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| author | Bo Shen <voice.shen@atmel.com> | 2015-03-27 14:23:34 +0800 |
|---|---|---|
| committer | Andreas Bießmann <andreas.devel@googlemail.com> | 2015-04-01 01:04:30 +0200 |
| commit | 41d41a93fb5600b0cbfdbfae88b0d8403bd650b7 (patch) | |
| tree | 5dc3c6730d76e8c656d848b2063df2f00751f69e /board | |
| parent | 72cb3b6b54e99959f84456e448aa3db9f776f8a5 (diff) | |
| download | u-boot-imx-41d41a93fb5600b0cbfdbfae88b0d8403bd650b7.zip u-boot-imx-41d41a93fb5600b0cbfdbfae88b0d8403bd650b7.tar.gz u-boot-imx-41d41a93fb5600b0cbfdbfae88b0d8403bd650b7.tar.bz2 | |
ARM: atmel: at91sam9m10g45ek: enable spl support
Supports boot up from NAND flash with software ECC eanbled.
And supports boot up from SD/MMC card with FAT file system.
As the boot from SD/MMC card with FAT file system, the BSS
segment is too big to fit into SRAM, so, use the lds to put
it into SDRAM.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/atmel/at91sam9m10g45ek/at91sam9m10g45ek.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/board/atmel/at91sam9m10g45ek/at91sam9m10g45ek.c b/board/atmel/at91sam9m10g45ek/at91sam9m10g45ek.c index b807ef9..4289179 100644 --- a/board/atmel/at91sam9m10g45ek/at91sam9m10g45ek.c +++ b/board/atmel/at91sam9m10g45ek/at91sam9m10g45ek.c @@ -8,6 +8,7 @@ #include <common.h> #include <asm/io.h> +#include <asm/arch/clk.h> #include <asm/arch/at91sam9g45_matrix.h> #include <asm/arch/at91sam9_smc.h> #include <asm/arch/at91_common.h> @@ -15,6 +16,7 @@ #include <asm/arch/gpio.h> #include <asm/arch/clk.h> #include <lcd.h> +#include <linux/mtd/nand.h> #include <atmel_lcdc.h> #include <atmel_mci.h> #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB) @@ -71,6 +73,84 @@ void at91sam9m10g45ek_nand_hw_init(void) } #endif +#if defined(CONFIG_SPL_BUILD) +#include <spl.h> +#include <nand.h> + +void at91_spl_board_init(void) +{ + /* + * On the at91sam9m10g45ek board, the chip wm9711 stays in the + * test mode, so it needs do some action to exit test mode. + */ + at91_periph_clk_enable(ATMEL_ID_PIODE); + at91_set_gpio_output(AT91_PIN_PD7, 0); + at91_set_gpio_output(AT91_PIN_PD8, 0); + at91_set_pio_pullup(AT91_PIO_PORTD, 7, 1); + at91_set_pio_pullup(AT91_PIO_PORTD, 8, 1); + +#ifdef CONFIG_SYS_USE_MMC + at91_mci_hw_init(); +#elif CONFIG_SYS_USE_NANDFLASH + at91sam9m10g45ek_nand_hw_init(); +#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_14 | + ATMEL_MPDDRC_CR_DQMS_SHARED | + ATMEL_MPDDRC_CR_CAS_DDR_CAS3); + + ddr2->rtr = 0x24b; + + ddr2->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET |/* 6*7.5 = 45 ns */ + 2 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET |/* 2*7.5 = 15 ns */ + 2 << ATMEL_MPDDRC_TPR0_TWR_OFFSET | /* 2*7.5 = 15 ns */ + 8 << ATMEL_MPDDRC_TPR0_TRC_OFFSET | /* 8*7.5 = 60 ns */ + 2 << ATMEL_MPDDRC_TPR0_TRP_OFFSET | /* 2*7.5 = 15 ns */ + 1 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET | /* 1*7.5= 7.5 ns*/ + 1 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET | /* 1 clk cycle */ + 2 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET); /* 2 clk cycles */ + + ddr2->tpr1 = (2 << ATMEL_MPDDRC_TPR1_TXP_OFFSET | /* 2*7.5 = 15 ns */ + 200 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET | + 16 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET | + 14 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET); + + ddr2->tpr2 = (1 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET | + 0 << 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 *mat = (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(&mat->ebicsa); + csa |= AT91_MATRIX_EBI_CS1A_SDRAMC; + csa &= ~AT91_MATRIX_EBI_VDDIOMSEL_3_3V; + writel(csa, &mat->ebicsa); + + /* DDRAM2 Controller initialize */ + ddr2_init(ATMEL_BASE_CS6, &ddr2); +} +#endif + #ifdef CONFIG_CMD_USB static void at91sam9m10g45ek_usb_hw_init(void) { |