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powerpc/85xx: Enable eSDHC boot support on P2020 DS 

We implement our own mmc_get_env_addr since 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.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Zhao Chenhui <b35336@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Jerry Huang 2011-01-24 17:09:54 +00:00 committed by Kumar Gala
parent 97039ab98c
commit 1ac63e4094
5 changed files with 103 additions and 1 deletions
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1
board/freescale/common/Makefile
View File

@ -36,6 +36,7 @@ COBJS-$(CONFIG_FSL_NGPIXIS) += ngpixis.o
COBJS-$(CONFIG_PQ_MDS_PIB) += pq-mds-pib.o
COBJS-$(CONFIG_ID_EEPROM) += sys_eeprom.o
COBJS-$(CONFIG_FSL_SGMII_RISER) += sgmii_riser.o
COBJS-$(CONFIG_ENV_IS_IN_MMC) += sdhc_boot.o
COBJS-$(CONFIG_MPC8541CDS) += cds_pci_ft.o
COBJS-$(CONFIG_MPC8548CDS) += cds_pci_ft.o

64
board/freescale/common/sdhc_boot.c Normal file
View File

@ -0,0 +1,64 @@
/*
* 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 <common.h>
#include <mmc.h>
#include <malloc.h>
/*
* 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;
}

13
board/freescale/p2020ds/tlb.c
View File

@ -1,5 +1,5 @@
/*
* Copyright 2008-2009 Freescale Semiconductor, Inc.
* Copyright 2008-2011 Freescale Semiconductor, Inc.
*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
@ -90,6 +90,17 @@ struct fsl_e_tlb_entry tlb_table[] = {
SET_TLB_ENTRY(1, PIXIS_BASE, PIXIS_BASE_PHYS,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
0, 8, BOOKE_PAGESZ_4K, 1),
#if defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SYS_INIT_L2_ADDR)
/* *I*G - L2SRAM */
SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L2_ADDR, CONFIG_SYS_INIT_L2_ADDR_PHYS,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
0, 9, BOOKE_PAGESZ_256K, 1),
SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L2_ADDR + 0x40000,
CONFIG_SYS_INIT_L2_ADDR_PHYS + 0x40000,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
0, 10, BOOKE_PAGESZ_256K, 1),
#endif
};
int num_tlb_entries = ARRAY_SIZE(tlb_table);

1
boards.cfg
View File

@ -534,6 +534,7 @@ P2010RDB_SPIFLASH powerpc mpc85xx p1_p2_rdb freesca
P2020DS powerpc mpc85xx p2020ds freescale
P2020DS_36BIT powerpc mpc85xx p2020ds freescale - P2020DS:36BIT
P2020DS_DDR2 powerpc mpc85xx p2020ds freescale - P2020DS:DDR2
P2020DS_SDCARD powerpc mpc85xx p2020ds freescale - P2020DS:SDCARD
P2020RDB powerpc mpc85xx p1_p2_rdb freescale - P1_P2_RDB:P2020RDB
P2020RDB_36BIT powerpc mpc85xx p1_p2_rdb freescale - P1_P2_RDB:P2020RDB,36BIT
P2020RDB_36BIT_SDCARD powerpc mpc85xx p1_p2_rdb freescale - P1_P2_RDB:P2020RDB,36BIT,SDCARD

25
include/configs/P2020DS.h
View File

@ -33,6 +33,13 @@
#define CONFIG_PHYS_64BIT
#endif
#ifdef CONFIG_SDCARD
#define CONFIG_SYS_RAMBOOT
#define CONFIG_SYS_EXTRA_ENV_RELOC
#define CONFIG_SYS_TEXT_BASE 0xf8f80000
#define CONFIG_RESET_VECTOR_ADDRESS 0xf8fffffc
#endif
/* High Level Configuration Options */
#define CONFIG_BOOKE 1 /* BOOKE */
#define CONFIG_E500 1 /* BOOKE e500 family */
@ -92,6 +99,18 @@
#define CONFIG_SYS_MEMTEST_END 0x00400000
#define CONFIG_PANIC_HANG /* do not reset board on panic */
/*
* Config the L2 Cache
*/
#define CONFIG_SYS_INIT_L2_ADDR 0xf8f80000
#ifdef CONFIG_PHYS_64BIT
#define CONFIG_SYS_INIT_L2_ADDR_PHYS 0xff8f80000ull
#else
#define CONFIG_SYS_INIT_L2_ADDR_PHYS CONFIG_SYS_INIT_L2_ADDR
#endif
#define CONFIG_SYS_L2_SIZE (512 << 10)
#define CONFIG_SYS_INIT_L2_END (CONFIG_SYS_INIT_L2_ADDR + CONFIG_SYS_L2_SIZE)
/*
* Base addresses -- Note these are effective addresses where the
* actual resources get mapped (not physical addresses)
@ -571,6 +590,11 @@
/*
* Environment
*/
#if defined(CONFIG_SDCARD)
#define CONFIG_ENV_IS_IN_MMC
#define CONFIG_ENV_SIZE 0x2000
#define CONFIG_SYS_MMC_ENV_DEV 0
#else
#define CONFIG_ENV_IS_IN_FLASH 1
#if CONFIG_SYS_MONITOR_BASE > 0xfff80000
#define CONFIG_ENV_ADDR 0xfff80000
@ -579,6 +603,7 @@
#endif
#define CONFIG_ENV_SIZE 0x2000
#define CONFIG_ENV_SECT_SIZE 0x20000 /* 128K (one sector) */
#endif
#define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
#define CONFIG_SYS_LOADS_BAUD_CHANGE 1 /* allow baudrate change */