 i/o configuration register */ + u32 csr; /* 0x0c controller status register */ + u32 drr; /* 0x10 dram refresh register */ + u32 tpr0; /* 0x14 dram timing parameters register 0 */ + u32 tpr1; /* 0x18 dram timing parameters register 1 */ + u32 tpr2; /* 0x1c dram timing parameters register 2 */ + u32 gdllcr; /* 0x20 global dll control register */ + u8 res0[0x28]; + u32 rslr0; /* 0x4c rank system latency register */ + u32 rslr1; /* 0x50 rank system latency register */ + u8 res1[0x8]; + u32 rdgr0; /* 0x5c rank dqs gating register */ + u32 rdgr1; /* 0x60 rank dqs gating register */ + u8 res2[0x34]; + u32 odtcr; /* 0x98 odt configuration register */ + u32 dtr0; /* 0x9c data training register 0 */ + u32 dtr1; /* 0xa0 data training register 1 */ + u32 dtar; /* 0xa4 data training address register */ + u32 zqcr0; /* 0xa8 zq control register 0 */ + u32 zqcr1; /* 0xac zq control register 1 */ + u32 zqsr; /* 0xb0 zq status register */ + u32 idcr; /* 0xb4 initializaton delay configure reg */ + u8 res3[0x138]; + u32 mr; /* 0x1f0 mode register */ + u32 emr; /* 0x1f4 extended mode register */ + u32 emr2; /* 0x1f8 extended mode register */ + u32 emr3; /* 0x1fc extended mode register */ + u32 dllctr; /* 0x200 dll control register */ + u32 dllcr[5]; /* 0x204 dll control register 0(byte 0) */ + /* 0x208 dll control register 1(byte 1) */ + /* 0x20c dll control register 2(byte 2) */ + /* 0x210 dll control register 3(byte 3) */ + /* 0x214 dll control register 4(byte 4) */ + u32 dqtr0; /* 0x218 dq timing register */ + u32 dqtr1; /* 0x21c dq timing register */ + u32 dqtr2; /* 0x220 dq timing register */ + u32 dqtr3; /* 0x224 dq timing register */ + u32 dqstr; /* 0x228 dqs timing register */ + u32 dqsbtr; /* 0x22c dqsb timing register */ + u32 mcr; /* 0x230 mode configure register */ + u8 res[0x8]; + u32 ppwrsctl; /* 0x23c pad power save control */ + u32 apr; /* 0x240 arbiter period register */ + u32 pldtr; /* 0x244 priority level data threshold reg */ + u8 res5[0x8]; + u32 hpcr[32]; /* 0x250 host port configure register */ + u8 res6[0x10]; + u32 csel; /* 0x2e0 controller select register */ +}; + +struct dram_para { + u32 clock; + u32 type; + u32 rank_num; + u32 density; + u32 io_width; + u32 bus_width; + u32 cas; + u32 zq; + u32 odt_en; + u32 size; + u32 tpr0; + u32 tpr1; + u32 tpr2; + u32 tpr3; + u32 tpr4; + u32 tpr5; + u32 emr1; + u32 emr2; + u32 emr3; +}; + +#define DRAM_CCR_COMMAND_RATE_1T (0x1 << 5) +#define DRAM_CCR_DQS_GATE (0x1 << 14) +#define DRAM_CCR_DQS_DRIFT_COMP (0x1 << 17) +#define DRAM_CCR_ITM_OFF (0x1 << 28) +#define DRAM_CCR_DATA_TRAINING (0x1 << 30) +#define DRAM_CCR_INIT (0x1 << 31) + +#define DRAM_MEMORY_TYPE_DDR1 1 +#define DRAM_MEMORY_TYPE_DDR2 2 +#define DRAM_MEMORY_TYPE_DDR3 3 +#define DRAM_MEMORY_TYPE_LPDDR2 4 +#define DRAM_MEMORY_TYPE_LPDDR 5 +#define DRAM_DCR_TYPE (0x1 << 0) +#define DRAM_DCR_TYPE_DDR2 0x0 +#define DRAM_DCR_TYPE_DDR3 0x1 +#define DRAM_DCR_IO_WIDTH(n) (((n) & 0x3) << 1) +#define DRAM_DCR_IO_WIDTH_MASK DRAM_DCR_IO_WIDTH(0x3) +#define DRAM_DCR_IO_WIDTH_8BIT 0x0 +#define DRAM_DCR_IO_WIDTH_16BIT 0x1 +#define DRAM_DCR_CHIP_DENSITY(n) (((n) & 0x7) << 3) +#define DRAM_DCR_CHIP_DENSITY_MASK DRAM_DCR_CHIP_DENSITY(0x7) +#define DRAM_DCR_CHIP_DENSITY_256M 0x0 +#define DRAM_DCR_CHIP_DENSITY_512M 0x1 +#define DRAM_DCR_CHIP_DENSITY_1024M 0x2 +#define DRAM_DCR_CHIP_DENSITY_2048M 0x3 +#define DRAM_DCR_CHIP_DENSITY_4096M 0x4 +#define DRAM_DCR_CHIP_DENSITY_8192M 0x5 +#define DRAM_DCR_BUS_WIDTH(n) (((n) & 0x7) << 6) +#define DRAM_DCR_BUS_WIDTH_MASK DRAM_DCR_BUS_WIDTH(0x7) +#define DRAM_DCR_BUS_WIDTH_32BIT 0x3 +#define DRAM_DCR_BUS_WIDTH_16BIT 0x1 +#define DRAM_DCR_BUS_WIDTH_8BIT 0x0 +#define DRAM_DCR_NR_DLLCR_32BIT 5 +#define DRAM_DCR_NR_DLLCR_16BIT 3 +#define DRAM_DCR_NR_DLLCR_8BIT 2 +#define DRAM_DCR_RANK_SEL(n) (((n) & 0x3) << 10) +#define DRAM_DCR_RANK_SEL_MASK DRAM_DCR_CMD_RANK(0x3) +#define DRAM_DCR_CMD_RANK_ALL (0x1 << 12) +#define DRAM_DCR_MODE(n) (((n) & 0x3) << 13) +#define DRAM_DCR_MODE_MASK DRAM_DCR_MODE(0x3) +#define DRAM_DCR_MODE_SEQ 0x0 +#define DRAM_DCR_MODE_INTERLEAVE 0x1 + +#define DRAM_CSR_FAILED (0x1 << 20) + +#define DRAM_DRR_TRFC(n) ((n) & 0xff) +#define DRAM_DRR_TREFI(n) (((n) & 0xffff) << 8) +#define DRAM_DRR_BURST(n) ((((n) - 1) & 0xf) << 24) + +#define DRAM_MCR_MODE_NORM(n) (((n) & 0x3) << 0) +#define DRAM_MCR_MODE_NORM_MASK DRAM_MCR_MOD_NORM(0x3) +#define DRAM_MCR_MODE_DQ_OUT(n) (((n) & 0x3) << 2) +#define DRAM_MCR_MODE_DQ_OUT_MASK DRAM_MCR_MODE_DQ_OUT(0x3) +#define DRAM_MCR_MODE_ADDR_OUT(n) (((n) & 0x3) << 4) +#define DRAM_MCR_MODE_ADDR_OUT_MASK DRAM_MCR_MODE_ADDR_OUT(0x3) +#define DRAM_MCR_MODE_DQ_IN_OUT(n) (((n) & 0x3) << 6) +#define DRAM_MCR_MODE_DQ_IN_OUT_MASK DRAM_MCR_MODE_DQ_IN_OUT(0x3) +#define DRAM_MCR_MODE_DQ_TURNON_DELAY(n) (((n) & 0x7) << 8) +#define DRAM_MCR_MODE_DQ_TURNON_DELAY_MASK DRAM_MCR_MODE_DQ_TURNON_DELAY(0x7) +#define DRAM_MCR_MODE_ADDR_IN (0x1 << 11) +#define DRAM_MCR_RESET (0x1 << 12) +#define DRAM_MCR_MODE_EN(n) (((n) & 0x3) << 13) +#define DRAM_MCR_MODE_EN_MASK DRAM_MCR_MOD_EN(0x3) +#define DRAM_MCR_DCLK_OUT (0x1 << 16) + +#define DRAM_DLLCR_NRESET (0x1 << 30) +#define DRAM_DLLCR_DISABLE (0x1 << 31) + +#define DRAM_ZQCR0_IMP_DIV(n) (((n) & 0xff) << 20) +#define DRAM_ZQCR0_IMP_DIV_MASK DRAM_ZQCR0_IMP_DIV(0xff) + +#define DRAM_IOCR_ODT_EN(n) ((((n) & 0x3) << 30) | ((n) & 0x3) << 0) +#define DRAM_IOCR_ODT_EN_MASK DRAM_IOCR_ODT_EN(0x3) + +#define DRAM_MR_BURST_LENGTH(n) (((n) & 0x7) << 0) +#define DRAM_MR_BURST_LENGTH_MASK DRAM_MR_BURST_LENGTH(0x7) +#define DRAM_MR_CAS_LAT(n) (((n) & 0x7) << 4) +#define DRAM_MR_CAS_LAT_MASK DRAM_MR_CAS_LAT(0x7) +#define DRAM_MR_WRITE_RECOVERY(n) (((n) & 0x7) << 9) +#define DRAM_MR_WRITE_RECOVERY_MASK DRAM_MR_WRITE_RECOVERY(0x7) +#define DRAM_MR_POWER_DOWN (0x1 << 12) + +#define DRAM_CSEL_MAGIC 0x16237495 + +unsigned long sunxi_dram_init(void); +unsigned long dramc_init(struct dram_para *para); + +#endif /* _SUNXI_DRAM_H */

This patch adds generic board, start of day and basic build system support for the Allwinner A20 (sun7i) processor. This code will not been compiled until the build is hooked up in a later patch. It has been split out to keep the patches manageable.

Signed-off-by: Adam Sampson ats@offog.org Signed-off-by: Aleksei Mamlin mamlinav@gmail.com Signed-off-by: Alexandru Gagniuc mr.nuke.me@gmail.com Signed-off-by: Chen-Yu Tsai wens@csie.org Signed-off-by: Emilio López emilio@elopez.com.ar Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Henrik Nordstrom henrik@henriknordstrom.net Signed-off-by: Jens Kuske jenskuske@gmail.com Signed-off-by: Luc Verhaegen libv@skynet.be Signed-off-by: Luke Leighton lkcl@lkcl.net Signed-off-by: Oliver Schinagl oliver@schinagl.nl Signed-off-by: Patrick Wood patrickhwood@gmail.com Signed-off-by: Stefan Roese sr@denx.de Signed-off-by: Wills Wang wills.wang.open@gmail.com Signed-off-by: Ian Campbell ijc@hellion.org.uk Reviewed-by: Marek Vasut marex@denx.de Cc: Tom Cubie Mr.hipboi@gmail.com --- v5: Based on 3f5ff92b1503 "sunxi: add comments to pll1_para array." - Correct SRAM_B/SRAM_D memory map

v4: Based on d9fe0a1e061e "sunxi: mksunxiboot: remove unnecessary casts." - No changes required

v3: Based on c89867dca2e9 "sunxi: clocks: clock_get_pll5 prototype and coding style".

v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc: checkpatch whitespace fixes" with v2014.04-rc2 merged in: - just init dram once - remove clock ramping until power control is implemented - add CONFIG_SUN7I to simplify future SUN?I support. - fix a typo

v1: Based on u-boot-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in ldscripts" vs v2014.01. --- arch/arm/cpu/armv7/Makefile | 2 +- arch/arm/cpu/armv7/sunxi/Makefile | 11 +++ arch/arm/cpu/armv7/sunxi/board.c | 88 +++++++++++++++++ arch/arm/cpu/armv7/sunxi/cpu_info.c | 19 ++++ arch/arm/cpu/armv7/sunxi/start.c | 1 + arch/arm/cpu/armv7/sunxi/u-boot-spl-fel.lds | 77 +++++++++++++++ arch/arm/include/asm/arch-sunxi/cpu.h | 122 ++++++++++++++++++++++++ arch/arm/include/asm/arch-sunxi/spl.h | 20 ++++ board/sunxi/Makefile | 11 +++ board/sunxi/board.c | 57 +++++++++++ include/configs/sun7i.h | 24 +++++ include/configs/sunxi-common.h | 141 ++++++++++++++++++++++++++++ 12 files changed, 572 insertions(+), 1 deletion(-) create mode 100644 arch/arm/cpu/armv7/sunxi/board.c create mode 100644 arch/arm/cpu/armv7/sunxi/cpu_info.c create mode 100644 arch/arm/cpu/armv7/sunxi/start.c create mode 100644 arch/arm/cpu/armv7/sunxi/u-boot-spl-fel.lds create mode 100644 arch/arm/include/asm/arch-sunxi/cpu.h create mode 100644 arch/arm/include/asm/arch-sunxi/spl.h create mode 100644 board/sunxi/Makefile create mode 100644 board/sunxi/board.c create mode 100644 include/configs/sun7i.h create mode 100644 include/configs/sunxi-common.h

diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile index 119ebb3..ddf00f3 100644 --- a/arch/arm/cpu/armv7/Makefile +++ b/arch/arm/cpu/armv7/Makefile @@ -12,7 +12,7 @@ obj-y += cache_v7.o obj-y += cpu.o obj-y += syslib.o

-ifneq ($(CONFIG_AM43XX)$(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA)$(CONFIG_MX6)$(CONFIG_TI81XX)$(CONFIG_AT91FAMILY),) +ifneq ($(CONFIG_AM43XX)$(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA)$(CONFIG_MX6)$(CONFIG_TI81XX)$(CONFIG_AT91FAMILY)$(CONFIG_SUNXI),) ifneq ($(CONFIG_SKIP_LOWLEVEL_INIT),y) obj-y += lowlevel_init.o endif diff --git a/arch/arm/cpu/armv7/sunxi/Makefile b/arch/arm/cpu/armv7/sunxi/Makefile index d81d26c..a64bfa1 100644 --- a/arch/arm/cpu/armv7/sunxi/Makefile +++ b/arch/arm/cpu/armv7/sunxi/Makefile @@ -8,7 +8,18 @@ # SPDX-License-Identifier: GPL-2.0+ # obj-y += timer.o +obj-y += board.o obj-y += clock.o obj-y += pinmux.o obj-$(CONFIG_SUN7I) += clock_sun4i.o + +ifndef CONFIG_SPL_BUILD +obj-y += cpu_info.o +endif + +ifdef CONFIG_SPL_BUILD obj-$(CONFIG_SUN7I) += dram.o +ifdef CONFIG_SPL_FEL +obj-y += start.o +endif +endif diff --git a/arch/arm/cpu/armv7/sunxi/board.c b/arch/arm/cpu/armv7/sunxi/board.c new file mode 100644 index 0000000..b5c0cb7 --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/board.c @@ -0,0 +1,88 @@ +/* + * (C) Copyright 2012 Henrik Nordstrom henrik@henriknordstrom.net + * + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * Some init for sunxi platform. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <serial.h> +#ifdef CONFIG_SPL_BUILD +#include <spl.h> +#endif +#include <asm/gpio.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/gpio.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/timer.h> + +#ifdef CONFIG_SPL_BUILD +/* Pointer to the global data structure for SPL */ +DECLARE_GLOBAL_DATA_PTR; + +/* The sunxi internal brom will try to loader external bootloader + * from mmc0, nand flash, mmc2. + * Unfortunately we can't check how SPL was loaded so assume + * it's always the first SD/MMC controller + */ +u32 spl_boot_device(void) +{ + return BOOT_DEVICE_MMC1; +} + +/* No confirmation data available in SPL yet. Hardcode bootmode */ +u32 spl_boot_mode(void) +{ + return MMCSD_MODE_RAW; +} +#endif + +int gpio_init(void) +{ + sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUN4I_GPB22_UART0_TX); + sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUN4I_GPB23_UART0_RX); + sunxi_gpio_set_pull(SUNXI_GPB(23), 1); + + return 0; +} + +void reset_cpu(ulong addr) +{ +} + +/* do some early init */ +void s_init(void) +{ +#if !defined CONFIG_SPL_BUILD && (defined CONFIG_SUN7I || defined CONFIG_SUN6I) + /* Enable SMP mode for CPU0, by setting bit 6 of Auxiliary Ctl reg */ + asm volatile( + "mrc p15, 0, r0, c1, c0, 1\n" + "orr r0, r0, #1 << 6\n" + "mcr p15, 0, r0, c1, c0, 1\n"); +#endif + + clock_init(); + timer_init(); + gpio_init(); + +#ifdef CONFIG_SPL_BUILD + gd = &gdata; + preloader_console_init(); + + sunxi_board_init(); +#endif +} + +#ifndef CONFIG_SYS_DCACHE_OFF +void enable_caches(void) +{ + /* Enable D-cache. I-cache is already enabled in start.S */ + dcache_enable(); +} +#endif diff --git a/arch/arm/cpu/armv7/sunxi/cpu_info.c b/arch/arm/cpu/armv7/sunxi/cpu_info.c new file mode 100644 index 0000000..b4c3d5c --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/cpu_info.c @@ -0,0 +1,19 @@ +/* + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> + +#ifdef CONFIG_DISPLAY_CPUINFO +int print_cpuinfo(void) +{ + puts("CPU: Allwinner A20 (SUN7I)\n"); + return 0; +} +#endif diff --git a/arch/arm/cpu/armv7/sunxi/start.c b/arch/arm/cpu/armv7/sunxi/start.c new file mode 100644 index 0000000..6b392fa --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/start.c @@ -0,0 +1 @@ +/* Intentionally empty. Only needed to get FEL SPL link line right */ diff --git a/arch/arm/cpu/armv7/sunxi/u-boot-spl-fel.lds b/arch/arm/cpu/armv7/sunxi/u-boot-spl-fel.lds new file mode 100644 index 0000000..364e35c --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/u-boot-spl-fel.lds @@ -0,0 +1,77 @@ +/* + * (C) Copyright 2013 + * Henrik Nordstrom henrik@henriknordstrom.net + * + * SPDX-License-Identifier: GPL-2.0+ + */ +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(s_init) +SECTIONS +{ + . = 0x00002000; + + . = ALIGN(4); + .text : + { + *(.text.s_init) + *(.text*) + } + + . = ALIGN(4); + .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } + + . = ALIGN(4); + .data : { + *(.data*) + } + + . = ALIGN(4); + . = .; + + . = ALIGN(4); + .rel.dyn : { + __rel_dyn_start = .; + *(.rel*) + __rel_dyn_end = .; + } + + .dynsym : { + __dynsym_start = .; + *(.dynsym) + } + + . = ALIGN(4); + .note.gnu.build-id : + { + *(.note.gnu.build-id) + } + _end = .; + + . = ALIGN(4096); + .mmutable : { + *(.mmutable) + } + + .bss_start __rel_dyn_start (OVERLAY) : { + KEEP(*(.__bss_start)); + __bss_base = .; + } + + .bss __bss_base (OVERLAY) : { + *(.bss*) + . = ALIGN(4); + __bss_limit = .; + } + + .bss_end __bss_limit (OVERLAY) : { + KEEP(*(.__bss_end)); + } + + /DISCARD/ : { *(.dynstr*) } + /DISCARD/ : { *(.dynamic*) } + /DISCARD/ : { *(.plt*) } + /DISCARD/ : { *(.interp*) } + /DISCARD/ : { *(.gnu*) } + /DISCARD/ : { *(.note*) } +} diff --git a/arch/arm/include/asm/arch-sunxi/cpu.h b/arch/arm/include/asm/arch-sunxi/cpu.h new file mode 100644 index 0000000..a987e51d --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/cpu.h @@ -0,0 +1,122 @@ +/* + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_CPU_H +#define _SUNXI_CPU_H + +#define SUNXI_SRAM_A1_BASE 0x00000000 +#define SUNXI_SRAM_A1_SIZE (16 * 1024) /* 16 kiB */ + +#define SUNXI_SRAM_A2_BASE 0x00004000 /* 16 kiB */ +#define SUNXI_SRAM_A3_BASE 0x00008000 /* 13 kiB */ +#define SUNXI_SRAM_A4_BASE 0x0000b400 /* 3 kiB */ +#define SUNXI_SRAM_D_BASE 0x00010000 /* 4 kiB */ +#define SUNXI_SRAM_B_BASE 0x00020000 /* 64 kiB (secure) */ + +#define SUNXI_SRAMC_BASE 0x01c00000 +#define SUNXI_DRAMC_BASE 0x01c01000 +#define SUNXI_DMA_BASE 0x01c02000 +#define SUNXI_NFC_BASE 0x01c03000 +#define SUNXI_TS_BASE 0x01c04000 +#define SUNXI_SPI0_BASE 0x01c05000 +#define SUNXI_SPI1_BASE 0x01c06000 +#define SUNXI_MS_BASE 0x01c07000 +#define SUNXI_TVD_BASE 0x01c08000 +#define SUNXI_CSI0_BASE 0x01c09000 +#define SUNXI_TVE0_BASE 0x01c0a000 +#define SUNXI_EMAC_BASE 0x01c0b000 +#define SUNXI_LCD0_BASE 0x01c0C000 +#define SUNXI_LCD1_BASE 0x01c0d000 +#define SUNXI_VE_BASE 0x01c0e000 +#define SUNXI_MMC0_BASE 0x01c0f000 +#define SUNXI_MMC1_BASE 0x01c10000 +#define SUNXI_MMC2_BASE 0x01c11000 +#define SUNXI_MMC3_BASE 0x01c12000 +#define SUNXI_USB0_BASE 0x01c13000 +#define SUNXI_USB1_BASE 0x01c14000 +#define SUNXI_SS_BASE 0x01c15000 +#define SUNXI_HDMI_BASE 0x01c16000 +#define SUNXI_SPI2_BASE 0x01c17000 +#define SUNXI_SATA_BASE 0x01c18000 +#define SUNXI_PATA_BASE 0x01c19000 +#define SUNXI_ACE_BASE 0x01c1a000 +#define SUNXI_TVE1_BASE 0x01c1b000 +#define SUNXI_USB2_BASE 0x01c1c000 +#define SUNXI_CSI1_BASE 0x01c1d000 +#define SUNXI_TZASC_BASE 0x01c1e000 +#define SUNXI_SPI3_BASE 0x01c1f000 + +#define SUNXI_CCM_BASE 0x01c20000 +#define SUNXI_INTC_BASE 0x01c20400 +#define SUNXI_PIO_BASE 0x01c20800 +#define SUNXI_TIMER_BASE 0x01c20c00 +#define SUNXI_SPDIF_BASE 0x01c21000 +#define SUNXI_AC97_BASE 0x01c21400 +#define SUNXI_IR0_BASE 0x01c21800 +#define SUNXI_IR1_BASE 0x01c21c00 + +#define SUNXI_IIS_BASE 0x01c22400 +#define SUNXI_LRADC_BASE 0x01c22800 +#define SUNXI_AD_DA_BASE 0x01c22c00 +#define SUNXI_KEYPAD_BASE 0x01c23000 +#define SUNXI_TZPC_BASE 0x01c23400 +#define SUNXI_SID_BASE 0x01c23800 +#define SUNXI_SJTAG_BASE 0x01c23c00 + +#define SUNXI_TP_BASE 0x01c25000 +#define SUNXI_PMU_BASE 0x01c25400 +#define SUNXI_CPUCFG_BASE 0x01c25c00 + +#define SUNXI_UART0_BASE 0x01c28000 +#define SUNXI_UART1_BASE 0x01c28400 +#define SUNXI_UART2_BASE 0x01c28800 +#define SUNXI_UART3_BASE 0x01c28c00 +#define SUNXI_UART4_BASE 0x01c29000 +#define SUNXI_UART5_BASE 0x01c29400 +#define SUNXI_UART6_BASE 0x01c29800 +#define SUNXI_UART7_BASE 0x01c29c00 +#define SUNXI_PS2_0_BASE 0x01c2a000 +#define SUNXI_PS2_1_BASE 0x01c2a400 + +#define SUNXI_TWI0_BASE 0x01c2ac00 +#define SUNXI_TWI1_BASE 0x01c2b000 +#define SUNXI_TWI2_BASE 0x01c2b400 + +#define SUNXI_CAN_BASE 0x01c2bc00 + +#define SUNXI_SCR_BASE 0x01c2c400 + +#define SUNXI_GPS_BASE 0x01c30000 +#define SUNXI_MALI400_BASE 0x01c40000 +#define SUNXI_GMAC_BASE 0x01c50000 + +/* module sram */ +#define SUNXI_SRAM_C_BASE 0x01d00000 + +#define SUNXI_DE_FE0_BASE 0x01e00000 +#define SUNXI_DE_FE1_BASE 0x01e20000 +#define SUNXI_DE_BE0_BASE 0x01e60000 +#define SUNXI_DE_BE1_BASE 0x01e40000 +#define SUNXI_MP_BASE 0x01e80000 +#define SUNXI_AVG_BASE 0x01ea0000 + +/* CoreSight Debug Module */ +#define SUNXI_CSDM_BASE 0x3f500000 + +#define SUNXI_DDRII_DDRIII_BASE 0x40000000 /* 2 GiB */ + +#define SUNXI_BROM_BASE 0xffff0000 /* 32 kiB */ + +#define SUNXI_CPU_CFG (SUNXI_TIMER_BASE + 0x13c) + +#ifndef __ASSEMBLY__ +void sunxi_board_init(void); +void sunxi_reset(void); +#endif /* __ASSEMBLY__ */ + +#endif /* _CPU_H */ diff --git a/arch/arm/include/asm/arch-sunxi/spl.h b/arch/arm/include/asm/arch-sunxi/spl.h new file mode 100644 index 0000000..ff871bc --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/spl.h @@ -0,0 +1,20 @@ +/* + * This is a copy of omap3/spl.h: + * + * (C) Copyright 2012 + * Texas Instruments, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef _ASM_ARCH_SPL_H_ +#define _ASM_SPL_H_ + +#define BOOT_DEVICE_NONE 0 +#define BOOT_DEVICE_XIP 1 +#define BOOT_DEVICE_NAND 2 +#define BOOT_DEVICE_ONE_NAND 3 +#define BOOT_DEVICE_MMC2 5 /*emmc*/ +#define BOOT_DEVICE_MMC1 6 +#define BOOT_DEVICE_XIPWAIT 7 +#define BOOT_DEVICE_MMC2_2 0xff +#endif diff --git a/board/sunxi/Makefile b/board/sunxi/Makefile new file mode 100644 index 0000000..559112e --- /dev/null +++ b/board/sunxi/Makefile @@ -0,0 +1,11 @@ +# +# (C) Copyright 2012 Henrik Nordstrom henrik@henriknordstrom.net +# +# Based on some other board Makefile +# +# (C) Copyright 2000-2003 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# SPDX-License-Identifier: GPL-2.0+ +# +obj-y += board.o diff --git a/board/sunxi/board.c b/board/sunxi/board.c new file mode 100644 index 0000000..328334a --- /dev/null +++ b/board/sunxi/board.c @@ -0,0 +1,57 @@ +/* + * (C) Copyright 2012-2013 Henrik Nordstrom henrik@henriknordstrom.net + * (C) Copyright 2013 Luke Kenneth Casson Leighton lkcl@lkcl.net + * + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * Some board init for the Allwinner A10-evb board. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/arch/clock.h> +#include <asm/arch/dram.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* add board specific code here */ +int board_init(void) +{ + int id_pfr1; + + gd->bd->bi_boot_params = (PHYS_SDRAM_0 + 0x100); + + asm volatile("mrc p15, 0, %0, c0, c1, 1" : "=r"(id_pfr1)); + debug("id_pfr1: 0x%08x\n", id_pfr1); + /* Generic Timer Extension available? */ + if ((id_pfr1 >> 16) & 0xf) { + debug("Setting CNTFRQ\n"); + /* CNTFRQ == 24 MHz */ + asm volatile("mcr p15, 0, %0, c14, c0, 0" : : "r"(24000000)); + } + + return 0; +} + +int dram_init(void) +{ + gd->ram_size = get_ram_size((long *)PHYS_SDRAM_0, PHYS_SDRAM_0_SIZE); + + return 0; +} + +#ifdef CONFIG_SPL_BUILD +void sunxi_board_init(void) +{ + unsigned long ramsize; + + printf("DRAM:"); + ramsize = sunxi_dram_init(); + printf(" %lu MiB\n", ramsize >> 20); + if (!ramsize) + hang(); +} +#endif diff --git a/include/configs/sun7i.h b/include/configs/sun7i.h new file mode 100644 index 0000000..9b693f7 --- /dev/null +++ b/include/configs/sun7i.h @@ -0,0 +1,24 @@ +/* + * (C) Copyright 2012-2013 Henrik Nordstrom henrik@henriknordstrom.net + * (C) Copyright 2013 Luke Kenneth Casson Leighton lkcl@lkcl.net + * + * Configuration settings for the Allwinner A20 (sun7i) CPU + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef __CONFIG_H +#define __CONFIG_H + +/* + * A20 specific configuration + */ +#define CONFIG_SUN7I /* sun7i SoC generation */ + +#define CONFIG_SYS_PROMPT "sun7i# " + +/* + * Include common sunxi configuration where most the settings are + */ +#include <configs/sunxi-common.h> + +#endif /* __CONFIG_H */ diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h new file mode 100644 index 0000000..3f7e314 --- /dev/null +++ b/include/configs/sunxi-common.h @@ -0,0 +1,141 @@ +/* + * (C) Copyright 2012-2012 Henrik Nordstrom henrik@henriknordstrom.net + * + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie tangliang@allwinnertech.com + * + * Configuration settings for the Allwinner sunxi series of boards. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_COMMON_CONFIG_H +#define _SUNXI_COMMON_CONFIG_H + +/* + * High Level Configuration Options + */ +#define CONFIG_SUNXI /* sunxi family */ + +#include <asm/arch/cpu.h> /* get chip and board defs */ + +#define CONFIG_SYS_TEXT_BASE 0x4a000000 + +/* + * Display CPU information + */ +#define CONFIG_DISPLAY_CPUINFO + +/* Serial & console */ +#define CONFIG_SYS_NS16550 +#define CONFIG_SYS_NS16550_SERIAL +/* ns16550 reg in the low bits of cpu reg */ +#define CONFIG_SYS_NS16550_REG_SIZE -4 +#define CONFIG_SYS_NS16550_CLK 24000000 +#define CONFIG_SYS_NS16550_COM1 SUNXI_UART0_BASE +#define CONFIG_SYS_NS16550_COM2 SUNXI_UART1_BASE +#define CONFIG_SYS_NS16550_COM3 SUNXI_UART2_BASE +#define CONFIG_SYS_NS16550_COM4 SUNXI_UART3_BASE + +/* DRAM Base */ +#define CONFIG_SYS_SDRAM_BASE 0x40000000 +#define CONFIG_SYS_INIT_RAM_ADDR 0x0 +#define CONFIG_SYS_INIT_RAM_SIZE 0x8000 /* 32 KiB */ + +#define CONFIG_SYS_INIT_SP_OFFSET \ + (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE) +#define CONFIG_SYS_INIT_SP_ADDR \ + (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET) + +#define CONFIG_NR_DRAM_BANKS 1 +#define PHYS_SDRAM_0 CONFIG_SYS_SDRAM_BASE +#define PHYS_SDRAM_0_SIZE 0x80000000 /* 2 GiB */ + +#define CONFIG_CMD_MEMORY +#define CONFIG_CMD_SETEXPR + +#define CONFIG_SETUP_MEMORY_TAGS +#define CONFIG_CMDLINE_TAG +#define CONFIG_INITRD_TAG + +/* 4MB of malloc() pool */ +#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + (4 << 20)) + +/* + * Miscellaneous configurable options + */ +#define CONFIG_CMD_ECHO +#define CONFIG_SYS_CBSIZE 256 /* Console I/O Buffer Size */ +#define CONFIG_SYS_PBSIZE 384 /* Print Buffer Size */ +#define CONFIG_SYS_MAXARGS 16 /* max number of command args */ +#define CONFIG_SYS_GENERIC_BOARD + +/* Boot Argument Buffer Size */ +#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE + +#define CONFIG_SYS_LOAD_ADDR 0x48000000 /* default load address */ + +/* standalone support */ +#define CONFIG_STANDALONE_LOAD_ADDR 0x48000000 + +#define CONFIG_SYS_HZ 1000 + +/* baudrate */ +#define CONFIG_BAUDRATE 115200 + +/* The stack sizes are set up in start.S using the settings below */ +#define CONFIG_STACKSIZE (256 << 10) /* 256 KiB */ + +/* FLASH and environment organization */ + +#define CONFIG_SYS_NO_FLASH + +#define CONFIG_SYS_MONITOR_LEN (512 << 10) /* 512 KiB */ +#define CONFIG_IDENT_STRING " Allwinner Technology" + +#define CONFIG_ENV_SIZE (128 << 10) /* 128 KiB */ + +#define CONFIG_EXTRA_ENV_SETTINGS \ + "bootm_size=0x10000000\0" + +#define CONFIG_SYS_BOOT_GET_CMDLINE + +#include <config_cmd_default.h> + +#define CONFIG_FAT_WRITE /* enable write access */ + +#define CONFIG_SPL_FRAMEWORK +#define CONFIG_SPL_LIBCOMMON_SUPPORT +#define CONFIG_SPL_SERIAL_SUPPORT +#define CONFIG_SPL_LIBGENERIC_SUPPORT + +#define CONFIG_SPL +#define CONFIG_SPL_LDSCRIPT "arch/arm/cpu/armv7/sunxi/u-boot-spl-fel.lds" +#define CONFIG_SPL_START_S_PATH "arch/arm/cpu/armv7/sunxi" +#define CONFIG_SPL_TEXT_BASE 0x2000 +#define CONFIG_SPL_MAX_SIZE 0x4000 /* 16 KiB */ +/* end of 32 KiB in sram */ +#define LOW_LEVEL_SRAM_STACK 0x00008000 /* End of sram */ +#define CONFIG_SPL_STACK LOW_LEVEL_SRAM_STACK +#define CONFIG_SYS_SPL_MALLOC_START 0x4ff00000 +#define CONFIG_SYS_SPL_MALLOC_SIZE 0x00080000 /* 512 KiB */ + +#undef CONFIG_CMD_FPGA +#undef CONFIG_CMD_NET +#undef CONFIG_CMD_NFS + +#define CONFIG_CONS_INDEX 1 /* UART0 */ + +#if !defined CONFIG_ENV_IS_IN_MMC && \ + !defined CONFIG_ENV_IS_IN_NAND && \ + !defined CONFIG_ENV_IS_IN_FAT && \ + !defined CONFIG_ENV_IS_IN_SPI_FLASH +#define CONFIG_ENV_IS_NOWHERE +#endif + +#ifndef CONFIG_SPL_BUILD +#include <config_distro_defaults.h> +#endif + +#endif /* _SUNXI_COMMON_CONFIG_H */

Signed-off-by: Oliver Schinagl oliver@schinagl.nl Signed-off-by: Jens Kuske jenskuske@gmail.com Signed-off-by: Ian Campbell ijc@hellion.org.uk Reviewed-by: Tom Rini trini@ti.com Reviewed-by: Marek Vasut marex@denx.de --- v5: Based on 3f5ff92b1503 "sunxi: add comments to pll1_para array." - No changes required

v4: Based on d9fe0a1e061e "sunxi: mksunxiboot: remove unnecessary casts." - No changes required

v3: Based on c89867dca2e9 "sunxi: clocks: clock_get_pll5 prototype and coding style".

v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc: checkpatch whitespace fixes" with v2014.04-rc2 merged in.

v1: Based on u-boot-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in ldscripts" vs v2014.01. --- board/sunxi/Makefile | 1 + board/sunxi/dram_cubietruck.c | 31 +++++++++++++++++++++++++++++++ boards.cfg | 1 + 3 files changed, 33 insertions(+) create mode 100644 board/sunxi/dram_cubietruck.c

diff --git a/board/sunxi/Makefile b/board/sunxi/Makefile index 559112e..18b1e11 100644 --- a/board/sunxi/Makefile +++ b/board/sunxi/Makefile @@ -9,3 +9,4 @@ # SPDX-License-Identifier: GPL-2.0+ # obj-y += board.o +obj-$(CONFIG_CUBIETRUCK) += dram_cubietruck.o diff --git a/board/sunxi/dram_cubietruck.c b/board/sunxi/dram_cubietruck.c new file mode 100644 index 0000000..fbcd687 --- /dev/null +++ b/board/sunxi/dram_cubietruck.c @@ -0,0 +1,31 @@ +/* this file is generated, don't edit it yourself */ + +#include <common.h> +#include <asm/arch/dram.h> + +static struct dram_para dram_para = { + .clock = 432, + .type = 3, + .rank_num = 1, + .density = 4096, + .io_width = 8, + .bus_width = 32, + .cas = 9, + .zq = 0x7f, + .odt_en = 0, + .size = 2048, + .tpr0 = 0x42d899b7, + .tpr1 = 0xa090, + .tpr2 = 0x22a00, + .tpr3 = 0x0, + .tpr4 = 0x1, + .tpr5 = 0x0, + .emr1 = 0x4, + .emr2 = 0x10, + .emr3 = 0x0, +}; + +unsigned long sunxi_dram_init(void) +{ + return dramc_init(&dram_para); +} diff --git a/boards.cfg b/boards.cfg index b4203f1..31b02df 100644 --- a/boards.cfg +++ b/boards.cfg @@ -371,6 +371,7 @@ Active arm armv7 rmobile renesas lager Active arm armv7 s5pc1xx samsung goni s5p_goni - Mateusz Zalega m.zalega@samsung.com Active arm armv7 s5pc1xx samsung smdkc100 smdkc100 - Minkyu Kang mk7.kang@samsung.com Active arm armv7 socfpga altera socfpga socfpga_cyclone5 - - +Active arm armv7 sunxi - sunxi Cubietruck_FEL sun7i:CUBIETRUCK,SPL_FEL - Active arm armv7 u8500 st-ericsson snowball snowball - Mathieu Poirier mathieu.poirier@linaro.org Active arm armv7 u8500 st-ericsson u8500 u8500_href - - Active arm armv7 vf610 freescale vf610twr vf610twr vf610twr:IMX_CONFIG=board/freescale/vf610twr/imximage.cfg Alison Wang b18965@freescale.com