/* * Copyright (C) 2012 Alexey Galakhov * * 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 * version 2 as published by the Free Software Foundation. * * 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 <config.h> #include <common.h> #include <init.h> #include <io.h> #include <sizes.h> #include <asm/barebox-arm.h> #include <asm/barebox-arm-head.h> #include <asm/sections.h> #include <mach/s3c-iomap.h> #include <mach/s3c-clocks.h> #include <mach/s3c-generic.h> /* * iROM boot from MMC * TODO: replace this by native boot */ #define ADDR_V210_SDMMC_BASE 0xD0037488 #define ADDR_CopySDMMCtoMem 0xD0037F98 int __bare_init s5p_irom_load_mmc(void *dest, uint32_t start_block, uint16_t block_count) { typedef uint32_t (*func_t) (int32_t, uint32_t, uint16_t, uint32_t*, int8_t); uint32_t chbase = readl(ADDR_V210_SDMMC_BASE); func_t func = (func_t)readl(ADDR_CopySDMMCtoMem); int chan = (chbase - 0xEB000000) >> 20; if (chan != 0 && chan != 2) return 0; return func(chan, start_block, block_count, (uint32_t*)dest, 0) ? 1 : 0; } void __bare_init barebox_arm_reset_vector(void) { uint32_t r; arm_cpu_lowlevel_init(); #ifdef CONFIG_S3C_PLL_INIT s5p_init_pll(); #endif if (get_pc() < 0xD0000000) /* Are we running from iRAM? */ /* No, we don't. */ barebox_arm_entry(S3C_SDRAM_BASE, SZ_64M, 0); s5p_init_dram_bank_ddr2(S5P_DMC0_BASE, 0x20E00323, 0, 0); if (! s5p_irom_load_mmc((void*)TEXT_BASE - 16, 1, (ld_var(_barebox_image_size) + 16 + 511) / 512)) while (1) { } /* hang */ /* Jump to SDRAM */ r = (unsigned)TEXT_BASE; __asm__ __volatile__("mov pc, %0" : : "r"(r)); while (1) { } /* hang */ }