diff options
Diffstat (limited to 'board/atmel/atstk1000/atstk1000.c')
| -rw-r--r-- | board/atmel/atstk1000/atstk1000.c | 56 |
1 files changed, 49 insertions, 7 deletions
diff --git a/board/atmel/atstk1000/atstk1000.c b/board/atmel/atstk1000/atstk1000.c index 28f64c4..6371e2d 100644 --- a/board/atmel/atstk1000/atstk1000.c +++ b/board/atmel/atstk1000/atstk1000.c @@ -25,13 +25,39 @@ #include <asm/sdram.h> #include <asm/arch/clk.h> #include <asm/arch/gpio.h> -#include <asm/arch/hmatrix2.h> +#include <asm/arch/hmatrix.h> DECLARE_GLOBAL_DATA_PTR; -static const struct sdram_info sdram = { - .phys_addr = CFG_SDRAM_BASE, +static const struct sdram_config sdram_config = { +#if defined(CONFIG_ATSTK1006) + /* Dual MT48LC16M16A2-7E (64 MB) on daughterboard */ + .data_bits = SDRAM_DATA_32BIT, + .row_bits = 13, + .col_bits = 9, + .bank_bits = 2, + .cas = 2, + .twr = 2, + .trc = 7, + .trp = 2, + .trcd = 2, + .tras = 4, + .txsr = 7, + /* 7.81 us */ + .refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000, +#else + /* MT48LC2M32B2P-5 (8 MB) on motherboard */ +#ifdef CONFIG_ATSTK1004 + .data_bits = SDRAM_DATA_16BIT, +#else + .data_bits = SDRAM_DATA_32BIT, +#endif +#ifdef CONFIG_ATSTK1000_16MB_SDRAM + /* MT48LC4M32B2P-6 (16 MB) on mod'ed motherboard */ + .row_bits = 12, +#else .row_bits = 11, +#endif .col_bits = 8, .bank_bits = 2, .cas = 3, @@ -43,12 +69,13 @@ static const struct sdram_info sdram = { .txsr = 5, /* 15.6 us */ .refresh_period = (156 * (SDRAMC_BUS_HZ / 1000)) / 10000, +#endif }; int board_early_init_f(void) { - /* Set the SDRAM_ENABLE bit in the HEBI SFR */ - hmatrix2_writel(SFR4, 1 << 1); + /* Enable SDRAM in the EBI mux */ + hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE)); gpio_enable_ebi(); gpio_enable_usart1(); @@ -63,9 +90,24 @@ int board_early_init_f(void) return 0; } -long int initdram(int board_type) +phys_size_t initdram(int board_type) { - return sdram_init(&sdram); + unsigned long expected_size; + unsigned long actual_size; + void *sdram_base; + + sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE); + + expected_size = sdram_init(sdram_base, &sdram_config); + actual_size = get_ram_size(sdram_base, expected_size); + + unmap_physmem(sdram_base, EBI_SDRAM_SIZE); + + if (expected_size != actual_size) + printf("Warning: Only %u of %u MiB SDRAM is working\n", + actual_size >> 20, expected_size >> 20); + + return actual_size; } void board_init_info(void) |