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Diffstat (limited to 'board/in-circuit/grasshopper/grasshopper.c')
| -rw-r--r-- | board/in-circuit/grasshopper/grasshopper.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/board/in-circuit/grasshopper/grasshopper.c b/board/in-circuit/grasshopper/grasshopper.c new file mode 100644 index 000000000..475a759b7 --- /dev/null +++ b/board/in-circuit/grasshopper/grasshopper.c @@ -0,0 +1,112 @@ +/* + * Copyright (C) 2011 + * Corscience GmbH & Co.KG, Andreas Bießmann <biessmann@corscience.de> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> + +#include <asm/io.h> +#include <asm/sdram.h> +#include <asm/arch/clk.h> +#include <asm/arch/hmatrix.h> +#include <asm/arch/mmu.h> +#include <asm/arch/portmux.h> +#include <netdev.h> + +DECLARE_GLOBAL_DATA_PTR; + +struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = { + { + .virt_pgno = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT, + .nr_pages = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT, + .phys = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT) + | MMU_VMR_CACHE_NONE, + }, { + .virt_pgno = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT, + .nr_pages = EBI_SDRAM_SIZE >> PAGE_SHIFT, + .phys = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT) + | MMU_VMR_CACHE_WRBACK, + }, +}; + +static const struct sdram_config sdram_config = { + /* Dual MT48LC16M16A2-7E (or equal) */ + .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, +}; + +int board_early_init_f(void) +{ + /* Enable SDRAM in the EBI mux */ + hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE)); + + portmux_enable_ebi(SDRAM_DATA_32BIT, 23, 0, PORTMUX_DRIVE_HIGH); + portmux_enable_usart0(PORTMUX_DRIVE_MIN); + portmux_enable_usart1(PORTMUX_DRIVE_MIN); +#if defined(CONFIG_MACB) + portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_LOW); +#endif + + return 0; +} + +phys_size_t initdram(int board_type) +{ + unsigned long expected_size; + unsigned long actual_size; + void *sdram_base; + + sdram_base = uncached(EBI_SDRAM_BASE); + + expected_size = sdram_init(sdram_base, &sdram_config); + actual_size = get_ram_size(sdram_base, expected_size); + + if (expected_size != actual_size) + printf("Warning: Only %lu of %lu MiB SDRAM is working\n", + actual_size >> 20, expected_size >> 20); + + return actual_size; +} + +int board_early_init_r(void) +{ + gd->bd->bi_phy_id[0] = 0x00; + return 0; +} + +#ifdef CONFIG_CMD_NET +int board_eth_init(bd_t *bi) +{ + macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0, bi->bi_phy_id[0]); + return 0; +} +#endif +/* vim: set noet ts=8: */ |