Primary Bootloader (before u-boot) in sysmoBTSv2
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/*
* norboot.c - NOR boot mode functions
*
* Copyright (C) 2008 Hugo Villeneuve <hugo@hugovil.com>
*
* Based on TI DaVinci Flash and Boot Utilities, original copyright follows:
* Copyright 2008 Texas Instruments, Inc. <www.ti.com>
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "common.h"
#include "nor.h"
#include "util.h"
#include "uart.h"
extern NOR_INFO gNorInfo;
/* Function to find out where the Application is and copy to DRAM */
int
nor_copy(uint32_t *jump_entry_point)
{
volatile struct nor_boot_t *hdr = 0;
volatile uint32_t *appStartAddr = 0;
volatile uint32_t count = 0;
volatile uint32_t *ramPtr = 0;
uint32_t blkSize, blkAddress;
if (NOR_Init() != E_PASS)
return E_FAIL;
DiscoverBlockInfo((gNorInfo.flashBase + UBL_IMAGE_SIZE), &blkSize,
&blkAddress);
hdr = (volatile struct nor_boot_t *) (blkAddress + blkSize);
/* Check for valid magic number. */
if ((hdr->magicNum & 0xFFFFFF00) != MAGIC_NUMBER_VALID) {
log_fail("No valid header found");
return E_FAIL;
}
/* Set the source address for copy */
appStartAddr = (uint32_t *)(((uint8_t*) hdr) + sizeof(struct nor_boot_t));
if (hdr->magicNum == UBL_MAGIC_BIN_IMG) {
log_fail("Unsupported image format");
return E_FAIL;
}
ramPtr = (uint32_t *) hdr->ldAddress;
/* Copy data to RAM */
memcpy(ramPtr, appStartAddr, hdr->appSize);
/* Application was read correctly, so set entrypoint */
*jump_entry_point = hdr->entryPoint;
return E_PASS;
}