79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
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* Copyright (C) 2012 Alexey Galakhov
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <config.h>
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#include <common.h>
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#include <init.h>
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#include <io.h>
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#include <sizes.h>
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#include <asm/barebox-arm.h>
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#include <asm/barebox-arm-head.h>
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#include <asm/sections.h>
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#include <mach/s3c-iomap.h>
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#include <mach/s3c-clocks.h>
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#include <mach/s3c-generic.h>
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/*
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* iROM boot from MMC
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* TODO: replace this by native boot
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*/
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#define ADDR_V210_SDMMC_BASE 0xD0037488
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#define ADDR_CopySDMMCtoMem 0xD0037F98
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int __bare_init s5p_irom_load_mmc(void *dest, uint32_t start_block, uint16_t block_count)
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{
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typedef uint32_t (*func_t) (int32_t, uint32_t, uint16_t, uint32_t*, int8_t);
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uint32_t chbase = readl(ADDR_V210_SDMMC_BASE);
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func_t func = (func_t)readl(ADDR_CopySDMMCtoMem);
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int chan = (chbase - 0xEB000000) >> 20;
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if (chan != 0 && chan != 2)
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return 0;
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return func(chan, start_block, block_count, (uint32_t*)dest, 0) ? 1 : 0;
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}
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void __bare_init barebox_arm_reset_vector(void)
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{
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uint32_t r;
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arm_cpu_lowlevel_init();
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#ifdef CONFIG_S3C_PLL_INIT
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s5p_init_pll();
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#endif
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if (get_pc() < 0xD0000000) /* Are we running from iRAM? */
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/* No, we don't. */
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barebox_arm_entry(S3C_SDRAM_BASE, SZ_64M, 0);
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s5p_init_dram_bank_ddr2(S5P_DMC0_BASE, 0x20E00323, 0, 0);
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if (! s5p_irom_load_mmc((void*)TEXT_BASE - 16, 1,
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(ld_var(_barebox_image_size) + 16 + 511) / 512))
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while (1) { } /* hang */
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/* Jump to SDRAM */
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r = (unsigned)TEXT_BASE;
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__asm__ __volatile__("mov pc, %0" : : "r"(r));
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while (1) { } /* hang */
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}
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