From b9944a77f909e343f930dcbcc597224e65dfcca9 Mon Sep 17 00:00:00 2001 From: Dirk Eibach Date: Wed, 26 Jun 2013 15:55:17 +0200 Subject: mpc85xx: Add gdsys ControlCenter Digital board The gdsys ControlCenter Digital board is based on a Freescale P1022 QorIQ SOC. It boots from SPI-Flash but can be configured to boot from SD-card for factory programming and testing. On board peripherals include: - 2x GbE - Lattice ECP3 FPGA connected via PCIe - mSATA RAID1 - USB host - DisplayPort video output - Atmel TPM Signed-off-by: Dirk Eibach Signed-off-by: Reinhard Pfau Signed-off-by: Andy Fleming --- board/gdsys/p1022/sdhc_boot.c | 63 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 board/gdsys/p1022/sdhc_boot.c (limited to 'board/gdsys/p1022/sdhc_boot.c') diff --git a/board/gdsys/p1022/sdhc_boot.c b/board/gdsys/p1022/sdhc_boot.c new file mode 100644 index 0000000000..e4323181fc --- /dev/null +++ b/board/gdsys/p1022/sdhc_boot.c @@ -0,0 +1,63 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. + * + * 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 +#include +#include + +/* + * The environment variables are written to just after the u-boot image + * on SDCard, so we must read the MBR to get the start address and code + * length of the u-boot image, then calculate the address of the env. + */ +#define ESDHC_BOOT_IMAGE_SIZE 0x48 +#define ESDHC_BOOT_IMAGE_ADDR 0x50 + +int mmc_get_env_addr(struct mmc *mmc, u32 *env_addr) +{ + u8 *tmp_buf; + u32 blklen, code_offset, code_len, n; + + blklen = mmc->read_bl_len; + tmp_buf = malloc(blklen); + if (!tmp_buf) + return 1; + + /* read out the first block, get the config data information */ + n = mmc->block_dev.block_read(mmc->block_dev.dev, 0, 1, tmp_buf); + if (!n) { + free(tmp_buf); + return 1; + } + + /* Get the Source Address, from offset 0x50 */ + code_offset = *(u32 *)(tmp_buf + ESDHC_BOOT_IMAGE_ADDR); + + /* Get the code size from offset 0x48 */ + code_len = *(u32 *)(tmp_buf + ESDHC_BOOT_IMAGE_SIZE); + + *env_addr = code_offset + code_len; + + free(tmp_buf); + + return 0; +} -- cgit v1.2.3