diff options
| author | Bo Shen <voice.shen@atmel.com> | 2014-12-15 13:24:38 +0800 |
|---|---|---|
| committer | Andreas Bießmann <andreas.devel@googlemail.com> | 2015-02-07 23:42:53 +0100 |
| commit | 5a4c9c22872725d9b02fb11fdcec063ccea9536f (patch) | |
| tree | f67d1ca5c0c14091baf8fb7eddcc9d4439bc9997 /board/atmel | |
| parent | 01c073c013551aa3461a96a23617e2179bda1f5b (diff) | |
ARM: atmel: sama5d4ek: enable SPL support
The sama5d4ek support boot up from NAND flash, SD/MMC card and
also the SPI flash.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Diffstat (limited to 'board/atmel')
| -rw-r--r-- | board/atmel/sama5d4ek/sama5d4ek.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/board/atmel/sama5d4ek/sama5d4ek.c b/board/atmel/sama5d4ek/sama5d4ek.c index d8ff6489574..46e504131c8 100644 --- a/board/atmel/sama5d4ek/sama5d4ek.c +++ b/board/atmel/sama5d4ek/sama5d4ek.c @@ -10,6 +10,7 @@ #include <asm/arch/at91_common.h> #include <asm/arch/at91_pmc.h> #include <asm/arch/at91_rstc.h> +#include <asm/arch/atmel_mpddrc.h> #include <asm/arch/atmel_usba_udc.h> #include <asm/arch/gpio.h> #include <asm/arch/clk.h> @@ -325,3 +326,87 @@ int board_eth_init(bd_t *bis) return rc; } + +/* SPL */ +#ifdef CONFIG_SPL_BUILD +void spl_board_init(void) +{ +#ifdef CONFIG_SYS_USE_MMC + sama5d4ek_mci1_hw_init(); +#elif CONFIG_SYS_USE_NANDFLASH + sama5d4ek_nand_hw_init(); +#elif CONFIG_SYS_USE_SERIALFLASH + sama5d4ek_spi0_hw_init(); +#endif +} + +static void ddr2_conf(struct atmel_mpddr *ddr2) +{ + ddr2->md = (ATMEL_MPDDRC_MD_DBW_32_BITS | ATMEL_MPDDRC_MD_DDR2_SDRAM); + + ddr2->cr = (ATMEL_MPDDRC_CR_NC_COL_10 | + ATMEL_MPDDRC_CR_NR_ROW_14 | + ATMEL_MPDDRC_CR_CAS_DDR_CAS3 | + ATMEL_MPDDRC_CR_NB_8BANKS | + ATMEL_MPDDRC_CR_NDQS_DISABLED | + ATMEL_MPDDRC_CR_DECOD_INTERLEAVED | + ATMEL_MPDDRC_CR_UNAL_SUPPORTED); + + ddr2->rtr = 0x2b0; + + ddr2->tpr0 = (8 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET | + 3 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET | + 3 << ATMEL_MPDDRC_TPR0_TWR_OFFSET | + 10 << ATMEL_MPDDRC_TPR0_TRC_OFFSET | + 3 << 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 | + 25 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET | + 23 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET); + + ddr2->tpr2 = (7 << ATMEL_MPDDRC_TPR2_TFAW_OFFSET | + 2 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET | + 3 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET | + 2 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET | + 8 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET); +} + +void mem_init(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + struct atmel_mpddr ddr2; + + ddr2_conf(&ddr2); + + /* enable MPDDR clock */ + at91_periph_clk_enable(ATMEL_ID_MPDDRC); + writel(0x4, &pmc->scer); + + /* DDRAM2 Controller initialize */ + ddr2_init(ATMEL_BASE_DDRCS, &ddr2); +} + +void at91_pmc_init(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + u32 tmp; + + tmp = AT91_PMC_PLLAR_29 | + AT91_PMC_PLLXR_PLLCOUNT(0x3f) | + AT91_PMC_PLLXR_MUL(87) | + AT91_PMC_PLLXR_DIV(1); + at91_plla_init(tmp); + + writel(0x0 << 8, &pmc->pllicpr); + + tmp = AT91_PMC_MCKR_H32MXDIV | + AT91_PMC_MCKR_PLLADIV_2 | + AT91_PMC_MCKR_MDIV_3 | + AT91_PMC_MCKR_CSS_PLLA; + at91_mck_init(tmp); +} +#endif |