Enable SPL support for at91sam9n12ek boards, now it supports boot up from NAND flash, serial flash.
Signed-off-by: Bo Shen voice.shen@atmel.com ---
Changes in v2: - Remove the meaningless prefix "+S:" in configuration file.
arch/arm/mach-at91/Kconfig | 1 + arch/arm/mach-at91/Makefile | 1 + arch/arm/mach-at91/include/mach/at91_pmc.h | 4 +- arch/arm/mach-at91/mpddrc.c | 2 +- arch/arm/mach-at91/spl_at91.c | 2 +- board/atmel/at91sam9n12ek/at91sam9n12ek.c | 73 ++++++++++++++++++++++++++++++ configs/at91sam9n12ek_nandflash_defconfig | 1 + configs/at91sam9n12ek_spiflash_defconfig | 1 + include/configs/at91sam9n12ek.h | 58 +++++++++++++++++++++++- 9 files changed, 138 insertions(+), 5 deletions(-)
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index bdf87f9..30c4e17 100644 --- a/arch/arm/mach-at91/Kconfig +++ b/arch/arm/mach-at91/Kconfig @@ -75,6 +75,7 @@ config TARGET_PM9G45 config TARGET_AT91SAM9N12EK bool "Atmel AT91SAM9N12-EK board" select CPU_ARM926EJS + select SUPPORT_SPL
config TARGET_AT91SAM9RLEK bool "Atmel at91sam9rl reference board" diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile index ba83616..0d3ee48 100644 --- a/arch/arm/mach-at91/Makefile +++ b/arch/arm/mach-at91/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_AT91_WANTS_COMMON_PHY) += phy.o ifneq ($(CONFIG_SPL_BUILD),) obj-$(CONFIG_AT91SAM9G20) += sdram.o spl_at91.o obj-$(CONFIG_AT91SAM9M10G45) += mpddrc.o spl_at91.o +obj-$(CONFIG_AT91SAM9N12) += mpddrc.o spl_at91.o obj-$(CONFIG_AT91SAM9X5) += mpddrc.o spl_at91.o obj-$(CONFIG_SAMA5D3) += mpddrc.o spl_atmel.o obj-$(CONFIG_SAMA5D4) += mpddrc.o spl_atmel.o diff --git a/arch/arm/mach-at91/include/mach/at91_pmc.h b/arch/arm/mach-at91/include/mach/at91_pmc.h index c903260..ebb7dec 100644 --- a/arch/arm/mach-at91/include/mach/at91_pmc.h +++ b/arch/arm/mach-at91/include/mach/at91_pmc.h @@ -98,7 +98,7 @@ typedef struct at91_pmc { #define AT91_PMC_MCKR_CSS_MASK 0x00000003
#if defined(CONFIG_SAMA5D3) || defined(CONFIG_SAMA5D4) || \ - defined(CONFIG_AT91SAM9X5) + defined(CONFIG_AT91SAM9X5) || defined(CONFIG_AT91SAM9N12) #define AT91_PMC_MCKR_PRES_1 0x00000000 #define AT91_PMC_MCKR_PRES_2 0x00000010 #define AT91_PMC_MCKR_PRES_4 0x00000020 @@ -128,7 +128,7 @@ typedef struct at91_pmc { #define AT91_PMC_MCKR_MDIV_1 0x00000000 #define AT91_PMC_MCKR_MDIV_2 0x00000100 #if defined(CONFIG_SAMA5D3) || defined(CONFIG_SAMA5D4) || \ - defined(CONFIG_AT91SAM9X5) + defined(CONFIG_AT91SAM9X5) || defined(CONFIG_AT91SAM9N12) #define AT91_PMC_MCKR_MDIV_3 0x00000300 #endif #define AT91_PMC_MCKR_MDIV_4 0x00000200 diff --git a/arch/arm/mach-at91/mpddrc.c b/arch/arm/mach-at91/mpddrc.c index 24d5fcd..e2b6a49 100644 --- a/arch/arm/mach-at91/mpddrc.c +++ b/arch/arm/mach-at91/mpddrc.c @@ -20,7 +20,7 @@ static inline void atmel_mpddr_op(int mode, u32 ram_address) static int ddr2_decodtype_is_seq(u32 cr) { #if defined(CONFIG_SAMA5D3) || defined(CONFIG_SAMA5D4) || \ - defined(CONFIG_AT91SAM9X5) + defined(CONFIG_AT91SAM9X5) || defined(CONFIG_AT91SAM9N12) if (cr & ATMEL_MPDDRC_CR_DECOD_INTERLEAVED) return 0; #endif diff --git a/arch/arm/mach-at91/spl_at91.c b/arch/arm/mach-at91/spl_at91.c index e28e568..a79a9dc 100644 --- a/arch/arm/mach-at91/spl_at91.c +++ b/arch/arm/mach-at91/spl_at91.c @@ -115,7 +115,7 @@ void board_init_f(ulong dummy) timer_init();
/* enable clocks for all PIOs */ -#ifdef CONFIG_AT91SAM9X5 +#if defined(CONFIG_AT91SAM9X5) || defined(CONFIG_AT91SAM9N12) at91_periph_clk_enable(ATMEL_ID_PIOAB); at91_periph_clk_enable(ATMEL_ID_PIOCD); #else diff --git a/board/atmel/at91sam9n12ek/at91sam9n12ek.c b/board/atmel/at91sam9n12ek/at91sam9n12ek.c index 9adc992..4f46a03 100644 --- a/board/atmel/at91sam9n12ek/at91sam9n12ek.c +++ b/board/atmel/at91sam9n12ek/at91sam9n12ek.c @@ -257,3 +257,76 @@ int dram_init(void) CONFIG_SYS_SDRAM_SIZE); return 0; } + +#if defined(CONFIG_SPL_BUILD) +#include <spl.h> +#include <nand.h> + +void at91_spl_board_init(void) +{ +#ifdef CONFIG_SYS_USE_MMC + at91_mci_hw_init(); +#elif CONFIG_SYS_USE_NANDFLASH + at91sam9n12ek_nand_hw_init(); +#elif CONFIG_SYS_USE_SPIFLASH + at91_spi0_hw_init(1 << 4); +#endif +} + +#include <asm/arch/atmel_mpddrc.h> +static void ddr2_conf(struct atmel_mpddr *ddr2) +{ + ddr2->md = (ATMEL_MPDDRC_MD_DBW_16_BITS | ATMEL_MPDDRC_MD_DDR2_SDRAM); + + ddr2->cr = (ATMEL_MPDDRC_CR_NC_COL_10 | + ATMEL_MPDDRC_CR_NR_ROW_13 | + ATMEL_MPDDRC_CR_CAS_DDR_CAS3 | + ATMEL_MPDDRC_CR_NB_8BANKS | + ATMEL_MPDDRC_CR_DECOD_INTERLEAVED); + + ddr2->rtr = 0x411; + + ddr2->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET | + 2 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET | + 2 << ATMEL_MPDDRC_TPR0_TWR_OFFSET | + 8 << ATMEL_MPDDRC_TPR0_TRC_OFFSET | + 2 << ATMEL_MPDDRC_TPR0_TRP_OFFSET | + 2 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET | + 2 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET | + 2 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET); + + ddr2->tpr1 = (2 << ATMEL_MPDDRC_TPR1_TXP_OFFSET | + 200 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET | + 19 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET | + 18 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET); + + ddr2->tpr2 = (2 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET | + 3 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET | + 7 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET | + 2 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET); +} + +void mem_init(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX; + struct atmel_mpddr ddr2; + unsigned long csa; + + ddr2_conf(&ddr2); + + /* enable DDR2 clock */ + writel(0x4, &pmc->scer); + + /* Chip select 1 is for DDR2/SDRAM */ + csa = readl(&matrix->ebicsa); + csa |= AT91_MATRIX_EBI_CS1A_SDRAMC; + csa &= ~AT91_MATRIX_EBI_DBPU_OFF; + csa |= AT91_MATRIX_EBI_DBPD_OFF; + csa |= AT91_MATRIX_EBI_EBI_IOSR_NORMAL; + writel(csa, &matrix->ebicsa); + + /* DDRAM2 Controller initialize */ + ddr2_init(ATMEL_BASE_CS1, &ddr2); +} +#endif diff --git a/configs/at91sam9n12ek_nandflash_defconfig b/configs/at91sam9n12ek_nandflash_defconfig index f908246..11b42d4 100644 --- a/configs/at91sam9n12ek_nandflash_defconfig +++ b/configs/at91sam9n12ek_nandflash_defconfig @@ -1,3 +1,4 @@ +CONFIG_SPL=y CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9N12,SYS_USE_NANDFLASH" CONFIG_ARM=y CONFIG_ARCH_AT91=y diff --git a/configs/at91sam9n12ek_spiflash_defconfig b/configs/at91sam9n12ek_spiflash_defconfig index d106b5a..5426bcd 100644 --- a/configs/at91sam9n12ek_spiflash_defconfig +++ b/configs/at91sam9n12ek_spiflash_defconfig @@ -1,3 +1,4 @@ +CONFIG_SPL=y CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9N12,SYS_USE_SPIFLASH" CONFIG_ARM=y CONFIG_ARCH_AT91=y diff --git a/include/configs/at91sam9n12ek.h b/include/configs/at91sam9n12ek.h index f02fce9..aeec8b8 100644 --- a/include/configs/at91sam9n12ek.h +++ b/include/configs/at91sam9n12ek.h @@ -228,6 +228,62 @@ * Size of malloc() pool */ #define CONFIG_SYS_MALLOC_LEN (4 * 1024 * 1024) -#define CONFIG_STACKSIZE (32 * 1024) /* regular stack */ + +/* SPL */ +#define CONFIG_SPL_FRAMEWORK +#define CONFIG_SPL_TEXT_BASE 0x300000 +#define CONFIG_SPL_MAX_SIZE 0x6000 +#define CONFIG_SPL_STACK 0x308000 + +#define CONFIG_SPL_BSS_START_ADDR 0x20000000 +#define CONFIG_SPL_BSS_MAX_SIZE 0x80000 +#define CONFIG_SYS_SPL_MALLOC_START 0x20080000 +#define CONFIG_SYS_SPL_MALLOC_SIZE 0x80000 + +#define CONFIG_SPL_LIBCOMMON_SUPPORT +#define CONFIG_SPL_LIBGENERIC_SUPPORT +#define CONFIG_SPL_GPIO_SUPPORT +#define CONFIG_SPL_SERIAL_SUPPORT + +#define CONFIG_SPL_BOARD_INIT +#define CONFIG_SYS_MONITOR_LEN (512 << 10) + +#define CONFIG_SYS_MASTER_CLOCK 132096000 +#define CONFIG_SYS_AT91_PLLA 0x20953f03 +#define CONFIG_SYS_MCKR 0x1301 +#define CONFIG_SYS_MCKR_CSS 0x1302 + +#define ATMEL_BASE_MPDDRC ATMEL_BASE_DDRSDRC + +#ifdef CONFIG_SYS_USE_MMC +#define CONFIG_SPL_LDSCRIPT arch/arm/mach-at91/arm926ejs/u-boot-spl.lds +#define CONFIG_SPL_MMC_SUPPORT +#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 0x400 +#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x200 +#define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 1 +#define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img" +#define CONFIG_SPL_FAT_SUPPORT +#define CONFIG_SPL_LIBDISK_SUPPORT + +#elif CONFIG_SYS_USE_NANDFLASH +#define CONFIG_SPL_NAND_SUPPORT +#define CONFIG_SPL_NAND_DRIVERS +#define CONFIG_SPL_NAND_BASE +#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x40000 +#define CONFIG_SYS_NAND_5_ADDR_CYCLE +#define CONFIG_SYS_NAND_PAGE_SIZE 0x800 +#define CONFIG_SYS_NAND_PAGE_COUNT 64 +#define CONFIG_SYS_NAND_OOBSIZE 64 +#define CONFIG_SYS_NAND_BLOCK_SIZE 0x20000 +#define CONFIG_SYS_NAND_BAD_BLOCK_POS 0x0 +#define CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER + +#elif CONFIG_SYS_USE_SPIFLASH +#define CONFIG_SPL_SPI_SUPPORT +#define CONFIG_SPL_SPI_FLASH_SUPPORT +#define CONFIG_SPL_SPI_LOAD +#define CONFIG_SYS_SPI_U_BOOT_OFFS 0x8400 + +#endif
#endif