diff options
| author | Wenyou Yang | 2016-02-01 18:18:21 +0800 |
|---|---|---|
| committer | Andreas Bießmann | 2016-02-02 11:49:13 +0100 |
| commit | 37dadbca0c8b9bff00f892fd87a978cbe0a98b3a (patch) | |
| tree | 5d1ef0331ab89ab5934c7f8b06d812ef09d29627 /board/atmel/sama5d2_xplained | |
| parent | 4245701ef58c9c7c1dbccc8fa2f1bdd248b97b8b (diff) | |
board: atmel: sama5d2_xplained: add SPL support
The sama5d2 Xplained SPL supports the boot medias: spi flash
and SD Card.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'board/atmel/sama5d2_xplained')
| -rw-r--r-- | board/atmel/sama5d2_xplained/sama5d2_xplained.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/board/atmel/sama5d2_xplained/sama5d2_xplained.c b/board/atmel/sama5d2_xplained/sama5d2_xplained.c index 0b3397fa090..8ed01ddbea8 100644 --- a/board/atmel/sama5d2_xplained/sama5d2_xplained.c +++ b/board/atmel/sama5d2_xplained/sama5d2_xplained.c @@ -17,6 +17,7 @@ #include <asm/arch/at91_common.h> #include <asm/arch/at91_pmc.h> #include <asm/arch/atmel_pio4.h> +#include <asm/arch/atmel_mpddrc.h> #include <asm/arch/atmel_usba_udc.h> #include <asm/arch/atmel_sdhci.h> #include <asm/arch/clk.h> @@ -281,3 +282,105 @@ int board_eth_init(bd_t *bis) return rc; } + +/* SPL */ +#ifdef CONFIG_SPL_BUILD +void spl_board_init(void) +{ +#ifdef CONFIG_SYS_USE_SERIALFLASH + board_spi0_hw_init(); +#endif +#ifdef CONFIG_ATMEL_SDHCI +#ifdef CONFIG_ATMEL_SDHCI0 + board_sdhci0_hw_init(); +#endif +#ifdef CONFIG_ATMEL_SDHCI1 + board_sdhci1_hw_init(); +#endif +#endif +} + +static void ddrc_conf(struct atmel_mpddrc_config *ddrc) +{ + ddrc->md = (ATMEL_MPDDRC_MD_DBW_32_BITS | ATMEL_MPDDRC_MD_DDR3_SDRAM); + + ddrc->cr = (ATMEL_MPDDRC_CR_NC_COL_10 | + ATMEL_MPDDRC_CR_NR_ROW_14 | + ATMEL_MPDDRC_CR_CAS_DDR_CAS5 | + ATMEL_MPDDRC_CR_DIC_DS | + ATMEL_MPDDRC_CR_DIS_DLL | + ATMEL_MPDDRC_CR_NB_8BANKS | + ATMEL_MPDDRC_CR_DECOD_INTERLEAVED | + ATMEL_MPDDRC_CR_UNAL_SUPPORTED); + + ddrc->rtr = 0x511; + + ddrc->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET | + 3 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET | + 4 << ATMEL_MPDDRC_TPR0_TWR_OFFSET | + 9 << ATMEL_MPDDRC_TPR0_TRC_OFFSET | + 3 << ATMEL_MPDDRC_TPR0_TRP_OFFSET | + 4 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET | + 4 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET | + 4 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET); + + ddrc->tpr1 = (27 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET | + 29 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET | + 0 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET | + 3 << ATMEL_MPDDRC_TPR1_TXP_OFFSET); + + ddrc->tpr2 = (0 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET | + 0 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET | + 0 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET | + 4 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET | + 7 << ATMEL_MPDDRC_TPR2_TFAW_OFFSET); +} + +void mem_init(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + struct atmel_mpddr *mpddrc = (struct atmel_mpddr *)ATMEL_BASE_MPDDRC; + struct atmel_mpddrc_config ddrc_config; + u32 reg; + + ddrc_conf(&ddrc_config); + + at91_periph_clk_enable(ATMEL_ID_MPDDRC); + writel(AT91_PMC_DDR, &pmc->scer); + + reg = readl(&mpddrc->io_calibr); + reg &= ~ATMEL_MPDDRC_IO_CALIBR_RDIV; + reg |= ATMEL_MPDDRC_IO_CALIBR_DDR3_RZQ_55; + reg &= ~ATMEL_MPDDRC_IO_CALIBR_TZQIO; + reg |= ATMEL_MPDDRC_IO_CALIBR_TZQIO_(100); + writel(reg, &mpddrc->io_calibr); + + writel(ATMEL_MPDDRC_RD_DATA_PATH_SHIFT_TWO_CYCLE, + &mpddrc->rd_data_path); + + ddr3_init(ATMEL_BASE_MPDDRC, ATMEL_BASE_DDRCS, &ddrc_config); + + writel(0x3, &mpddrc->cal_mr4); + writel(64, &mpddrc->tim_cal); +} + +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(82) | + 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 |