add support for using spl code on at91sam9260 and at91sam9g45 based boards.
Signed-off-by: Heiko Schocher hs@denx.de Reviewed-by: Bo Shen voice.shen@atmel.com
---
Changes in v3: add comment from Bo shen - fix AT91_PMC_MCKR_CSS_MASK and AT91_PMC_MCKR_PRES_MASK - make matrix_init weak, and add it in the taurus board code - do not introduce ifdef mess for the differences between the SoCs, instead use a seperate file for each SoC: - for armv5 (arm926ejs, now at91 series), named it spl_at91.c, - for armv7 (cortex-a5, now, sama5d3), named it spl_atmel.c - move common code to arch/arm/cpu/at91-common/spl.c
Changes in v2: None
arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c | 22 ++++ arch/arm/cpu/arm926ejs/at91/clock.c | 60 ++++++++++ arch/arm/cpu/armv7/at91/clock.c | 27 +++++ arch/arm/cpu/at91-common/Makefile | 5 +- arch/arm/cpu/at91-common/sdram.c | 77 +++++++++++++ arch/arm/cpu/at91-common/spl.c | 89 +-------------- arch/arm/cpu/at91-common/spl_at91.c | 124 +++++++++++++++++++++ arch/arm/cpu/at91-common/spl_atmel.c | 76 +++++++++++++ arch/arm/include/asm/arch-at91/at91_common.h | 6 + arch/arm/include/asm/arch-at91/at91_pmc.h | 1 + arch/arm/include/asm/arch-at91/at91sam9260.h | 1 + .../arm/include/asm/arch-at91/at91sam9260_matrix.h | 5 + arch/arm/include/asm/arch-at91/at91sam9_sdramc.h | 22 +++- 13 files changed, 424 insertions(+), 91 deletions(-) create mode 100644 arch/arm/cpu/at91-common/sdram.c create mode 100644 arch/arm/cpu/at91-common/spl_at91.c create mode 100644 arch/arm/cpu/at91-common/spl_atmel.c
diff --git a/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c b/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c index cae4abc..7a7fd7d 100644 --- a/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c +++ b/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c @@ -8,8 +8,10 @@
#include <common.h> #include <asm/io.h> +#include <asm/arch/at91sam9260_matrix.h> #include <asm/arch/at91_common.h> #include <asm/arch/at91_pmc.h> +#include <asm/arch/at91sam9_sdramc.h> #include <asm/arch/gpio.h>
/* @@ -207,3 +209,23 @@ void at91_mci_hw_init(void) #endif } #endif + +void at91_sdram_hw_init(void) +{ + at91_set_a_periph(AT91_PIO_PORTC, 16, 0); + at91_set_a_periph(AT91_PIO_PORTC, 17, 0); + at91_set_a_periph(AT91_PIO_PORTC, 18, 0); + at91_set_a_periph(AT91_PIO_PORTC, 19, 0); + at91_set_a_periph(AT91_PIO_PORTC, 20, 0); + at91_set_a_periph(AT91_PIO_PORTC, 21, 0); + at91_set_a_periph(AT91_PIO_PORTC, 22, 0); + at91_set_a_periph(AT91_PIO_PORTC, 23, 0); + at91_set_a_periph(AT91_PIO_PORTC, 24, 0); + at91_set_a_periph(AT91_PIO_PORTC, 25, 0); + at91_set_a_periph(AT91_PIO_PORTC, 26, 0); + at91_set_a_periph(AT91_PIO_PORTC, 27, 0); + at91_set_a_periph(AT91_PIO_PORTC, 28, 0); + at91_set_a_periph(AT91_PIO_PORTC, 29, 0); + at91_set_a_periph(AT91_PIO_PORTC, 30, 0); + at91_set_a_periph(AT91_PIO_PORTC, 31, 0); +} diff --git a/arch/arm/cpu/arm926ejs/at91/clock.c b/arch/arm/cpu/arm926ejs/at91/clock.c index 31315b5..f363982 100644 --- a/arch/arm/cpu/arm926ejs/at91/clock.c +++ b/arch/arm/cpu/arm926ejs/at91/clock.c @@ -187,3 +187,63 @@ int at91_clock_init(unsigned long main_clock)
return 0; } + +#if !defined(AT91_PLL_LOCK_TIMEOUT) +#define AT91_PLL_LOCK_TIMEOUT 1000000 +#endif + +void at91_plla_init(u32 pllar) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + int timeout = AT91_PLL_LOCK_TIMEOUT; + + writel(pllar, &pmc->pllar); + while (!(readl(&pmc->sr) & (AT91_PMC_LOCKA | AT91_PMC_MCKRDY))) { + timeout--; + if (timeout == 0) + break; + } +} +void at91_pllb_init(u32 pllbr) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + int timeout = AT91_PLL_LOCK_TIMEOUT; + + writel(pllbr, &pmc->pllbr); + while (!(readl(&pmc->sr) & (AT91_PMC_LOCKB | AT91_PMC_MCKRDY))) { + timeout--; + if (timeout == 0) + break; + } +} + +void at91_mck_init(u32 mckr) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + int timeout = AT91_PLL_LOCK_TIMEOUT; + u32 tmp; + + tmp = readl(&pmc->mckr); + tmp &= ~(AT91_PMC_MCKR_PRES_MASK | + AT91_PMC_MCKR_MDIV_MASK | + AT91_PMC_MCKR_PLLADIV_MASK | + AT91_PMC_MCKR_CSS_MASK); + tmp |= mckr & (AT91_PMC_MCKR_PRES_MASK | + AT91_PMC_MCKR_MDIV_MASK | + AT91_PMC_MCKR_PLLADIV_MASK | + AT91_PMC_MCKR_CSS_MASK); + writel(tmp, &pmc->mckr); + + while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY)) { + timeout--; + if (timeout == 0) + break; + } +} + +void at91_periph_clk_enable(int id) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + + writel(1 << id, &pmc->pcer); +} diff --git a/arch/arm/cpu/armv7/at91/clock.c b/arch/arm/cpu/armv7/at91/clock.c index 36ed4a6..363081a 100644 --- a/arch/arm/cpu/armv7/at91/clock.c +++ b/arch/arm/cpu/armv7/at91/clock.c @@ -111,6 +111,33 @@ int at91_clock_init(unsigned long main_clock) return 0; }
+void at91_plla_init(u32 pllar) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + + writel(pllar, &pmc->pllar); + while (!(readl(&pmc->sr) & (AT91_PMC_LOCKA | AT91_PMC_MCKRDY))) + ; +} + +void at91_mck_init(u32 mckr) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + u32 tmp; + + tmp = readl(&pmc->mckr); + tmp &= ~(AT91_PMC_MCKR_PRES_MASK | + AT91_PMC_MCKR_MDIV_MASK | + AT91_PMC_MCKR_PLLADIV_2); + tmp |= mckr & (AT91_PMC_MCKR_PRES_MASK | + AT91_PMC_MCKR_MDIV_MASK | + AT91_PMC_MCKR_PLLADIV_2); + writel(tmp, &pmc->mckr); + + while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY)) + ; +} + void at91_periph_clk_enable(int id) { struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; diff --git a/arch/arm/cpu/at91-common/Makefile b/arch/arm/cpu/at91-common/Makefile index f62863a..89e1577 100644 --- a/arch/arm/cpu/at91-common/Makefile +++ b/arch/arm/cpu/at91-common/Makefile @@ -10,7 +10,8 @@
obj-$(CONFIG_AT91_WANTS_COMMON_PHY) += phy.o ifneq ($(CONFIG_SPL_BUILD),) -obj-$(CONFIG_AT91SAM9M10G45) += mpddrc.o -obj-$(CONFIG_SAMA5D3) += mpddrc.o +obj-$(CONFIG_AT91SAM9G20) += sdram.o spl_at91.o +obj-$(CONFIG_AT91SAM9M10G45) += mpddrc.o spl_at91.o +obj-$(CONFIG_SAMA5D3) += mpddrc.o spl_atmel.o obj-y += spl.o endif diff --git a/arch/arm/cpu/at91-common/sdram.c b/arch/arm/cpu/at91-common/sdram.c new file mode 100644 index 0000000..5758b06 --- /dev/null +++ b/arch/arm/cpu/at91-common/sdram.c @@ -0,0 +1,77 @@ +/* + * (C) Copyright 2014 + * Heiko Schocher, DENX Software Engineering, hs@denx.de. + * + * Based on: + * (C) Copyright 2007-2008 + * Stelian Pop stelian@popies.net + * Lead Tech Design <www.leadtechdesign.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/at91_common.h> +#include <asm/arch/at91_pmc.h> +#include <asm/arch/at91sam9_sdramc.h> +#include <asm/arch/gpio.h> + +int sdramc_initialize(unsigned int sdram_address, const struct sdramc_reg *p) +{ + struct sdramc_reg *reg = (struct sdramc_reg *)ATMEL_BASE_SDRAMC; + unsigned int i; + + /* SDRAM feature must be in the configuration register */ + writel(p->cr, ®->cr); + + /* The SDRAM memory type must be set in the Memory Device Register */ + writel(p->mdr, ®->mdr); + + /* + * The minimum pause of 200 us is provided to precede any single + * toggle + */ + for (i = 0; i < 1000; i++) + ; + + /* A NOP command is issued to the SDRAM devices */ + writel(AT91_SDRAMC_MODE_NOP, ®->mr); + writel(0x00000000, sdram_address); + + /* An All Banks Precharge command is issued to the SDRAM devices */ + writel(AT91_SDRAMC_MODE_PRECHARGE, ®->mr); + writel(0x00000000, sdram_address); + + for (i = 0; i < 10000; i++) + ; + + /* Eight auto-refresh cycles are provided */ + for (i = 0; i < 8; i++) { + writel(AT91_SDRAMC_MODE_REFRESH, ®->mr); + writel(0x00000001 + i, sdram_address + 4 + 4 * i); + } + + /* + * A Mode Register set (MRS) cyscle is issued to program the + * SDRAM parameters(TCSR, PASR, DS) + */ + writel(AT91_SDRAMC_MODE_LMR, ®->mr); + writel(0xcafedede, sdram_address + 0x24); + + /* + * The application must go into Normal Mode, setting Mode + * to 0 in the Mode Register and perform a write access at + * any location in the SDRAM. + */ + writel(AT91_SDRAMC_MODE_NORMAL, ®->mr); + writel(0x00000000, sdram_address); /* Perform Normal mode */ + + /* + * Write the refresh rate into the count field in the SDRAMC + * Refresh Timer Rgister. + */ + writel(p->tr, ®->tr); + + return 0; +} diff --git a/arch/arm/cpu/at91-common/spl.c b/arch/arm/cpu/at91-common/spl.c index 674a470..6473320 100644 --- a/arch/arm/cpu/at91-common/spl.c +++ b/arch/arm/cpu/at91-common/spl.c @@ -8,83 +8,17 @@ #include <common.h> #include <asm/io.h> #include <asm/arch/at91_common.h> -#include <asm/arch/at91_pmc.h> #include <asm/arch/at91_wdt.h> #include <asm/arch/clk.h> #include <spl.h>
-static void at91_disable_wdt(void) +void at91_disable_wdt(void) { struct at91_wdt *wdt = (struct at91_wdt *)ATMEL_BASE_WDT;
writel(AT91_WDT_MR_WDDIS, &wdt->mr); }
-static void switch_to_main_crystal_osc(void) -{ - struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; - u32 tmp; - - tmp = readl(&pmc->mor); - tmp &= ~AT91_PMC_MOR_OSCOUNT(0xff); - tmp &= ~AT91_PMC_MOR_KEY(0xff); - tmp |= AT91_PMC_MOR_MOSCEN; - tmp |= AT91_PMC_MOR_OSCOUNT(8); - tmp |= AT91_PMC_MOR_KEY(0x37); - writel(tmp, &pmc->mor); - while (!(readl(&pmc->sr) & AT91_PMC_IXR_MOSCS)) - ; - - tmp = readl(&pmc->mor); - tmp &= ~AT91_PMC_MOR_OSCBYPASS; - tmp &= ~AT91_PMC_MOR_KEY(0xff); - tmp |= AT91_PMC_MOR_KEY(0x37); - writel(tmp, &pmc->mor); - - tmp = readl(&pmc->mor); - tmp |= AT91_PMC_MOR_MOSCSEL; - tmp &= ~AT91_PMC_MOR_KEY(0xff); - tmp |= AT91_PMC_MOR_KEY(0x37); - writel(tmp, &pmc->mor); - - while (!(readl(&pmc->sr) & AT91_PMC_IXR_MOSCSELS)) - ; - - tmp = readl(&pmc->mor); - tmp &= ~AT91_PMC_MOR_MOSCRCEN; - tmp &= ~AT91_PMC_MOR_KEY(0xff); - tmp |= AT91_PMC_MOR_KEY(0x37); - writel(tmp, &pmc->mor); -} - -void at91_plla_init(u32 pllar) -{ - struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; - - writel(pllar, &pmc->pllar); - while (!(readl(&pmc->sr) & (AT91_PMC_LOCKA | AT91_PMC_MCKRDY))) - ; -} - -void at91_mck_init(u32 mckr) -{ - struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; - u32 tmp; - - tmp = readl(&pmc->mckr); - tmp &= ~(AT91_PMC_MCKR_PRES_MASK | - AT91_PMC_MCKR_MDIV_MASK | - AT91_PMC_MCKR_PLLADIV_2); - tmp |= mckr & (AT91_PMC_MCKR_PRES_MASK | - AT91_PMC_MCKR_MDIV_MASK | - AT91_PMC_MCKR_PLLADIV_2); - writel(tmp, &pmc->mckr); - - while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY)) - ; -} - - u32 spl_boot_device(void) { #ifdef CONFIG_SYS_USE_MMC @@ -110,24 +44,3 @@ u32 spl_boot_mode(void) hang(); } } - -void s_init(void) -{ - switch_to_main_crystal_osc(); - - /* disable watchdog */ - at91_disable_wdt(); - - /* PMC configuration */ - at91_pmc_init(); - - at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK); - - timer_init(); - - board_early_init_f(); - - preloader_console_init(); - - mem_init(); -} diff --git a/arch/arm/cpu/at91-common/spl_at91.c b/arch/arm/cpu/at91-common/spl_at91.c new file mode 100644 index 0000000..89f588b --- /dev/null +++ b/arch/arm/cpu/at91-common/spl_at91.c @@ -0,0 +1,124 @@ +/* + * (C) Copyright 2014 DENX Software Engineering + * Heiko Schocher hs@denx.de + * + * Based on: + * Copyright (C) 2013 Atmel Corporation + * Bo Shen voice.shen@atmel.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/at91_common.h> +#include <asm/arch/at91sam9_matrix.h> +#include <asm/arch/at91_pit.h> +#include <asm/arch/at91_pmc.h> +#include <asm/arch/at91_rstc.h> +#include <asm/arch/at91_wdt.h> +#include <asm/arch/clk.h> +#include <spl.h> + +DECLARE_GLOBAL_DATA_PTR; + +static void enable_ext_reset(void) +{ + struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC; + + writel(AT91_RSTC_KEY | AT91_RSTC_MR_URSTEN, &rstc->mr); +} + +void lowlevel_clock_init(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + + if (!(readl(&pmc->sr) & AT91_PMC_MOSCS)) { + /* Enable Main Oscillator */ + writel(AT91_PMC_MOSCS | (0x40 << 8), &pmc->mor); + + /* Wait until Main Oscillator is stable */ + while (!(readl(&pmc->sr) & AT91_PMC_MOSCS)) + ; + } + + /* After stabilization, switch to Main Oscillator */ + if ((readl(&pmc->mckr) & AT91_PMC_CSS) == AT91_PMC_CSS_SLOW) { + unsigned long tmp; + + tmp = readl(&pmc->mckr); + tmp &= ~AT91_PMC_CSS; + tmp |= AT91_PMC_CSS_MAIN; + writel(tmp, &pmc->mckr); + while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY)) + ; + + tmp &= ~AT91_PMC_PRES; + tmp |= AT91_PMC_PRES_1; + writel(tmp, &pmc->mckr); + while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY)) + ; + } + + return; +} + +void __weak matrix_init(void) +{ +} + +void __weak at91_spl_board_init(void) +{ +} + +void spl_board_init(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + + lowlevel_clock_init(); + at91_disable_wdt(); + + /* + * At this stage the main oscillator is supposed to be enabled + * PCK = MCK = MOSC + */ + writel(0x00, &pmc->pllicpr); + + /* Configure PLLA = MOSC * (PLL_MULA + 1) / PLL_DIVA */ + at91_plla_init(CONFIG_SYS_AT91_PLLA); + + /* PCK = PLLA = 2 * MCK */ + at91_mck_init(CONFIG_SYS_MCKR); + + /* Switch MCK on PLLA output */ + at91_mck_init(CONFIG_SYS_MCKR_CSS); + +#if defined(CONFIG_SYS_AT91_PLLB) + /* Configure PLLB */ + at91_pllb_init(CONFIG_SYS_AT91_PLLB); +#endif + + /* Enable External Reset */ + enable_ext_reset(); + + /* Initialize matrix */ + matrix_init(); + + gd->arch.mck_rate_hz = CONFIG_SYS_MASTER_CLOCK; + /* + * init timer long enough for using in spl. + */ + timer_init(); + + /* enable clocks for all PIOs */ + at91_periph_clk_enable(ATMEL_ID_PIOA); + at91_periph_clk_enable(ATMEL_ID_PIOB); + at91_periph_clk_enable(ATMEL_ID_PIOC); + /* init console */ + at91_seriald_hw_init(); + preloader_console_init(); + + mem_init(); + + at91_spl_board_init(); +} diff --git a/arch/arm/cpu/at91-common/spl_atmel.c b/arch/arm/cpu/at91-common/spl_atmel.c new file mode 100644 index 0000000..25185b0 --- /dev/null +++ b/arch/arm/cpu/at91-common/spl_atmel.c @@ -0,0 +1,76 @@ +/* + * Copyright (C) 2013 Atmel Corporation + * Bo Shen voice.shen@atmel.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/at91_common.h> +#include <asm/arch/at91_pit.h> +#include <asm/arch/at91_pmc.h> +#include <asm/arch/at91_rstc.h> +#include <asm/arch/at91_wdt.h> +#include <asm/arch/clk.h> +#include <spl.h> + +DECLARE_GLOBAL_DATA_PTR; + +static void switch_to_main_crystal_osc(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + u32 tmp; + + tmp = readl(&pmc->mor); + tmp &= ~AT91_PMC_MOR_OSCOUNT(0xff); + tmp &= ~AT91_PMC_MOR_KEY(0xff); + tmp |= AT91_PMC_MOR_MOSCEN; + tmp |= AT91_PMC_MOR_OSCOUNT(8); + tmp |= AT91_PMC_MOR_KEY(0x37); + writel(tmp, &pmc->mor); + while (!(readl(&pmc->sr) & AT91_PMC_IXR_MOSCS)) + ; + + tmp = readl(&pmc->mor); + tmp &= ~AT91_PMC_MOR_OSCBYPASS; + tmp &= ~AT91_PMC_MOR_KEY(0xff); + tmp |= AT91_PMC_MOR_KEY(0x37); + writel(tmp, &pmc->mor); + + tmp = readl(&pmc->mor); + tmp |= AT91_PMC_MOR_MOSCSEL; + tmp &= ~AT91_PMC_MOR_KEY(0xff); + tmp |= AT91_PMC_MOR_KEY(0x37); + writel(tmp, &pmc->mor); + + while (!(readl(&pmc->sr) & AT91_PMC_IXR_MOSCSELS)) + ; + + tmp = readl(&pmc->mor); + tmp &= ~AT91_PMC_MOR_MOSCRCEN; + tmp &= ~AT91_PMC_MOR_KEY(0xff); + tmp |= AT91_PMC_MOR_KEY(0x37); + writel(tmp, &pmc->mor); +} + +void s_init(void) +{ + switch_to_main_crystal_osc(); + + /* disable watchdog */ + at91_disable_wdt(); + + /* PMC configuration */ + at91_pmc_init(); + + at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK); + + timer_init(); + + board_early_init_f(); + + preloader_console_init(); + + mem_init(); +} diff --git a/arch/arm/include/asm/arch-at91/at91_common.h b/arch/arm/include/asm/arch-at91/at91_common.h index 59e2f43..912e55c 100644 --- a/arch/arm/include/asm/arch-at91/at91_common.h +++ b/arch/arm/include/asm/arch-at91/at91_common.h @@ -23,9 +23,15 @@ void at91_udp_hw_init(void); void at91_uhp_hw_init(void); void at91_lcd_hw_init(void); void at91_plla_init(u32 pllar); +void at91_pllb_init(u32 pllar); void at91_mck_init(u32 mckr); void at91_pmc_init(void); void mem_init(void); void at91_phy_reset(void); +void at91_sdram_hw_init(void); +void at91_mck_init(u32 mckr); +void at91_spl_board_init(void); +void at91_disable_wdt(void); +void matrix_init(void);
#endif /* AT91_COMMON_H */ diff --git a/arch/arm/include/asm/arch-at91/at91_pmc.h b/arch/arm/include/asm/arch-at91/at91_pmc.h index 27331ff..e206b55 100644 --- a/arch/arm/include/asm/arch-at91/at91_pmc.h +++ b/arch/arm/include/asm/arch-at91/at91_pmc.h @@ -133,6 +133,7 @@ typedef struct at91_pmc { #define AT91_PMC_MCKR_MDIV_MASK 0x00000300 #endif
+#define AT91_PMC_MCKR_PLLADIV_MASK 0x00003000 #define AT91_PMC_MCKR_PLLADIV_1 0x00000000 #define AT91_PMC_MCKR_PLLADIV_2 0x00001000
diff --git a/arch/arm/include/asm/arch-at91/at91sam9260.h b/arch/arm/include/asm/arch-at91/at91sam9260.h index 2e902ee..1e613fa 100644 --- a/arch/arm/include/asm/arch-at91/at91sam9260.h +++ b/arch/arm/include/asm/arch-at91/at91sam9260.h @@ -95,6 +95,7 @@ #define ATMEL_BASE_SDRAMC 0xffffea00 #define ATMEL_BASE_SMC 0xffffec00 #define ATMEL_BASE_MATRIX 0xffffee00 +#define ATMEL_BASE_CCFG 0xffffef14 #define ATMEL_BASE_AIC 0xfffff000 #define ATMEL_BASE_DBGU 0xfffff200 #define ATMEL_BASE_PIOA 0xfffff400 diff --git a/arch/arm/include/asm/arch-at91/at91sam9260_matrix.h b/arch/arm/include/asm/arch-at91/at91sam9260_matrix.h index 4755fa1..dc61f48 100644 --- a/arch/arm/include/asm/arch-at91/at91sam9260_matrix.h +++ b/arch/arm/include/asm/arch-at91/at91sam9260_matrix.h @@ -61,5 +61,10 @@ struct at91_matrix { #define AT91_MATRIX_DBPUC (1 << 8) #define AT91_MATRIX_VDDIOMSEL_1_8V (0 << 16) #define AT91_MATRIX_VDDIOMSEL_3_3V (1 << 16) +#define AT91_MATRIX_EBI_IOSR_SEL (1 << 17) + +/* Maximum Number of Allowed Cycles for a Burst */ +#define AT91_MATRIX_SLOT_CYCLE (0xff << 0) +#define AT91_MATRIX_SLOT_CYCLE_(x) (x << 0)
#endif diff --git a/arch/arm/include/asm/arch-at91/at91sam9_sdramc.h b/arch/arm/include/asm/arch-at91/at91sam9_sdramc.h index 5c98cc7..3a076c6 100644 --- a/arch/arm/include/asm/arch-at91/at91sam9_sdramc.h +++ b/arch/arm/include/asm/arch-at91/at91sam9_sdramc.h @@ -25,6 +25,21 @@ #define AT91_ASM_SDRAMC_CR (ATMEL_BASE_SDRAMC + 0x08) #define AT91_ASM_SDRAMC_MDR (ATMEL_BASE_SDRAMC + 0x24)
+#else +struct sdramc_reg { + u32 mr; + u32 tr; + u32 cr; + u32 lpr; + u32 ier; + u32 idr; + u32 imr; + u32 isr; + u32 mdr; +}; + +int sdramc_initialize(unsigned int sdram_address, + const struct sdramc_reg *p); #endif
/* SDRAM Controller (SDRAMC) registers */ @@ -62,11 +77,17 @@ #define AT91_SDRAMC_DBW_32 (0 << 7) #define AT91_SDRAMC_DBW_16 (1 << 7) #define AT91_SDRAMC_TWR (0xf << 8) /* Write Recovery Delay */ +#define AT91_SDRAMC_TWR_VAL(x) (x << 8) #define AT91_SDRAMC_TRC (0xf << 12) /* Row Cycle Delay */ +#define AT91_SDRAMC_TRC_VAL(x) (x << 12) #define AT91_SDRAMC_TRP (0xf << 16) /* Row Precharge Delay */ +#define AT91_SDRAMC_TRP_VAL(x) (x << 16) #define AT91_SDRAMC_TRCD (0xf << 20) /* Row to Column Delay */ +#define AT91_SDRAMC_TRCD_VAL(x) (x << 20) #define AT91_SDRAMC_TRAS (0xf << 24) /* Active to Precharge Delay */ +#define AT91_SDRAMC_TRAS_VAL(x) (x << 24) #define AT91_SDRAMC_TXSR (0xf << 28) /* Exit Self Refresh to Active Delay */ +#define AT91_SDRAMC_TXSR_VAL(x) (x << 28)
#define AT91_SDRAMC_LPR (ATMEL_BASE_SDRAMC + 0x10) /* SDRAM Controller Low Power Register */ #define AT91_SDRAMC_LPCB (3 << 0) /* Low-power Configurations */ @@ -93,5 +114,4 @@ #define AT91_SDRAMC_MD_SDRAM 0 #define AT91_SDRAMC_MD_LOW_POWER_SDRAM 1
- #endif