Changes in relation to FriendlyARM's U-Boot nanopi2-v2016.01: - SPL not supported yet --> no spl-directory in arch/arm/mach-nexell. Appropriate line in Makefile removed. - clock.c: 'section(".data")' added to declaration of clk_periphs[] and core_hz. - Kconfig: Changes to have a structure like in mach-bcm283x/Kconfig, e.g. "config ..." entries moved from other Kconfig. - timer.c: 'section(".data")' added to declaration of timestamp and lastdec.
Signed-off-by: Stefan Bosch stefan_b@posteo.net ---
arch/arm/Kconfig | 7 + arch/arm/Makefile | 1 + arch/arm/mach-nexell/Kconfig | 67 +++ arch/arm/mach-nexell/Makefile | 15 + arch/arm/mach-nexell/clock.c | 869 ++++++++++++++++++++++++++++++++++ arch/arm/mach-nexell/cmd_boot_linux.c | 145 ++++++ arch/arm/mach-nexell/config.mk | 11 + arch/arm/mach-nexell/nx_gpio.c | 352 ++++++++++++++ arch/arm/mach-nexell/nx_sec_reg.c | 82 ++++ arch/arm/mach-nexell/reg-call.S | 23 + arch/arm/mach-nexell/reset.c | 33 ++ arch/arm/mach-nexell/serial.c | 262 ++++++++++ arch/arm/mach-nexell/tieoff.c | 109 +++++ arch/arm/mach-nexell/timer.c | 297 ++++++++++++ 14 files changed, 2273 insertions(+) create mode 100644 arch/arm/mach-nexell/Kconfig create mode 100644 arch/arm/mach-nexell/Makefile create mode 100644 arch/arm/mach-nexell/clock.c create mode 100644 arch/arm/mach-nexell/cmd_boot_linux.c create mode 100644 arch/arm/mach-nexell/config.mk create mode 100644 arch/arm/mach-nexell/nx_gpio.c create mode 100644 arch/arm/mach-nexell/nx_sec_reg.c create mode 100644 arch/arm/mach-nexell/reg-call.S create mode 100644 arch/arm/mach-nexell/reset.c create mode 100644 arch/arm/mach-nexell/serial.c create mode 100644 arch/arm/mach-nexell/tieoff.c create mode 100644 arch/arm/mach-nexell/timer.c
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a623ef5..469aa65 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -875,6 +875,11 @@ config ARCH_MX5 select CPU_V7A imply MXC_GPIO
+config ARCH_NEXELL + bool "Nexell S5P4418/S5P6818 SoC" + select ENABLE_ARM_SOC_BOOT0_HOOK + select DM + config ARCH_OWL bool "Actions Semi OWL SoCs" select ARM64 @@ -1797,6 +1802,8 @@ source "arch/arm/cpu/armv8/Kconfig"
source "arch/arm/mach-imx/Kconfig"
+source "arch/arm/mach-nexell/Kconfig" + source "board/bosch/shc/Kconfig" source "board/bosch/guardian/Kconfig" source "board/CarMediaLab/flea3/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 1e60a9f..5a390b8 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -67,6 +67,7 @@ machine-$(CONFIG_ARCH_MESON) += meson machine-$(CONFIG_ARCH_MVEBU) += mvebu # TODO: rename CONFIG_TEGRA -> CONFIG_ARCH_TEGRA # TODO: rename CONFIG_ORION5X -> CONFIG_ARCH_ORION5X +machine-$(CONFIG_ARCH_NEXELL) += nexell machine-$(CONFIG_ORION5X) += orion5x machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 machine-$(CONFIG_ARCH_OWL) += owl diff --git a/arch/arm/mach-nexell/Kconfig b/arch/arm/mach-nexell/Kconfig new file mode 100644 index 0000000..5368909 --- /dev/null +++ b/arch/arm/mach-nexell/Kconfig @@ -0,0 +1,67 @@ +if ARCH_NEXELL + +config NEXELL_COMMON + bool "Nexell common options" + +config NEXELL_ARMV7_COMMON + bool "Nexell 32-bit common options" + select CPU_V7A + select NEXELL_COMMON + #select SUPPORT_SPL + +config NEXELL_ARMV8_COMMON + bool "Nexell 64-bit common options" + select ARM64 + select ARMV8_MULTIENTRY + select NEXELL_COMMON + +config ARCH_S5P4418 + bool "Nexell S5P4418 SoC" + select NEXELL_ARMV7_COMMON + select OF_CONTROL + select OF_SEPARATE + select NX_GPIO + select PL011_SERIAL + select PL011_SERIAL_FLUSH_ON_INIT + +config ARCH_S5P6818 + bool "Nexell S5P6818 SoC" + select NEXELL_ARMV8_COMMON + +menu "Nexell S5P4418/S5P6818" + #depends on ARCH_S5P4418 + depends on ARCH_NEXELL + +choice + prompt "Nexell S5P4418/S5P6818 board select" + optional + +config TARGET_NANOPI2 + bool "FriendlyARM NanoPi2 Board" + select ARCH_S5P4418 + +endchoice + +config SYS_BOARD + default "nanopi2" + +config SYS_VENDOR + default "friendlyarm" + +config SYS_SOC + default "nexell" + +config SYS_CONFIG_NAME + default "s5p4418_nanopi2" + +endmenu + +config SYS_PLLFIN + int + +config TIMER_SYS_TICK_CH + int + +source "board/friendlyarm/Kconfig" + +endif diff --git a/arch/arm/mach-nexell/Makefile b/arch/arm/mach-nexell/Makefile new file mode 100644 index 0000000..e144196 --- /dev/null +++ b/arch/arm/mach-nexell/Makefile @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# (C) Copyright 2016 Nexell +# Hyunseok, Jung hsjung@nexell.co.kr + +obj-y += clock.o +obj-y += timer.o +obj-y += reset.o +obj-y += nx_gpio.o +obj-y += tieoff.o +obj-$(CONFIG_ARCH_S5P4418) += reg-call.o +obj-$(CONFIG_ARCH_S5P4418) += nx_sec_reg.o +obj-$(CONFIG_CMD_BOOTL) += cmd_boot_linux.o +obj-$(CONFIG_S5P_SERIAL) += serial.o +obj-$(CONFIG_SPL_BUILD) += spl/ diff --git a/arch/arm/mach-nexell/clock.c b/arch/arm/mach-nexell/clock.c new file mode 100644 index 0000000..a0ba2d8 --- /dev/null +++ b/arch/arm/mach-nexell/clock.c @@ -0,0 +1,869 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 Nexell + * Hyunseok, Jung hsjung@nexell.co.kr + */ + +#include <common.h> +#include <command.h> +#include <linux/err.h> +#include <asm/io.h> +#include <asm/arch/nexell.h> +#include <asm/arch/clk.h> + +/* + * clock generator macros + */ +#define I_PLL0_BIT (0) +#define I_PLL1_BIT (1) +#define I_PLL2_BIT (2) +#define I_PLL3_BIT (3) +#define I_EXT1_BIT (4) +#define I_EXT2_BIT (5) +#define I_CLKn_BIT (7) +#define I_EXT1_BIT_FORCE (8) +#define I_EXT2_BIT_FORCE (9) + +#define I_CLOCK_NUM 6 /* PLL0, PLL1, PLL2, PLL3, EXT1, EXT2 */ + +#define I_EXECEPT_CLK (0) +#define I_CLOCK_MASK (((1 << I_CLOCK_NUM) - 1) & ~I_EXECEPT_CLK) + +#define I_PLL0 (1 << I_PLL0_BIT) +#define I_PLL1 (1 << I_PLL1_BIT) +#define I_PLL2 (1 << I_PLL2_BIT) +#define I_PLL3 (1 << I_PLL3_BIT) +#define I_EXTCLK1 (1 << I_EXT1_BIT) +#define I_EXTCLK2 (1 << I_EXT2_BIT) +#define I_EXTCLK1_FORCE (1 << I_EXT1_BIT_FORCE) +#define I_EXTCLK2_FORCE (1 << I_EXT2_BIT_FORCE) + +#define I_PLL_0_1 (I_PLL0 | I_PLL1) +#define I_PLL_0_2 (I_PLL_0_1 | I_PLL2) +#define I_PLL_0_3 (I_PLL_0_2 | I_PLL3) +#define I_CLKnOUT (0) + +#define I_PCLK (1 << 16) +#define I_BCLK (1 << 17) +#define I_GATE_PCLK (1 << 20) +#define I_GATE_BCLK (1 << 21) +#define I_PCLK_MASK (I_GATE_PCLK | I_PCLK) +#define I_BCLK_MASK (I_GATE_BCLK | I_BCLK) + +struct clk_dev_peri { + const char *dev_name; + void __iomem *base; + int dev_id; + int periph_id; + int clk_step; + u32 in_mask; + u32 in_mask1; + int div_src_0; + int div_val_0; + int invert_0; + int div_src_1; + int div_val_1; + int invert_1; + int in_extclk_1; + int in_extclk_2; +}; + +struct clk_dev { + struct clk clk; + struct clk *link; + const char *name; + struct clk_dev_peri *peri; +}; + +struct clk_dev_map { + unsigned int con_enb; + unsigned int con_gen[4]; +}; + +#define CLK_PERI_1S(name, devid, id, addr, mk)[id] = \ + { .dev_name = name, .dev_id = devid, .periph_id = id, .clk_step = 1, \ + .base = (void *)addr, .in_mask = mk, } + +#define CLK_PERI_2S(name, devid, id, addr, mk, mk2)[id] = \ + { .dev_name = name, .dev_id = devid, .periph_id = id, .clk_step = 2, \ + .base = (void *)addr, .in_mask = mk, .in_mask1 = mk2, } + +static const char * const clk_core[] = { + CORECLK_NAME_PLL0, CORECLK_NAME_PLL1, CORECLK_NAME_PLL2, + CORECLK_NAME_PLL3, CORECLK_NAME_FCLK, CORECLK_NAME_MCLK, + CORECLK_NAME_BCLK, CORECLK_NAME_PCLK, CORECLK_NAME_HCLK, +}; + +/* + * Section ".data" must be used because BSS is not available before relocation, + * in board_init_f(), respectively! I.e. global variables can not be used! + */ +static struct clk_dev_peri clk_periphs[] + __attribute__((section(".data"))) = { + CLK_PERI_1S(DEV_NAME_TIMER, 0, CLK_ID_TIMER_0, + PHY_BASEADDR_CLKGEN14, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_TIMER, 1, CLK_ID_TIMER_1, + PHY_BASEADDR_CLKGEN0, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_TIMER, 2, CLK_ID_TIMER_2, + PHY_BASEADDR_CLKGEN1, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_TIMER, 3, CLK_ID_TIMER_3, + PHY_BASEADDR_CLKGEN2, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_UART, 0, CLK_ID_UART_0, + PHY_BASEADDR_CLKGEN22, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_UART, 1, CLK_ID_UART_1, + PHY_BASEADDR_CLKGEN24, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_UART, 2, CLK_ID_UART_2, + PHY_BASEADDR_CLKGEN23, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_UART, 3, CLK_ID_UART_3, + PHY_BASEADDR_CLKGEN25, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_UART, 4, CLK_ID_UART_4, + PHY_BASEADDR_CLKGEN26, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_UART, 5, CLK_ID_UART_5, + PHY_BASEADDR_CLKGEN27, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_PWM, 0, CLK_ID_PWM_0, + PHY_BASEADDR_CLKGEN13, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_PWM, 1, CLK_ID_PWM_1, + PHY_BASEADDR_CLKGEN3, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_PWM, 2, CLK_ID_PWM_2, + PHY_BASEADDR_CLKGEN4, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_PWM, 3, CLK_ID_PWM_3, + PHY_BASEADDR_CLKGEN5, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_I2C, 0, CLK_ID_I2C_0, + PHY_BASEADDR_CLKGEN6, (I_GATE_PCLK)), + CLK_PERI_1S(DEV_NAME_I2C, 1, CLK_ID_I2C_1, + PHY_BASEADDR_CLKGEN7, (I_GATE_PCLK)), + CLK_PERI_1S(DEV_NAME_I2C, 2, CLK_ID_I2C_2, + PHY_BASEADDR_CLKGEN8, (I_GATE_PCLK)), + CLK_PERI_2S(DEV_NAME_GMAC, 0, CLK_ID_GMAC, + PHY_BASEADDR_CLKGEN10, + (I_PLL_0_3 | I_EXTCLK1 | I_EXTCLK1_FORCE), + (I_CLKnOUT)), + CLK_PERI_2S(DEV_NAME_I2S, 0, CLK_ID_I2S_0, + PHY_BASEADDR_CLKGEN15, (I_PLL_0_3 | I_EXTCLK1), + (I_CLKnOUT)), + CLK_PERI_2S(DEV_NAME_I2S, 1, CLK_ID_I2S_1, + PHY_BASEADDR_CLKGEN16, (I_PLL_0_3 | I_EXTCLK1), + (I_CLKnOUT)), + CLK_PERI_2S(DEV_NAME_I2S, 2, CLK_ID_I2S_2, + PHY_BASEADDR_CLKGEN17, (I_PLL_0_3 | I_EXTCLK1), + (I_CLKnOUT)), + CLK_PERI_1S(DEV_NAME_SDHC, 0, CLK_ID_SDHC_0, + PHY_BASEADDR_CLKGEN18, (I_PLL_0_2 | I_GATE_PCLK)), + CLK_PERI_1S(DEV_NAME_SDHC, 1, CLK_ID_SDHC_1, + PHY_BASEADDR_CLKGEN19, (I_PLL_0_2 | I_GATE_PCLK)), + CLK_PERI_1S(DEV_NAME_SDHC, 2, CLK_ID_SDHC_2, + PHY_BASEADDR_CLKGEN20, (I_PLL_0_2 | I_GATE_PCLK)), + CLK_PERI_1S(DEV_NAME_SPI, 0, CLK_ID_SPI_0, + PHY_BASEADDR_CLKGEN37, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_SPI, 1, CLK_ID_SPI_1, + PHY_BASEADDR_CLKGEN38, (I_PLL_0_2)), + CLK_PERI_1S(DEV_NAME_SPI, 2, CLK_ID_SPI_2, + PHY_BASEADDR_CLKGEN39, (I_PLL_0_2)), +}; + +#define CLK_PERI_NUM ((int)ARRAY_SIZE(clk_periphs)) +#define CLK_CORE_NUM ((int)ARRAY_SIZE(clk_core)) +#define CLK_DEVS_NUM (CLK_CORE_NUM + CLK_PERI_NUM) +#define MAX_DIVIDER ((1 << 8) - 1) /* 256, align 2 */ + +static struct clk_dev st_clk_devs[CLK_DEVS_NUM] + __attribute__((section(".data"))); +#define clk_dev_get(n) ((struct clk_dev *)&st_clk_devs[n]) +#define clk_container(p) (container_of(p, struct clk_dev, clk)) + +/* + * Core frequencys + */ +struct _core_hz_ { + unsigned long pll[4]; /* PLL */ + unsigned long cpu_fclk, cpu_bclk; /* cpu */ + unsigned long mem_fclk, mem_dclk, mem_bclk, mem_pclk; /* ddr */ + unsigned long bus_bclk, bus_pclk; /* bus */ +#if defined(CONFIG_ARCH_S5P6818) + unsigned long cci4_bclk, cci4_pclk; /* cci */ +#endif + /* ip */ + unsigned long g3d_bclk; + unsigned long coda_bclk, coda_pclk; +#if defined(CONFIG_ARCH_S5P6818) + unsigned long disp_bclk, disp_pclk; + unsigned long hdmi_pclk; +#endif +}; + +/* + * Section ".data" must be used because BSS is not available before relocation, + * in board_init_f(), respectively! I.e. global variables can not be used! + */ +/* core clock */ +static struct _core_hz_ core_hz __attribute__((section(".data"))); + +#define CORE_HZ_SIZE (sizeof(core_hz) / 4) + +/* + * CLKGEN HW + */ +static inline void clk_dev_bclk(void *base, int on) +{ + struct clk_dev_map *reg = base; + unsigned int val = readl(®->con_enb) & ~(0x3); + + val |= (on ? 3 : 0) & 0x3; /* always BCLK */ + writel(val, ®->con_enb); +} + +static inline void clk_dev_pclk(void *base, int on) +{ + struct clk_dev_map *reg = base; + unsigned int val = 0; + + if (!on) + return; + + val = readl(®->con_enb) & ~(1 << 3); + val |= (1 << 3); + writel(val, ®->con_enb); +} + +static inline void clk_dev_rate(void *base, int step, int src, int div) +{ + struct clk_dev_map *reg = base; + unsigned int val = 0; + + val = readl(®->con_gen[step << 1]); + val &= ~(0x07 << 2); + val |= (src << 2); /* source */ + val &= ~(0xFF << 5); + val |= (div - 1) << 5; /* divider */ + writel(val, ®->con_gen[step << 1]); +} + +static inline void clk_dev_inv(void *base, int step, int inv) +{ + struct clk_dev_map *reg = base; + unsigned int val = readl(®->con_gen[step << 1]) & ~(1 << 1); + + val |= (inv << 1); + writel(val, ®->con_gen[step << 1]); +} + +static inline void clk_dev_enb(void *base, int on) +{ + struct clk_dev_map *reg = base; + unsigned int val = readl(®->con_enb) & ~(1 << 2); + + val |= ((on ? 1 : 0) << 2); + writel(val, ®->con_enb); +} + +/* + * CORE FREQUENCY + * + * PLL0 [P,M,S] ------- | | ----- [DIV0] --- CPU-G0 + * |M| ----- [DIV1] --- BCLK/PCLK + * PLL1 [P,M,S] ------- | | ----- [DIV2] --- DDR + * |U| ----- [DIV3] --- 3D + * PLL2 [P,M,S,K]-------| | ----- [DIV4] --- CODA + * |X| ----- [DIV5] --- DISPLAY + * PLL3 [P,M,S,K]-------| | ----- [DIV6] --- HDMI + * | | ----- [DIV7] --- CPU-G1 + * | | ----- [DIV8] --- CCI-400(FASTBUS) + * + */ + +struct nx_clkpwr_registerset { + u32 clkmodereg0; /* 0x000 : Clock Mode Register0 */ + u32 __reserved0; /* 0x004 */ + u32 pllsetreg[4]; /* 0x008 ~ 0x014 : PLL Setting Register */ + u32 __reserved1[2]; /* 0x018 ~ 0x01C */ + u32 dvoreg[9]; /* 0x020 ~ 0x040 : Divider Setting Register */ + u32 __Reserved2; /* 0x044 */ + u32 pllsetreg_sscg[6]; /* 0x048 ~ 0x05C */ + u32 __reserved3[8]; /* 0x060 ~ 0x07C */ + u8 __reserved4[0x200 - 0x80]; /* padding (0x80 ~ 0x1FF) */ + u32 gpiowakeupriseenb; /* 0x200 : GPIO Rising Edge Detect En. Reg. */ + u32 gpiowakeupfallenb; /* 0x204 : GPIO Falling Edge Detect En. Reg. */ + u32 gpiorstenb; /* 0x208 : GPIO Reset Enable Register */ + u32 gpiowakeupenb; /* 0x20C : GPIO Wakeup Source Enable */ + u32 gpiointenb; /* 0x210 : Interrupt Enable Register */ + u32 gpiointpend; /* 0x214 : Interrupt Pend Register */ + u32 resetstatus; /* 0x218 : Reset Status Register */ + u32 intenable; /* 0x21C : Interrupt Enable Register */ + u32 intpend; /* 0x220 : Interrupt Pend Register */ + u32 pwrcont; /* 0x224 : Power Control Register */ + u32 pwrmode; /* 0x228 : Power Mode Register */ + u32 __reserved5; /* 0x22C : Reserved Region */ + u32 scratch[3]; /* 0x230 ~ 0x238 : Scratch Register */ + u32 sysrstconfig; /* 0x23C : System Reset Configuration Reg. */ + u8 __reserved6[0x2A0 - 0x240]; /* padding (0x240 ~ 0x29F) */ + u32 cpupowerdownreq; /* 0x2A0 : CPU Power Down Request Register */ + u32 cpupoweronreq; /* 0x2A4 : CPU Power On Request Register */ + u32 cpuresetmode; /* 0x2A8 : CPU Reset Mode Register */ + u32 cpuwarmresetreq; /* 0x2AC : CPU Warm Reset Request Register */ + u32 __reserved7; /* 0x2B0 */ + u32 cpustatus; /* 0x2B4 : CPU Status Register */ + u8 __reserved8[0x400 - 0x2B8]; /* padding (0x2B8 ~ 0x33F) */ +}; + +static struct nx_clkpwr_registerset * const clkpwr = + (struct nx_clkpwr_registerset *)PHY_BASEADDR_CLKPWR; + +#define getquotient(v, d) ((v) / (d)) + +#define DIV_CPUG0 0 +#define DIV_BUS 1 +#define DIV_MEM 2 +#define DIV_G3D 3 +#define DIV_CODA 4 +#if defined(CONFIG_ARCH_S5P6818) +#define DIV_DISP 5 +#define DIV_HDMI 6 +#define DIV_CPUG1 7 +#define DIV_CCI4 8 +#endif + +#define DVO0 3 +#define DVO1 9 +#define DVO2 15 +#define DVO3 21 + +static unsigned int pll_rate(unsigned int plln, unsigned int xtal) +{ + unsigned int val, val1, nP, nM, nS, nK; + unsigned int temp = 0; + + val = clkpwr->pllsetreg[plln]; + val1 = clkpwr->pllsetreg_sscg[plln]; + xtal /= 1000; /* Unit Khz */ + + nP = (val >> 18) & 0x03F; + nM = (val >> 8) & 0x3FF; + nS = (val >> 0) & 0x0FF; + nK = (val1 >> 16) & 0xFFFF; + + if (plln > 1 && nK) { + temp = (unsigned int)(getquotient((getquotient((nK * 1000), + 65536) * xtal), nP) >> nS); + } + + temp = (unsigned int)((getquotient((nM * xtal), nP) >> nS) * 1000) + + temp; + return temp; +} + +static unsigned int pll_dvo(int dvo) +{ + unsigned int val; + + val = (clkpwr->dvoreg[dvo] & 0x7); + return val; +} + +static unsigned int pll_div(int dvo) +{ + unsigned int val = clkpwr->dvoreg[dvo]; + + return ((((val >> DVO3) & 0x3F) + 1) << 24) | + ((((val >> DVO2) & 0x3F) + 1) << 16) | + ((((val >> DVO1) & 0x3F) + 1) << 8) | + ((((val >> DVO0) & 0x3F) + 1) << 0); +} + +#define PLLN_RATE(n) (pll_rate(n, CONFIG_SYS_PLLFIN)) /* 0~ 3 */ +#define CPU_FCLK_RATE(n) (pll_rate(pll_dvo(n), CONFIG_SYS_PLLFIN) / \ + ((pll_div(n) >> 0) & 0x3F)) +#define CPU_BCLK_RATE(n) (pll_rate(pll_dvo(n), CONFIG_SYS_PLLFIN) / \ + ((pll_div(n) >> 0) & 0x3F) / \ + ((pll_div(n) >> 8) & 0x3F)) + +#define MEM_FCLK_RATE() (pll_rate(pll_dvo(DIV_MEM), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_MEM) >> 0) & 0x3F) / \ + ((pll_div(DIV_MEM) >> 8) & 0x3F)) + +#define MEM_DCLK_RATE() (pll_rate(pll_dvo(DIV_MEM), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_MEM) >> 0) & 0x3F)) + +#define MEM_BCLK_RATE() (pll_rate(pll_dvo(DIV_MEM), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_MEM) >> 0) & 0x3F) / \ + ((pll_div(DIV_MEM) >> 8) & 0x3F) / \ + ((pll_div(DIV_MEM) >> 16) & 0x3F)) +#define MEM_PCLK_RATE() (pll_rate(pll_dvo(DIV_MEM), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_MEM) >> 0) & 0x3F) / \ + ((pll_div(DIV_MEM) >> 8) & 0x3F) / \ + ((pll_div(DIV_MEM) >> 16) & 0x3F) / \ + ((pll_div(DIV_MEM) >> 24) & 0x3F)) + +#define BUS_BCLK_RATE() (pll_rate(pll_dvo(DIV_BUS), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_BUS) >> 0) & 0x3F)) +#define BUS_PCLK_RATE() (pll_rate(pll_dvo(DIV_BUS), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_BUS) >> 0) & 0x3F) / \ + ((pll_div(DIV_BUS) >> 8) & 0x3F)) + +#define G3D_BCLK_RATE() (pll_rate(pll_dvo(DIV_G3D), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_G3D) >> 0) & 0x3F)) + +#define MPG_BCLK_RATE() (pll_rate(pll_dvo(DIV_CODA), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_CODA) >> 0) & 0x3F)) +#define MPG_PCLK_RATE() (pll_rate(pll_dvo(DIV_CODA), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_CODA) >> 0) & 0x3F) / \ + ((pll_div(DIV_CODA) >> 8) & 0x3F)) + +#if defined(CONFIG_ARCH_S5P6818) +#define DISP_BCLK_RATE() (pll_rate(pll_dvo(DIV_DISP), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_DISP) >> 0) & 0x3F)) +#define DISP_PCLK_RATE() (pll_rate(pll_dvo(DIV_DISP), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_DISP) >> 0) & 0x3F) / \ + ((pll_div(DIV_DISP) >> 8) & 0x3F)) + +#define HDMI_PCLK_RATE() (pll_rate(pll_dvo(DIV_HDMI), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_HDMI) >> 0) & 0x3F)) + +#define CCI4_BCLK_RATE() (pll_rate(pll_dvo(DIV_CCI4), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_CCI4) >> 0) & 0x3F)) +#define CCI4_PCLK_RATE() (pll_rate(pll_dvo(DIV_CCI4), CONFIG_SYS_PLLFIN) / \ + ((pll_div(DIV_CCI4) >> 0) & 0x3F) / \ + ((pll_div(DIV_CCI4) >> 8) & 0x3F)) +#endif + +static void core_update_rate(int type) +{ + switch (type) { + case 0: + core_hz.pll[0] = PLLN_RATE(0); break; + case 1: + core_hz.pll[1] = PLLN_RATE(1); break; + case 2: + core_hz.pll[2] = PLLN_RATE(2); break; + case 3: + core_hz.pll[3] = PLLN_RATE(3); break; + case 4: + core_hz.cpu_fclk = CPU_FCLK_RATE(DIV_CPUG0); break; + case 5: + core_hz.mem_fclk = MEM_FCLK_RATE(); break; + case 6: + core_hz.bus_bclk = BUS_BCLK_RATE(); break; + case 7: + core_hz.bus_pclk = BUS_PCLK_RATE(); break; + case 8: + core_hz.cpu_bclk = CPU_BCLK_RATE(DIV_CPUG0); break; + case 9: + core_hz.mem_dclk = MEM_DCLK_RATE(); break; + case 10: + core_hz.mem_bclk = MEM_BCLK_RATE(); break; + case 11: + core_hz.mem_pclk = MEM_PCLK_RATE(); break; + case 12: + core_hz.g3d_bclk = G3D_BCLK_RATE(); break; + case 13: + core_hz.coda_bclk = MPG_BCLK_RATE(); break; + case 14: + core_hz.coda_pclk = MPG_PCLK_RATE(); break; +#if defined(CONFIG_ARCH_S5P6818) + case 15: + core_hz.disp_bclk = DISP_BCLK_RATE(); break; + case 16: + core_hz.disp_pclk = DISP_PCLK_RATE(); break; + case 17: + core_hz.hdmi_pclk = HDMI_PCLK_RATE(); break; + case 18: + core_hz.cci4_bclk = CCI4_BCLK_RATE(); break; + case 19: + core_hz.cci4_pclk = CCI4_PCLK_RATE(); break; +#endif + }; +} + +static unsigned long core_get_rate(int type) +{ + unsigned long rate = 0; + + switch (type) { + case 0: + rate = core_hz.pll[0]; break; + case 1: + rate = core_hz.pll[1]; break; + case 2: + rate = core_hz.pll[2]; break; + case 3: + rate = core_hz.pll[3]; break; + case 4: + rate = core_hz.cpu_fclk; break; + case 5: + rate = core_hz.mem_fclk; break; + case 6: + rate = core_hz.bus_bclk; break; + case 7: + rate = core_hz.bus_pclk; break; + case 8: + rate = core_hz.cpu_bclk; break; + case 9: + rate = core_hz.mem_dclk; break; + case 10: + rate = core_hz.mem_bclk; break; + case 11: + rate = core_hz.mem_pclk; break; + case 12: + rate = core_hz.g3d_bclk; break; + case 13: + rate = core_hz.coda_bclk; break; + case 14: + rate = core_hz.coda_pclk; break; +#if defined(CONFIG_ARCH_S5P6818) + case 15: + rate = core_hz.disp_bclk; break; + case 16: + rate = core_hz.disp_pclk; break; + case 17: + rate = core_hz.hdmi_pclk; break; + case 18: + rate = core_hz.cci4_bclk; break; + case 19: + rate = core_hz.cci4_pclk; break; +#endif + default: + printf("unknown core clock type %d ...\n", type); + break; + }; + return rate; +} + +static long core_set_rate(struct clk *clk, long rate) +{ + return clk->rate; +} + +static void core_rate_init(void) +{ + int i; + + for (i = 0; i < CORE_HZ_SIZE; i++) + core_update_rate(i); +} + +/* + * Clock Interfaces + */ +static inline long clk_divide(long rate, long request, + int align, int *divide) +{ + int div = (rate / request); + int max = MAX_DIVIDER & ~(align - 1); + int adv = (div & ~(align - 1)) + align; + long ret; + + if (!div) { + if (divide) + *divide = 1; + return rate; + } + + if (div != 1) + div &= ~(align - 1); + + if (div != adv && abs(request - rate / div) > abs(request - rate / adv)) + div = adv; + + div = (div > max ? max : div); + if (divide) + *divide = div; + + ret = rate / div; + return ret; +} + +void clk_put(struct clk *clk) +{ +} + +struct clk *clk_get(const char *id) +{ + struct clk_dev *cdev = clk_dev_get(0); + struct clk *clk = NULL; + const char *str = NULL, *c = NULL; + int i, devid; + + if (id) + str = id; + + for (i = 0; i < CLK_DEVS_NUM; i++, cdev++) { + if (!cdev->name) + continue; + if (!strncmp(cdev->name, str, strlen(cdev->name))) { + c = strrchr((const char *)str, (int)'.'); + if (!c || !cdev->peri) + break; + devid = simple_strtoul(++c, NULL, 10); + if (cdev->peri->dev_id == devid) + break; + } + } + if (i < CLK_DEVS_NUM) + clk = &cdev->clk; + else + clk = &(clk_dev_get(7))->clk; /* pclk */ + + return clk ? clk : ERR_PTR(-ENOENT); +} + +long clk_round_rate(struct clk *clk, unsigned long rate) +{ + struct clk_dev *pll = NULL, *cdev = clk_container(clk); + struct clk_dev_peri *peri = cdev->peri; + unsigned long request = rate, rate_hz = 0; + unsigned int mask; + int step, div[2] = { 0, }; + int i, n, clk2 = 0; + int start_src = 0, max_src = I_CLOCK_NUM; + short s1 = 0, s2 = 0, d1 = 0, d2 = 0; + + if (!peri) + return core_set_rate(clk, rate); + + step = peri->clk_step; + mask = peri->in_mask; + debug("clk: %s.%d request = %ld [input=0x%x]\n", peri->dev_name, + peri->dev_id, rate, mask); + + if (!(I_CLOCK_MASK & mask)) { + if (I_PCLK_MASK & mask) + return core_get_rate(CORECLK_ID_PCLK); + else if (I_BCLK_MASK & mask) + return core_get_rate(CORECLK_ID_BCLK); + else + return clk->rate; + } + +next: + if (peri->in_mask & I_EXTCLK1_FORCE) { + start_src = 4; max_src = 5; + } + for (n = start_src ; max_src > n; n++) { + if (!(((mask & I_CLOCK_MASK) >> n) & 0x1)) + continue; + + if (n == I_EXT1_BIT) { + rate = peri->in_extclk_1; + } else if (n == I_EXT2_BIT) { + rate = peri->in_extclk_2; + } else { + pll = clk_dev_get(n); + rate = pll->clk.rate; + } + + if (!rate) + continue; + + for (i = 0; step > i ; i++) + rate = clk_divide(rate, request, 2, &div[i]); + + if (rate_hz && (abs(rate - request) > abs(rate_hz - request))) + continue; + + debug("clk: %s.%d, pll.%d[%lu] request[%ld] calc[%ld]\n", + peri->dev_name, peri->dev_id, n, pll->clk.rate, + request, rate); + + if (clk2) { + s1 = -1, d1 = -1; /* not use */ + s2 = n, d2 = div[0]; + } else { + s1 = n, d1 = div[0]; + s2 = I_CLKn_BIT, d2 = div[1]; + } + rate_hz = rate; + } + + /* search 2th clock from input */ + if (!clk2 && abs(rate_hz - request) && + peri->in_mask1 & ((1 << I_CLOCK_NUM) - 1)) { + clk2 = 1; + mask = peri->in_mask1; + step = 1; + goto next; + } + if (peri->in_mask & I_EXTCLK1_FORCE) { + if (s1 == 0) { + s1 = 4; s2 = 7; + d1 = 1; d2 = 1; + } + } + + peri->div_src_0 = s1, peri->div_val_0 = d1; + peri->div_src_1 = s2, peri->div_val_1 = d2; + clk->rate = rate_hz; + + debug("clk: %s.%d, step[%d] src[%d,%d] %ld", peri->dev_name, + peri->dev_id, peri->clk_step, peri->div_src_0, peri->div_src_1, + rate); + debug("/(div0: %d * div1: %d) = %ld, %ld diff (%ld)\n", + peri->div_val_0, peri->div_val_1, rate_hz, request, + abs(rate_hz - request)); + + return clk->rate; +} + +unsigned long clk_get_rate(struct clk *clk) +{ + struct clk_dev *cdev = clk_container(clk); + + if (cdev->link) + clk = cdev->link; + return clk->rate; +} + +int clk_set_rate(struct clk *clk, unsigned long rate) +{ + struct clk_dev *cdev = clk_container(clk); + struct clk_dev_peri *peri = cdev->peri; + int i; + + if (!peri) + return core_set_rate(clk, rate); + + clk_round_rate(clk, rate); + + for (i = 0; peri->clk_step > i ; i++) { + int s = (i == 0 ? peri->div_src_0 : peri->div_src_1); + int d = (i == 0 ? peri->div_val_0 : peri->div_val_1); + + if (-1 == s) + continue; + + clk_dev_rate(peri->base, i, s, d); + + debug("clk: %s.%d (%p) set_rate [%d] src[%d] div[%d]\n", + peri->dev_name, peri->dev_id, peri->base, i, s, d); + } + + return clk->rate; +} + +int clk_enable(struct clk *clk) +{ + struct clk_dev *cdev = clk_container(clk); + struct clk_dev_peri *peri = cdev->peri; + int i = 0, inv = 0; + + if (!peri) + return 0; + + debug("clk: %s.%d enable (BCLK=%s, PCLK=%s)\n", peri->dev_name, + peri->dev_id, I_GATE_BCLK & peri->in_mask ? "ON" : "PASS", + I_GATE_PCLK & peri->in_mask ? "ON" : "PASS"); + + if (!(I_CLOCK_MASK & peri->in_mask)) { + /* Gated BCLK/PCLK enable */ + if (I_GATE_BCLK & peri->in_mask) + clk_dev_bclk(peri->base, 1); + + if (I_GATE_PCLK & peri->in_mask) + clk_dev_pclk(peri->base, 1); + + return 0; + } + + /* invert */ + inv = peri->invert_0; + for (; peri->clk_step > i; i++, inv = peri->invert_1) + clk_dev_inv(peri->base, i, inv); + + /* Gated BCLK/PCLK enable */ + if (I_GATE_BCLK & peri->in_mask) + clk_dev_bclk(peri->base, 1); + + if (I_GATE_PCLK & peri->in_mask) + clk_dev_pclk(peri->base, 1); + + /* restore clock rate */ + for (i = 0; peri->clk_step > i ; i++) { + int s = (i == 0 ? peri->div_src_0 : peri->div_src_1); + int d = (i == 0 ? peri->div_val_0 : peri->div_val_1); + + if (s == -1) + continue; + clk_dev_rate(peri->base, i, s, d); + } + + clk_dev_enb(peri->base, 1); + + return 0; +} + +void clk_disable(struct clk *clk) +{ + struct clk_dev *cdev = clk_container(clk); + struct clk_dev_peri *peri = cdev->peri; + + if (!peri) + return; + + debug("clk: %s.%d disable\n", peri->dev_name, peri->dev_id); + + if (!(I_CLOCK_MASK & peri->in_mask)) { + /* Gated BCLK/PCLK disable */ + if (I_GATE_BCLK & peri->in_mask) + clk_dev_bclk(peri->base, 0); + + if (I_GATE_PCLK & peri->in_mask) + clk_dev_pclk(peri->base, 0); + + return; + } + + clk_dev_rate(peri->base, 0, 7, 256); /* for power save */ + clk_dev_enb(peri->base, 0); + + /* Gated BCLK/PCLK disable */ + if (I_GATE_BCLK & peri->in_mask) + clk_dev_bclk(peri->base, 0); + + if (I_GATE_PCLK & peri->in_mask) + clk_dev_pclk(peri->base, 0); +} + +/* + * Core clocks APIs + */ +void __init clk_init(void) +{ + struct clk_dev *cdev = st_clk_devs; + struct clk_dev_peri *peri = clk_periphs; + struct clk *clk = NULL; + int i = 0; + + memset(cdev, 0, sizeof(st_clk_devs)); + core_rate_init(); + + for (i = 0; (CLK_CORE_NUM + CLK_PERI_NUM) > i; i++, cdev++) { + if (i < CLK_CORE_NUM) { + cdev->name = clk_core[i]; + clk = &cdev->clk; + clk->rate = core_get_rate(i); + continue; + } + + peri = &clk_periphs[i - CLK_CORE_NUM]; + peri->base = (void *)peri->base; + + cdev->peri = peri; + cdev->name = peri->dev_name; + + if (!(I_CLOCK_MASK & peri->in_mask)) { + if (I_BCLK_MASK & peri->in_mask) + cdev->clk.rate = core_get_rate(CORECLK_ID_BCLK); + if (I_PCLK_MASK & peri->in_mask) + cdev->clk.rate = core_get_rate(CORECLK_ID_PCLK); + } + + /* prevent uart clock disable for low step debug message */ + #ifndef CONFIG_DEBUG_NX_UART + if (peri->dev_name) { + #ifdef CONFIG_BACKLIGHT_PWM + if (!strcmp(peri->dev_name, DEV_NAME_PWM)) + continue; + #endif + } + #endif + } + debug("CPU : Clock Generator= %d EA, ", CLK_DEVS_NUM); +} diff --git a/arch/arm/mach-nexell/cmd_boot_linux.c b/arch/arm/mach-nexell/cmd_boot_linux.c new file mode 100644 index 0000000..f9d2a5c --- /dev/null +++ b/arch/arm/mach-nexell/cmd_boot_linux.c @@ -0,0 +1,145 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 nexell + * jhkim jhkim@nexell.co.kr + */ + +#include <common.h> +#include <bootm.h> +#include <command.h> +#include <environment.h> +#include <errno.h> +#include <image.h> +#include <fdt_support.h> + +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_CLI_FRAMEWORK) + +DECLARE_GLOBAL_DATA_PTR; + +static bootm_headers_t linux_images; + +static void boot_go_set_os(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[], + bootm_headers_t *images) +{ + char * const img_addr = argv[0]; + + images->os.type = IH_TYPE_KERNEL; + images->os.comp = IH_COMP_NONE; + images->os.os = IH_OS_LINUX; + images->os.load = simple_strtoul(img_addr, NULL, 16); + images->ep = images->os.load; +#if defined(CONFIG_ARM) + images->os.arch = IH_ARCH_ARM; +#elif defined(CONFIG_ARM64) + images->os.arch = IH_ARCH_ARM64; +#else + #error "Not support architecture ..." +#endif + +#if !defined(CONFIG_OF_LIBFDT) && !defined(CONFIG_SPL_BUILD) + /* set DTB address for linux kernel */ + if (argc > 2) { + unsigned long ft_addr; + + ft_addr = simple_strtol(argv[2], NULL, 16); + images->ft_addr = (char *)ft_addr; + + /* + * if not defined IMAGE_ENABLE_OF_LIBFDT, + * must be set to fdt address + */ + if (!IMAGE_ENABLE_OF_LIBFDT) + gd->bd->bi_boot_params = ft_addr; + + debug("## set ft:%08lx and boot params:%08lx [control of:%s]" + "...\n", ft_addr, gd->bd->bi_boot_params, + IMAGE_ENABLE_OF_LIBFDT ? "on" : "off"); + } +#endif +} + +#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB) +static void boot_start_lmb(bootm_headers_t *images) +{ + ulong mem_start; + phys_size_t mem_size; + + lmb_init(&images->lmb); + + mem_start = getenv_bootm_low(); + mem_size = getenv_bootm_size(); + + lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size); + + arch_lmb_reserve(&images->lmb); + board_lmb_reserve(&images->lmb); +} +#else +#define lmb_reserve(lmb, base, size) +static inline void boot_start_lmb(bootm_headers_t *images) { } +#endif + +int do_boot_linux(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + boot_os_fn *boot_fn; + bootm_headers_t *images = &linux_images; + int flags; + int ret; + + boot_start_lmb(images); + + flags = BOOTM_STATE_START; + + argc--; argv++; + boot_go_set_os(cmdtp, flag, argc, argv, images); + +#if defined(CONFIG_OF_LIBFDT) + /* find flattened device tree */ + ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, images, + &images->ft_addr, &images->ft_len); + if (ret) { + puts("Could not find a valid device tree\n"); + return 1; + } + set_working_fdt_addr((ulong)images->ft_addr); +#endif +#if !defined(CONFIG_OF_LIBFDT) + flags |= BOOTM_STATE_OS_GO; +#endif + + boot_fn = do_bootm_linux; + ret = boot_fn(flags, argc, argv, images); + + if (ret == BOOTM_ERR_UNIMPLEMENTED) + show_boot_progress(BOOTSTAGE_ID_DECOMP_UNIMPL); + else if (ret == BOOTM_ERR_RESET) + do_reset(cmdtp, flag, argc, argv); + + return ret; +} + +U_BOOT_CMD(bootl, CONFIG_SYS_MAXARGS, 1, do_boot_linux, + "boot linux image from memory", + "[addr [arg ...]]\n - boot linux image stored in memory\n" + "\tuse a '-' for the DTB address\n" +); +#endif + +#if defined(CONFIG_CMD_BOOTD) && !defined(CONFIG_CMD_BOOTM) +int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + return run_command(env_get("bootcmd"), flag); +} + +U_BOOT_CMD(boot, 1, 1, do_bootd, + "boot default, i.e., run 'bootcmd'", + "" +); + +/* keep old command name "bootd" for backward compatibility */ +U_BOOT_CMD(bootd, 1, 1, do_bootd, + "boot default, i.e., run 'bootcmd'", + "" +); +#endif diff --git a/arch/arm/mach-nexell/config.mk b/arch/arm/mach-nexell/config.mk new file mode 100644 index 0000000..7b06626 --- /dev/null +++ b/arch/arm/mach-nexell/config.mk @@ -0,0 +1,11 @@ +# +# (C) Copyright 2016 Nexell +# junghyun kimjhkim@nexell.co.kr +# +# SPDX-License-Identifier: GPL-2.0+ +# + +SOCDIR=CPUDIR/$(VENDOR) +MACHDIR=$(patsubst %,arch/arm/mach-%,$(machine-y)) + +LDPPFLAGS += -DMACHDIR=$(MACHDIR) -DSOCDIR=$(SOCDIR) diff --git a/arch/arm/mach-nexell/nx_gpio.c b/arch/arm/mach-nexell/nx_gpio.c new file mode 100644 index 0000000..dfba3a2 --- /dev/null +++ b/arch/arm/mach-nexell/nx_gpio.c @@ -0,0 +1,352 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 Nexell + * Youngbok, Park ybpark@nexell.co.kr + */ + +/* + * FIXME : will be remove after support pinctrl + */ +#include <linux/types.h> +#include <asm/io.h> +#include <asm/arch/nexell.h> +#include "asm/arch/nx_gpio.h" +#define NUMBER_OF_GPIO_MODULE 5 +u32 __g_nx_gpio_valid_bit[NUMBER_OF_GPIO_MODULE] = { + 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}; + +static struct { + struct nx_gpio_register_set *pregister; +} __g_module_variables[NUMBER_OF_GPIO_MODULE] = { + { (struct nx_gpio_register_set *)PHY_BASEADDR_GPIOA }, + { (struct nx_gpio_register_set *)PHY_BASEADDR_GPIOB }, + { (struct nx_gpio_register_set *)PHY_BASEADDR_GPIOC }, + { (struct nx_gpio_register_set *)PHY_BASEADDR_GPIOD }, + { (struct nx_gpio_register_set *)PHY_BASEADDR_GPIOE }, +}; + +enum { nx_gpio_max_bit = 32 }; + +void nx_gpio_set_bit(u32 *value, u32 bit, int enable) +{ + register u32 newvalue; + + newvalue = *value; + newvalue &= ~(1ul << bit); + newvalue |= (u32)enable << bit; + writel(newvalue, value); +} + +int nx_gpio_get_bit(u32 value, u32 bit) +{ + return (int)((value >> bit) & (1ul)); +} + +void nx_gpio_set_bit2(u32 *value, u32 bit, u32 bit_value) +{ + register u32 newvalue = *value; + + newvalue = (u32)(newvalue & ~(3ul << (bit * 2))); + newvalue = (u32)(newvalue | (bit_value << (bit * 2))); + + writel(newvalue, value); +} + +u32 nx_gpio_get_bit2(u32 value, u32 bit) +{ + return (u32)((u32)(value >> (bit * 2)) & 3ul); +} + +int nx_gpio_initialize(void) +{ + static int binit; + u32 i; + + binit = 0; + + if (binit == 0) { + for (i = 0; i < NUMBER_OF_GPIO_MODULE; i++) + __g_module_variables[i].pregister = NULL; + binit = true; + } + for (i = 0; i < NUMBER_OF_GPIO_MODULE; i++) { + __g_nx_gpio_valid_bit[i] = 0xFFFFFFFF; + }; + return true; +} + +u32 nx_gpio_get_number_of_module(void) +{ + return NUMBER_OF_GPIO_MODULE; +} + +u32 nx_gpio_get_size_of_register_set(void) +{ + return sizeof(struct nx_gpio_register_set); +} + +void nx_gpio_set_base_address(u32 module_index, void *base_address) +{ + __g_module_variables[module_index].pregister = + (struct nx_gpio_register_set *)base_address; +} + +void *nx_gpio_get_base_address(u32 module_index) +{ + return (void *)__g_module_variables[module_index].pregister; +} + +int nx_gpio_open_module(u32 module_index) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + writel(0xFFFFFFFF, &pregister->gpiox_slew_disable_default); + writel(0xFFFFFFFF, &pregister->gpiox_drv1_disable_default); + writel(0xFFFFFFFF, &pregister->gpiox_drv0_disable_default); + writel(0xFFFFFFFF, &pregister->gpiox_pullsel_disable_default); + writel(0xFFFFFFFF, &pregister->gpiox_pullenb_disable_default); + return true; +} + +int nx_gpio_close_module(u32 module_index) { return true; } + +int nx_gpio_check_busy(u32 module_index) { return false; } + +void nx_gpio_set_pad_function(u32 module_index, u32 bit_number, + u32 padfunc) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + nx_gpio_set_bit2(&pregister->gpioxaltfn[bit_number / 16], + bit_number % 16, padfunc); +} + +void nx_gpio_set_pad_function32(u32 module_index, u32 msbvalue, u32 lsbvalue) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + writel(lsbvalue, &pregister->gpioxaltfn[0]); + writel(msbvalue, &pregister->gpioxaltfn[1]); +} + +int nx_gpio_get_pad_function(u32 module_index, u32 bit_number) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + return (int)nx_gpio_get_bit2 + (readl(&pregister->gpioxaltfn[bit_number / 16]), + bit_number % 16); +} + +void nx_gpio_set_output_enable(u32 module_index, u32 bit_number, + int output_enb) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + nx_gpio_set_bit(&pregister->gpioxoutenb, bit_number, output_enb); +} + +int nx_gpio_get_detect_enable(u32 module_index, u32 bit_number) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + return nx_gpio_get_bit(readl(&pregister->gpioxdetenb), bit_number); +} + +u32 nx_gpio_get_detect_enable32(u32 module_index) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + return readl(&pregister->gpioxdetenb); +} + +void nx_gpio_set_detect_enable(u32 module_index, u32 bit_number, + int detect_enb) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + nx_gpio_set_bit(&pregister->gpioxdetenb, bit_number, detect_enb); +} + +void nx_gpio_set_detect_enable32(u32 module_index, u32 enable_flag) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + writel(enable_flag, &pregister->gpioxdetenb); +} + +int nx_gpio_get_output_enable(u32 module_index, u32 bit_number) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + return nx_gpio_get_bit(readl(&pregister->gpioxoutenb), bit_number); +} + +void nx_gpio_set_output_enable32(u32 module_index, int output_enb) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + if (output_enb) + writel(0xFFFFFFFF, &pregister->gpioxoutenb); + else + writel(0x0, &pregister->gpioxoutenb); +} + +u32 nx_gpio_get_output_enable32(u32 module_index) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + return readl(&pregister->gpioxoutenb); +} + +void nx_gpio_set_output_value(u32 module_index, u32 bit_number, int value) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + nx_gpio_set_bit(&pregister->gpioxout, bit_number, value); +} + +int nx_gpio_get_output_value(u32 module_index, u32 bit_number) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + return nx_gpio_get_bit(readl(&pregister->gpioxout), bit_number); +} + +void nx_gpio_set_output_value32(u32 module_index, u32 value) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + writel(value, &pregister->gpioxout); +} + +u32 nx_gpio_get_output_value32(u32 module_index) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + return readl(&pregister->gpioxout); +} + +int nx_gpio_get_input_value(u32 module_index, u32 bit_number) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + return nx_gpio_get_bit(readl(&pregister->gpioxpad), bit_number); +} + +void nx_gpio_set_pull_select(u32 module_index, u32 bit_number, int enable) +{ + nx_gpio_set_bit(&__g_module_variables[module_index] + .pregister->gpiox_pullsel_disable_default, + bit_number, true); + nx_gpio_set_bit + (&__g_module_variables[module_index].pregister->gpiox_pullsel, + bit_number, enable); +} + +void nx_gpio_set_pull_select32(u32 module_index, u32 value) +{ + writel(value, + &__g_module_variables[module_index].pregister->gpiox_pullsel); +} + +int nx_gpio_get_pull_select(u32 module_index, u32 bit_number) +{ + return nx_gpio_get_bit + (__g_module_variables[module_index].pregister->gpiox_pullsel, + bit_number); +} + +u32 nx_gpio_get_pull_select32(u32 module_index) +{ + return __g_module_variables[module_index].pregister->gpiox_pullsel; +} + +void nx_gpio_set_pull_mode(u32 module_index, u32 bit_number, u32 mode) +{ + nx_gpio_set_bit(&__g_module_variables[module_index] + .pregister->gpiox_pullsel_disable_default, + bit_number, true); + nx_gpio_set_bit(&__g_module_variables[module_index] + .pregister->gpiox_pullenb_disable_default, + bit_number, true); + if (mode == nx_gpio_pull_off) { + nx_gpio_set_bit + (&__g_module_variables[module_index].pregister->gpiox_pullenb, + bit_number, false); + nx_gpio_set_bit + (&__g_module_variables[module_index].pregister->gpiox_pullsel, + bit_number, false); + } else { + nx_gpio_set_bit + (&__g_module_variables[module_index].pregister->gpiox_pullsel, + bit_number, (mode & 1 ? true : false)); + nx_gpio_set_bit + (&__g_module_variables[module_index].pregister->gpiox_pullenb, + bit_number, true); + } +} + +void nx_gpio_set_fast_slew(u32 module_index, u32 bit_number, + int enable) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + nx_gpio_set_bit(&pregister->gpiox_slew, bit_number, + (int)(!enable)); +} + +void nx_gpio_set_drive_strength(u32 module_index, u32 bit_number, + u32 drvstrength) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + nx_gpio_set_bit(&pregister->gpiox_drv1, bit_number, + (int)(((u32)drvstrength >> 0) & 0x1)); + nx_gpio_set_bit(&pregister->gpiox_drv0, bit_number, + (int)(((u32)drvstrength >> 1) & 0x1)); +} + +void nx_gpio_set_drive_strength_disable_default(u32 module_index, + u32 bit_number, int enable) +{ + register struct nx_gpio_register_set *pregister; + + pregister = __g_module_variables[module_index].pregister; + nx_gpio_set_bit(&pregister->gpiox_drv1_disable_default, bit_number, + (int)(enable)); + nx_gpio_set_bit(&pregister->gpiox_drv0_disable_default, bit_number, + (int)(enable)); +} + +u32 nx_gpio_get_drive_strength(u32 module_index, u32 bit_number) +{ + register struct nx_gpio_register_set *pregister; + register u32 retvalue; + + pregister = __g_module_variables[module_index].pregister; + retvalue = + nx_gpio_get_bit(readl(&pregister->gpiox_drv0), bit_number) << 1; + retvalue |= + nx_gpio_get_bit(readl(&pregister->gpiox_drv1), bit_number) << 0; + return retvalue; +} diff --git a/arch/arm/mach-nexell/nx_sec_reg.c b/arch/arm/mach-nexell/nx_sec_reg.c new file mode 100644 index 0000000..3d3dd9f --- /dev/null +++ b/arch/arm/mach-nexell/nx_sec_reg.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 Nexell + * Youngbok, Park park@nexell.co.kr + */ + +#include <linux/types.h> +#include <asm/io.h> +#include <asm/arch/nexell.h> +#include <asm/arch/sec_reg.h> +#include <linux/linkage.h> + +#define NEXELL_SMC_BASE 0x82000000 + +#define NEXELL_SMC_FN(n) (NEXELL_SMC_BASE + (n)) + +#define NEXELL_SMC_SEC_REG_WRITE NEXELL_SMC_FN(0x0) +#define NEXELL_SMC_SEC_REG_READ NEXELL_SMC_FN(0x1) + +#define SECURE_ID_SHIFT 8 + +#define SEC_4K_OFFSET ((4 * 1024) - 1) +#define SEC_64K_OFFSET ((64 * 1024) - 1) + +asmlinkage int __invoke_nexell_fn_smc(u32, u32, u32, u32); + +int write_sec_reg_by_id(void __iomem *reg, int val, int id) +{ + int ret = 0; + u32 off = 0; + + switch (id) { + case NEXELL_L2C_SEC_ID: + case NEXELL_MIPI_SEC_ID: + case NEXELL_TOFF_SEC_ID: + off = (u32)reg & SEC_4K_OFFSET; + break; + case NEXELL_MALI_SEC_ID: + off = (u32)reg & SEC_64K_OFFSET; + break; + } + ret = __invoke_nexell_fn_smc(NEXELL_SMC_SEC_REG_WRITE | + ((1 << SECURE_ID_SHIFT) + id), off, val, 0); + return ret; +} + +int read_sec_reg_by_id(void __iomem *reg, int id) +{ + int ret = 0; + u32 off = 0; + + switch (id) { + case NEXELL_L2C_SEC_ID: + case NEXELL_MIPI_SEC_ID: + case NEXELL_TOFF_SEC_ID: + off = (u32)reg & SEC_4K_OFFSET; + break; + case NEXELL_MALI_SEC_ID: + off = (u32)reg & SEC_64K_OFFSET; + break; + } + ret = __invoke_nexell_fn_smc(NEXELL_SMC_SEC_REG_READ | + ((1 << SECURE_ID_SHIFT) + id), off, 0, 0); + return ret; +} + +int write_sec_reg(void __iomem *reg, int val) +{ + int ret = 0; + + ret = __invoke_nexell_fn_smc(NEXELL_SMC_SEC_REG_WRITE, + (u32)reg, val, 0); + return ret; +} + +int read_sec_reg(void __iomem *reg) +{ + int ret = 0; + + ret = __invoke_nexell_fn_smc(NEXELL_SMC_SEC_REG_READ, (u32)reg, 0, 0); + return ret; +} diff --git a/arch/arm/mach-nexell/reg-call.S b/arch/arm/mach-nexell/reg-call.S new file mode 100644 index 0000000..5fdf515 --- /dev/null +++ b/arch/arm/mach-nexell/reg-call.S @@ -0,0 +1,23 @@ +#include <asm-offsets.h> +#include <config.h> +#include <linux/linkage.h> + +#define ___asm_opcode_identity32(x) ((x) & 0xFFFFFFFF) +#define __opcode_to_mem_arm(x) ___opcode_identity32(x) +#define ___asm_opcode_to_mem_arm(x) ___asm_opcode_identity32(x) + +#define ___opcode_identity32(x) ((u32)(x)) +#define ___inst_arm(x) .long x +#define __inst_arm(x) ___inst_arm(___asm_opcode_to_mem_arm(x)) + +#define __inst_arm_thumb32(arm_opcode, thumb_opcode) __inst_arm(arm_opcode) + +#define __SMC(imm4) __inst_arm_thumb32( \ + 0xE1600070 | (((imm4) & 0xF) << 0), \ + 0xF7F08000 | (((imm4) & 0xF) << 16) \ +) + +ENTRY(__invoke_nexell_fn_smc) + __SMC(0) + bx lr +ENDPROC(__invoke_nexell_fn_smc) diff --git a/arch/arm/mach-nexell/reset.c b/arch/arm/mach-nexell/reset.c new file mode 100644 index 0000000..1f732a3 --- /dev/null +++ b/arch/arm/mach-nexell/reset.c @@ -0,0 +1,33 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 Nexell + * Youngbok, Park park@nexell.co.kr + */ + +/* + *FIXME : Not support device tree & reset control driver. + * will remove after support device tree & reset control driver. + */ +#include <common.h> +#include <asm/io.h> +#include <asm/arch/nexell.h> +#include <asm/arch/reset.h> + +struct nx_rstcon_registerset { + u32 regrst[(NUMBER_OF_RESET_MODULE_PIN + 31) >> 5]; +}; + +static struct nx_rstcon_registerset *nx_rstcon = + (struct nx_rstcon_registerset *)PHY_BASEADDR_RSTCON; + +void nx_rstcon_setrst(u32 rstindex, enum rstcon status) +{ + u32 regnum, bitpos, curstat; + + regnum = rstindex >> 5; + curstat = (u32)readl(&nx_rstcon->regrst[regnum]); + bitpos = rstindex & 0x1f; + curstat &= ~(1UL << bitpos); + curstat |= (status & 0x01) << bitpos; + writel(curstat, &nx_rstcon->regrst[regnum]); +} diff --git a/arch/arm/mach-nexell/serial.c b/arch/arm/mach-nexell/serial.c new file mode 100644 index 0000000..c137922 --- /dev/null +++ b/arch/arm/mach-nexell/serial.c @@ -0,0 +1,262 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 Nexell + * Hyunseok, Jung hsjung@nexell.co.kr + */ + +#include <common.h> +#include <linux/compiler.h> +#include <asm/io.h> +#include <asm/arch/clk.h> +#include <serial.h> +#include <asm/arch/nexell.h> +#include <asm/arch/clk.h> + +/* baudrate rest value */ +union br_rest { + unsigned short slot; /* udivslot */ + unsigned char value; /* ufracval */ +}; + +struct s5p_uart { + unsigned int ulcon; + unsigned int ucon; + unsigned int ufcon; + unsigned int umcon; + unsigned int utrstat; + unsigned int uerstat; + unsigned int ufstat; + unsigned int umstat; + unsigned char utxh; + unsigned char res1[3]; + unsigned char urxh; + unsigned char res2[3]; + unsigned int ubrdiv; + union br_rest rest; + unsigned char res3[0x3d0]; +}; + +static inline int s5p_uart_divslot(void) +{ + return 1; +} + +DECLARE_GLOBAL_DATA_PTR; + +#define CONSOLE_PORT CONFIG_S5P_SERIAL_INDEX +#if (0 == CONSOLE_PORT) +#define CONFIG_S5P_SERIAL_PORT (void *)PHY_BASEADDR_UART0 +#elif (1 == CONSOLE_PORT) +#define CONFIG_S5P_SERIAL_PORT (void *)PHY_BASEADDR_UART1 +#elif (2 == CONSOLE_PORT) +#define CONFIG_S5P_SERIAL_PORT (void *)PHY_BASEADDR_UART2 +#elif (3 == CONSOLE_PORT) +#define CONFIG_S5P_SERIAL_PORT (void *)PHY_BASEADDR_UART3 +#elif (4 == CONSOLE_PORT) +#define CONFIG_S5P_SERIAL_PORT (void *)PHY_BASEADDR_UART4 +#elif (5 == CONSOLE_PORT) +#define CONFIG_S5P_SERIAL_PORT (void *)PHY_BASEADDR_UART5 +#endif +static unsigned char *const port = CONFIG_S5P_SERIAL_PORT; +static unsigned int const clock_in = CONFIG_S5P_SERIAL_CLOCK; + +#define RX_FIFO_COUNT_MASK 0xff +#define RX_FIFO_FULL_MASK (1 << 8) +#define TX_FIFO_FULL_MASK (1 << 24) + +static void __serial_device_init(void) +{ + char dev[10]; + + sprintf(dev, "nx-uart.%d", CONFIG_S5P_SERIAL_INDEX); + + struct clk *clk = clk_get((const char *)dev); + + /* set clock */ + clk_disable(clk); + clk_set_rate(clk, CONFIG_UART_CLKGEN_CLOCK_HZ); + clk_enable(clk); +} + +void serial_device_init(void) + __attribute__((weak, alias("__serial_device_init"))); + +static inline struct s5p_uart *s5p_get_base_uart(int dev_index) +{ + return (struct s5p_uart *)port; +} + +/* + * The coefficient, used to calculate the baudrate on S5P UARTs is + * calculated as + * C = UBRDIV * 16 + number_of_set_bits_in_UDIVSLOT + * however, section 31.6.11 of the datasheet doesn't recomment using 1 for 1, + * 3 for 2, ... (2^n - 1) for n, instead, they suggest using these constants: + */ +static const int udivslot[] = { + 0, + 0x0080, + 0x0808, + 0x0888, + 0x2222, + 0x4924, + 0x4a52, + 0x54aa, + 0x5555, + 0xd555, + 0xd5d5, + 0xddd5, + 0xdddd, + 0xdfdd, + 0xdfdf, + 0xffdf, +}; + +static void serial_setbrg_dev(const int dev_index) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + u32 uclk = clock_in; + u32 baudrate = gd->baudrate; + u32 val; + + val = uclk / baudrate; + + writel(val / 16 - 1, &uart->ubrdiv); + + if (s5p_uart_divslot()) + writew(udivslot[val % 16], &uart->rest.slot); + else + writeb(val % 16, &uart->rest.value); +} + +/* + * Initialise the serial port with the given baudrate. The settings + * are always 8 data bits, no parity, 1 stop bit, no start bits. + */ +static int serial_init_dev(const int dev_index) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + + serial_device_init(); + + /* enable FIFOs, auto clear Rx FIFO */ + writel(0x3, &uart->ufcon); + writel(0, &uart->umcon); + /* 8N1 */ + writel(0x3, &uart->ulcon); + /* No interrupts, no DMA, pure polling */ + writel(0x245, &uart->ucon); + + serial_setbrg_dev(dev_index); + + return 0; +} + +static int serial_err_check(const int dev_index, int op) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + unsigned int mask; + + /* + * UERSTAT + * Break Detect [3] + * Frame Err [2] : receive operation + * Parity Err [1] : receive operation + * Overrun Err [0] : receive operation + */ + if (op) + mask = 0x8; + else + mask = 0xf; + + return readl(&uart->uerstat) & mask; +} + +/* + * Read a single byte from the serial port. Returns 1 on success, 0 + * otherwise. When the function is succesfull, the character read is + * written into its argument c. + */ +static int serial_getc_dev(const int dev_index) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + + /* wait for character to arrive */ + while (!(readl(&uart->ufstat) & (RX_FIFO_COUNT_MASK | + RX_FIFO_FULL_MASK))) { + if (serial_err_check(dev_index, 0)) + return 0; + } + + return (int)(readb(&uart->urxh) & 0xff); +} + +/* + * Output a single byte to the serial port. + */ +static void serial_putc_dev(const char c, const int dev_index) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + + /* wait for room in the tx FIFO */ + while ((readl(&uart->ufstat) & TX_FIFO_FULL_MASK)) { + if (serial_err_check(dev_index, 1)) + return; + } + + writeb(c, &uart->utxh); + + /* If \n, also do \r */ + if (c == '\n') + serial_putc('\r'); +} + +/* + * Test whether a character is in the RX buffer + */ +static int serial_tstc_dev(const int dev_index) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + + return (int)(readl(&uart->utrstat) & 0x1); +} + +static void serial_puts_dev(const char *s, const int dev_index) +{ + while (*s) + serial_putc_dev(*s++, dev_index); +} + +static int s5p_serial_init(void) +{ return serial_init_dev(CONSOLE_PORT); } +static void s5p_serial_setbrg(void) +{ serial_setbrg_dev(CONSOLE_PORT); } +static int s5p_serial_getc(void) +{ return serial_getc_dev(CONSOLE_PORT); } +static int s5p_serial_tstc(void) +{ return serial_tstc_dev(CONSOLE_PORT); } +static void s5p_serial_putc(const char c) +{ serial_putc_dev(c, CONSOLE_PORT); } +static void s5p_serial_puts(const char *s) +{ serial_puts_dev(s, CONSOLE_PORT); } + +static struct serial_device s5p_serial_device = { + .name = "serial_s5p", + .start = s5p_serial_init, + .stop = NULL, + .setbrg = s5p_serial_setbrg, + .getc = s5p_serial_getc, + .tstc = s5p_serial_tstc, + .putc = s5p_serial_putc, + .puts = s5p_serial_puts, +}; + +__weak struct serial_device *default_serial_console(void) +{ + return &s5p_serial_device; +} + +void s5p_serial_initialize(void) +{ + serial_register(&s5p_serial_device); +} diff --git a/arch/arm/mach-nexell/tieoff.c b/arch/arm/mach-nexell/tieoff.c new file mode 100644 index 0000000..9a89517 --- /dev/null +++ b/arch/arm/mach-nexell/tieoff.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 Nexell + * Youngbok, Park park@nexell.co.kr + */ + +#include <common.h> +#include <asm/arch/nexell.h> +#include <asm/arch/clk.h> +#include <asm/arch/reset.h> +#include <asm/arch/nx_gpio.h> +#include <asm/arch/tieoff.h> +#include <asm/arch/sec_reg.h> + +#define NX_PIN_FN_SIZE 4 +#define TIEOFF_REG_NUM 33 + +struct nx_tieoff_registerset { + u32 tieoffreg[TIEOFF_REG_NUM]; +}; + +static struct nx_tieoff_registerset *nx_tieoff = (void *)PHY_BASEADDR_TIEOFF; + +static int tieoff_readl(void __iomem *reg) +{ +#ifdef CONFIG_ARCH_S5P4418 + return read_sec_reg_by_id(reg, NEXELL_TOFF_SEC_ID); +#else + return readl(reg); +#endif +} + +static int tieoff_writetl(void __iomem *reg, int val) +{ +#ifdef CONFIG_ARCH_S5P4418 + return write_sec_reg_by_id(reg, val, NEXELL_TOFF_SEC_ID); +#else + return writel(val, reg); +#endif +} + +void nx_tieoff_set(u32 tieoff_index, u32 tieoff_value) +{ + u32 regindex, mask; + u32 lsb, msb; + u32 regval; + + u32 position; + u32 bitwidth; + + position = tieoff_index & 0xffff; + bitwidth = (tieoff_index >> 16) & 0xffff; + + regindex = position >> 5; + + lsb = position & 0x1F; + msb = lsb + bitwidth; + + if (msb > 32) { + msb &= 0x1F; + mask = ~(0xffffffff << lsb); + regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; + regval |= ((tieoff_value & ((1UL << bitwidth) - 1)) << lsb); + tieoff_writetl(&nx_tieoff->tieoffreg[regindex], regval); + + mask = (0xffffffff << msb); + regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; + regval |= ((tieoff_value & ((1UL << bitwidth) - 1)) >> msb); + tieoff_writetl(&nx_tieoff->tieoffreg[regindex + 1], regval); + } else { + mask = (0xffffffff << msb) | (~(0xffffffff << lsb)); + regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; + regval |= ((tieoff_value & ((1UL << bitwidth) - 1)) << lsb); + tieoff_writetl(&nx_tieoff->tieoffreg[regindex], regval); + } +} + +u32 nx_tieoff_get(u32 tieoff_index) +{ + u32 regindex, mask; + u32 lsb, msb; + u32 regval; + + u32 position; + u32 bitwidth; + + position = tieoff_index & 0xffff; + bitwidth = (tieoff_index >> 16) & 0xffff; + + regindex = position / 32; + lsb = position % 32; + msb = lsb + bitwidth; + + if (msb > 32) { + msb &= 0x1F; + mask = 0xffffffff << lsb; + regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; + regval >>= lsb; + + mask = ~(0xffffffff << msb); + regval |= ((tieoff_readl(&nx_tieoff->tieoffreg[regindex + 1]) + & mask) << (32 - lsb)); + } else { + mask = ~(0xffffffff << msb) & (0xffffffff << lsb); + regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; + regval >>= lsb; + } + return regval; +} diff --git a/arch/arm/mach-nexell/timer.c b/arch/arm/mach-nexell/timer.c new file mode 100644 index 0000000..f915684 --- /dev/null +++ b/arch/arm/mach-nexell/timer.c @@ -0,0 +1,297 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 Nexell + * Hyunseok, Jung hsjung@nexell.co.kr + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/nexell.h> +#include <asm/arch/clk.h> +#if defined(CONFIG_ARCH_S5P4418) +#include <asm/arch/reset.h> +#endif + +#if (CONFIG_TIMER_SYS_TICK_CH > 3) +#error Not support timer channel. Please use "0~3" channels. +#endif + +/* global variables to save timer count + * + * Section ".data" must be used because BSS is not available before relocation, + * in board_init_f(), respectively! I.e. global variables can not be used! + */ +static unsigned long timestamp __attribute__ ((section(".data"))); +static unsigned long lastdec __attribute__ ((section(".data"))); +static int timerinit __attribute__ ((section(".data"))); + +/* macro to hw timer tick config */ +static long TIMER_FREQ = 1000000; +static long TIMER_HZ = 1000000 / CONFIG_SYS_HZ; +static long TIMER_COUNT = 0xFFFFFFFF; + +#define REG_TCFG0 (0x00) +#define REG_TCFG1 (0x04) +#define REG_TCON (0x08) +#define REG_TCNTB0 (0x0C) +#define REG_TCMPB0 (0x10) +#define REG_TCNT0 (0x14) +#define REG_CSTAT (0x44) + +#define TCON_BIT_AUTO (1 << 3) +#define TCON_BIT_INVT (1 << 2) +#define TCON_BIT_UP (1 << 1) +#define TCON_BIT_RUN (1 << 0) +#define TCFG0_BIT_CH(ch) ((ch) == 0 || (ch) == 1 ? 0 : 8) +#define TCFG1_BIT_CH(ch) ((ch) * 4) +#define TCON_BIT_CH(ch) ((ch) ? (ch) * 4 + 4 : 0) +#define TINT_CH(ch) (ch) +#define TINT_CSTAT_BIT_CH(ch) ((ch) + 5) +#define TINT_CSTAT_MASK (0x1F) +#define TIMER_TCNT_OFFS (0xC) + +void reset_timer_masked(void); +unsigned long get_timer_masked(void); + +/* + * Timer HW + */ +static inline void timer_clock(void __iomem *base, int ch, int mux, int scl) +{ + u32 val = readl(base + REG_TCFG0) & ~(0xFF << TCFG0_BIT_CH(ch)); + + writel(val | ((scl - 1) << TCFG0_BIT_CH(ch)), base + REG_TCFG0); + val = readl(base + REG_TCFG1) & ~(0xF << TCFG1_BIT_CH(ch)); + writel(val | (mux << TCFG1_BIT_CH(ch)), base + REG_TCFG1); +} + +static inline void timer_count(void __iomem *base, int ch, unsigned int cnt) +{ + writel((cnt - 1), base + REG_TCNTB0 + (TIMER_TCNT_OFFS * ch)); + writel((cnt - 1), base + REG_TCMPB0 + (TIMER_TCNT_OFFS * ch)); +} + +static inline void timer_start(void __iomem *base, int ch) +{ + int on = 0; + u32 val = readl(base + REG_CSTAT) & ~(TINT_CSTAT_MASK << 5 | 0x1 << ch); + + writel(val | (0x1 << TINT_CSTAT_BIT_CH(ch) | on << ch), + base + REG_CSTAT); + val = readl(base + REG_TCON) & ~(0xE << TCON_BIT_CH(ch)); + writel(val | (TCON_BIT_UP << TCON_BIT_CH(ch)), base + REG_TCON); + + val &= ~(TCON_BIT_UP << TCON_BIT_CH(ch)); + val |= ((TCON_BIT_AUTO | TCON_BIT_RUN) << TCON_BIT_CH(ch)); + writel(val, base + REG_TCON); + dmb(); +} + +static inline void timer_stop(void __iomem *base, int ch) +{ + int on = 0; + u32 val = readl(base + REG_CSTAT) & ~(TINT_CSTAT_MASK << 5 | 0x1 << ch); + + writel(val | (0x1 << TINT_CSTAT_BIT_CH(ch) | on << ch), + base + REG_CSTAT); + val = readl(base + REG_TCON) & ~(TCON_BIT_RUN << TCON_BIT_CH(ch)); + writel(val, base + REG_TCON); +} + +static inline unsigned long timer_read(void __iomem *base, int ch) +{ + unsigned long ret; + + ret = TIMER_COUNT - readl(base + REG_TCNT0 + (TIMER_TCNT_OFFS * ch)); + return ret; +} + +int timer_init(void) +{ + struct clk *clk = NULL; + char name[16] = "pclk"; + int ch = CONFIG_TIMER_SYS_TICK_CH; + unsigned long rate, tclk = 0; + unsigned long mout, thz, cmp = -1UL; + int tcnt, tscl = 0, tmux = 0; + int mux = 0, scl = 0; + void __iomem *base = (void __iomem *)PHY_BASEADDR_TIMER; + + if (timerinit) + return 0; + + /* get with PCLK */ + clk = clk_get(name); + rate = clk_get_rate(clk); + for (mux = 0; mux < 5; mux++) { + mout = rate / (1 << mux), scl = mout / TIMER_FREQ, + thz = mout / scl; + if (!(mout % TIMER_FREQ) && 256 > scl) { + tclk = thz, tmux = mux, tscl = scl; + break; + } + if (scl > 256) + continue; + if (abs(thz - TIMER_FREQ) >= cmp) + continue; + tclk = thz, tmux = mux, tscl = scl; + cmp = abs(thz - TIMER_FREQ); + } + tcnt = tclk; /* Timer Count := 1 Mhz counting */ + + TIMER_FREQ = tcnt; /* Timer Count := 1 Mhz counting */ + TIMER_HZ = TIMER_FREQ / CONFIG_SYS_HZ; + tcnt = TIMER_COUNT == 0xFFFFFFFF ? TIMER_COUNT + 1 : tcnt; + + timer_stop(base, ch); + timer_clock(base, ch, tmux, tscl); + timer_count(base, ch, tcnt); + timer_start(base, ch); + + reset_timer_masked(); + timerinit = 1; + + return 0; +} + +void reset_timer(void) +{ + reset_timer_masked(); +} + +unsigned long get_timer(unsigned long base) +{ + long ret; + unsigned long time = get_timer_masked(); + unsigned long hz = TIMER_HZ; + + ret = time / hz - base; + return ret; +} + +void set_timer(unsigned long t) +{ + timestamp = (unsigned long)t; +} + +void reset_timer_masked(void) +{ + void __iomem *base = (void __iomem *)PHY_BASEADDR_TIMER; + int ch = CONFIG_TIMER_SYS_TICK_CH; + + /* reset time */ + /* capure current decrementer value time */ + lastdec = timer_read(base, ch); + /* start "advancing" time stamp from 0 */ + timestamp = 0; +} + +unsigned long get_timer_masked(void) +{ + void __iomem *base = (void __iomem *)PHY_BASEADDR_TIMER; + int ch = CONFIG_TIMER_SYS_TICK_CH; + + unsigned long now = timer_read(base, ch); /* current tick value */ + + if (now >= lastdec) { /* normal mode (non roll) */ + /* move stamp fordward with absolute diff ticks */ + timestamp += now - lastdec; + } else { + /* we have overflow of the count down timer */ + /* nts = ts + ld + (TLV - now) + * ts=old stamp, ld=time that passed before passing through -1 + * (TLV-now) amount of time after passing though -1 + * nts = new "advancing time stamp"... + * it could also roll and cause problems. + */ + timestamp += now + TIMER_COUNT - lastdec; + } + /* save last */ + lastdec = now; + + debug("now=%lu, last=%lu, timestamp=%lu\n", now, lastdec, timestamp); + return (unsigned long)timestamp; +} + +void __udelay(unsigned long usec) +{ + unsigned long tmo, tmp; + + debug("+udelay=%ld\n", usec); + + if (!timerinit) + timer_init(); + + /* if "big" number, spread normalization to seconds */ + if (usec >= 1000) { + /* start to normalize for usec to ticks per sec */ + tmo = usec / 1000; + /* find number of "ticks" to wait to achieve target */ + tmo *= TIMER_FREQ; + /* finish normalize. */ + tmo /= 1000; + /* else small number, don't kill it prior to HZ multiply */ + } else { + tmo = usec * TIMER_FREQ; + tmo /= (1000 * 1000); + } + + tmp = get_timer_masked(); /* get current timestamp */ + debug("A. tmo=%ld, tmp=%ld\n", tmo, tmp); + + /* if setting this fordward will roll time stamp */ + if (tmp > (tmo + tmp + 1)) + /* reset "advancing" timestamp to 0, set lastdec value */ + reset_timer_masked(); + else + /* set advancing stamp wake up time */ + tmo += tmp; + + debug("B. tmo=%ld, tmp=%ld\n", tmo, tmp); + + /* loop till event */ + do { + tmp = get_timer_masked(); + } while (tmo > tmp); + debug("-udelay=%ld\n", usec); +} + +void udelay_masked(unsigned long usec) +{ + unsigned long tmo, endtime; + signed long diff; + + /* if "big" number, spread normalization to seconds */ + if (usec >= 1000) { + /* start to normalize for usec to ticks per sec */ + tmo = usec / 1000; + /* find number of "ticks" to wait to achieve target */ + tmo *= TIMER_FREQ; + /* finish normalize. */ + tmo /= 1000; + } else { /* else small number, don't kill it prior to HZ multiply */ + tmo = usec * TIMER_FREQ; + tmo /= (1000 * 1000); + } + + endtime = get_timer_masked() + tmo; + + do { + unsigned long now = get_timer_masked(); + + diff = endtime - now; + } while (diff >= 0); +} + +unsigned long long get_ticks(void) +{ + return get_timer_masked(); +} + +#if defined(CONFIG_ARCH_S5P4418) +ulong get_tbclk(void) +{ + ulong tbclk = TIMER_FREQ; + return tbclk; +} +#endif