| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2014 Rockchip Inc. |
| * |
| * 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; version 2 of the License. |
| * |
| * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <types.h> |
| #include <armv7.h> |
| #include <cbfs.h> |
| #include <console/console.h> |
| #include <arch/stages.h> |
| #include <cbmem.h> |
| #include <delay.h> |
| #include <timestamp.h> |
| #include <arch/cache.h> |
| #include <arch/exception.h> |
| |
| void main(void) |
| { |
| void *entry; |
| |
| console_init(); |
| |
| /* used for MMU and CBMEM setup, in MB */ |
| u32 dram_start = (CONFIG_SYS_SDRAM_BASE >> 20); |
| u32 dram_size = CONFIG_DRAM_SIZE_MB; |
| u32 dram_end = dram_start + dram_size; |
| mmu_init(); |
| /* Device memory below DRAM is uncached. */ |
| mmu_config_range(0, dram_start, DCACHE_OFF); |
| /* DRAM is cached. */ |
| mmu_config_range(dram_start, dram_size, DCACHE_WRITEBACK); |
| /* A window for DMA is uncached. */ |
| mmu_config_range(CONFIG_DRAM_DMA_START >> 20, |
| CONFIG_DRAM_DMA_SIZE >> 20, DCACHE_OFF); |
| /* The space above DRAM is uncached. */ |
| if (dram_end < 4096) |
| mmu_config_range(dram_end, 4096 - dram_end, DCACHE_OFF); |
| mmu_disable_range(0, 1); |
| dcache_mmu_enable(); |
| |
| cbmem_initialize_empty(); |
| |
| entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, "fallback/ramstage"); |
| stage_exit(entry); |
| } |