diff options
author | Heiko Schocher <hs@denx.de> | 2014-10-31 07:31:06 (GMT) |
---|---|---|
committer | Tom Rini <trini@ti.com> | 2014-11-17 13:47:18 (GMT) |
commit | 5b15fd980bfcb49e2b9bc711339cbd6e8731aef8 (patch) | |
tree | 890ea1a06a6d79e8e0d54f8cfd302773522aed84 /board/siemens/corvus | |
parent | 237e3793fbe4227105dee586d95942c0ac3f6b62 (diff) | |
download | u-boot-5b15fd980bfcb49e2b9bc711339cbd6e8731aef8.tar.xz |
arm, spl, at91: add spl support for the corvus board
replaces the at91bootstrap code with SPL code.
make the spl image with:
./tools/mkimage -T atmelimage -d spl/u-boot-spl.bin spl/boot.bin
this writes the length of the spl image into the 6th
execption vector. This is needed from the ROM bootloader.
Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Bo Shen <voice.shen@atmel.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'board/siemens/corvus')
-rw-r--r-- | board/siemens/corvus/board.c | 109 |
1 files changed, 97 insertions, 12 deletions
diff --git a/board/siemens/corvus/board.c b/board/siemens/corvus/board.c index f1e93ef..0a11540 100644 --- a/board/siemens/corvus/board.c +++ b/board/siemens/corvus/board.c @@ -31,12 +31,10 @@ DECLARE_GLOBAL_DATA_PTR; -#ifdef CONFIG_CMD_NAND static void corvus_nand_hw_init(void) { struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC; struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX; - struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; unsigned long csa; /* Enable CS3 */ @@ -63,22 +61,111 @@ static void corvus_nand_hw_init(void) AT91_SMC_MODE_TDF_CYCLE(3), &smc->cs[3].mode); - writel(1 << ATMEL_ID_PIOC, &pmc->pcer); - - /* Configure RDY/BSY */ - at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1); + at91_periph_clk_enable(ATMEL_ID_PIOC); /* Enable NandFlash */ at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1); } + +#if defined(CONFIG_SPL_BUILD) +#include <spl.h> +#include <nand.h> + +void at91_spl_board_init(void) +{ + /* + * For on the sam9m10g45ek board, the chip wm9711 stay in the test + * mode, so it need do some action to exit mode. + */ + 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); + at91_set_pio_pullup(AT91_PIO_PORTA, 12, 1); + at91_set_pio_pullup(AT91_PIO_PORTA, 13, 1); + at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1); + + corvus_nand_hw_init(); + + /* Configure recovery button PINs */ + at91_set_gpio_input(AT91_PIN_PB7, 1); + + /* check if button is pressed */ + if (at91_get_gpio_value(AT91_PIN_PB7) == 0) { + u32 boot_device; + + debug("Recovery button pressed\n"); + boot_device = spl_boot_device(); + switch (boot_device) { +#ifdef CONFIG_SPL_NAND_SUPPORT + case BOOT_DEVICE_NAND: + nand_init(); + spl_nand_erase_one(0, 0); + break; #endif + } + } +} -#ifdef CONFIG_CMD_USB -static void taurus_usb_hw_init(void) +#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_DIC_DS | + 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 = 75 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); - writel(1 << ATMEL_ID_PIODE, &pmc->pcer); + /* 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 taurus_usb_hw_init(void) +{ + at91_periph_clk_enable(ATMEL_ID_PIODE); at91_set_gpio_output(AT91_PIN_PD1, 0); at91_set_gpio_output(AT91_PIN_PD3, 0); @@ -88,10 +175,8 @@ static void taurus_usb_hw_init(void) #ifdef CONFIG_MACB static void corvus_macb_hw_init(void) { - struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; - /* Enable clock */ - writel(1 << ATMEL_ID_EMAC, &pmc->pcer); + at91_periph_clk_enable(ATMEL_ID_EMAC); /* * Disable pull-up on: |