SVN-Revision: 7089master
Hamish Guthrie
18 years ago
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afcfa1a55c
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e22255fceb
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/*
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* $Id: at91part.c 6948 2007-04-15 04:01:45Z hcg $ |
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*
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* Copyright (C) 2007 OpenWrt.org |
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*
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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* Atmel AT91 flash partition table. (Modified by Hamish Guthrie). |
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* Based on ar7 map by Felix Fietkau. |
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* |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/slab.h> |
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#include <linux/mtd/mtd.h> |
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#include <linux/mtd/partitions.h> |
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#include <linux/bootmem.h> |
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#include <linux/squashfs_fs.h> |
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static struct mtd_partition at91_parts[6]; |
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static int create_mtd_partitions(struct mtd_info *master,
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struct mtd_partition **pparts,
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unsigned long origin) |
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{ |
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unsigned int offset, len; |
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unsigned int pre_size = 0x42000, root_max = 0x362400; |
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unsigned char buf[512]; |
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struct squashfs_super_block *sb = (struct squashfs_super_block *) buf; |
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printk("Parsing AT91 partition map...\n"); |
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at91_parts[0].name = "loaders"; |
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at91_parts[0].offset = 0; |
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at91_parts[0].size = 0x21000; |
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at91_parts[0].mask_flags = MTD_WRITEABLE; |
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at91_parts[1].name = "ubparams"; |
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at91_parts[1].offset = 0x21000; |
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at91_parts[1].size = 0x8400; |
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at91_parts[1].mask_flags = 0; |
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at91_parts[2].name = "kernel"; |
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at91_parts[2].offset = pre_size; |
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at91_parts[2].size = 0; |
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at91_parts[2].mask_flags = 0; |
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at91_parts[3].name = "rootfs"; |
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at91_parts[3].offset = 0; |
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at91_parts[3].size = 0; |
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at91_parts[3].mask_flags = 0; |
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for(offset = pre_size; offset < root_max; offset += master->erasesize) { |
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memset(&buf, 0xe5, sizeof(buf)); |
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if (master->read(master, offset, sizeof(buf), &len, buf) || len != sizeof(buf)) |
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break; |
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if (*((__u32 *) buf) == SQUASHFS_MAGIC) { |
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printk(KERN_INFO "%s: Filesystem type: squashfs, size=0x%x\n", |
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master->name, (u32) sb->bytes_used); |
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at91_parts[3].size = sb->bytes_used; |
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at91_parts[3].offset = offset; |
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len = at91_parts[3].offset + at91_parts[3].size; |
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len = ((len / (master->erasesize * 8)) + 1) * master->erasesize * 8; |
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at91_parts[3].size = len - at91_parts[3].offset; |
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at91_parts[2].size = offset - at91_parts[2].offset; |
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break; |
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} |
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} |
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if (at91_parts[3].size == 0) { |
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printk(KERN_NOTICE "%s: Couldn't find root filesystem\n", master->name); |
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return -1; |
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} |
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at91_parts[4].name = "rootfs_data"; |
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at91_parts[4].offset = root_max; |
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at91_parts[4].size = master->size - root_max; |
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at91_parts[4].mask_flags = 0; |
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at91_parts[5].name = "complete"; |
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at91_parts[5].offset = 0; |
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at91_parts[5].size = master->size; |
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at91_parts[5].mask_flags = 0; |
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*pparts = at91_parts; |
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return 6; |
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} |
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static struct mtd_part_parser at91_parser = { |
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.owner = THIS_MODULE, |
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.parse_fn = create_mtd_partitions, |
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.name = "at91part", |
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}; |
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static int __init at91_parser_init(void) |
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{ |
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return register_mtd_parser(&at91_parser); |
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} |
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module_init(at91_parser_init); |
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MODULE_LICENSE("GPL"); |
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MODULE_AUTHOR("Felix Fietkau, Eugene Konev, Hamish Guthrie"); |
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MODULE_DESCRIPTION("MTD partitioning for Atmel at91"); |
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@ -0,0 +1,19 @@ |
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diff -urN u-boot-1.1.4.old/tools/ubparams.c u-boot-1.1.4/tools/ubparams.c
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--- u-boot-1.1.4.old/tools/ubparams.c 2007-05-01 13:20:17.000000000 +0200
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+++ u-boot-1.1.4/tools/ubparams.c 2007-05-04 10:13:34.000000000 +0200
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@@ -37,12 +37,11 @@
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"stdin=serial\0"
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"stdout=serial\0"
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"stderr=serial\0"
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- "partitions=mtdparts=AT45DB642.spi0:132k(bootloader),33k(ubparams),99k(spare),1056k(linux),2112k(rootfs),33k(nvram),-(rootfs_data)\0"
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- "fbargs=setenv bootargs mtdparts=AT45DB642.spi0:132k(bootloader),33k(ubparams),99k(spare),1056k(linux),2112k(rootfs),33k(nvram),-(rootfs_data) root=/dev/mtdblock4 ro init=/etc/preinit console=/dev/ttyS0,115200,mem=32M\0"
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- "rdba=setenv bootargs mtdparts=AT45DB642.spi0:132k(bootloader),33k(ubparams),99k(spare),1056k(linux),2112k(rootfs),33k(nvram),-(rootfs_data) root=/dev/ram rw initrd=0x21200000,6000000 ramdisk_size=20000 init=/etc/preinit console=/dev/ttyS0,115200,mem=32M\0"
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+ "fbargs=setenv bootargs root=/dev/mtdblock3 ro init=/etc/preinit console=/dev/ttyS0,115200,mem=32M\0"
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+ "rdba=setenv bootargs root=/dev/ram rw initrd=0x21200000,6000000 ramdisk_size=20000 init=/etc/preinit console=/dev/ttyS0,115200,mem=32M\0"
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"rdram=run rdba; tftp 21000000 vImage; tftp 21200000 root.squashfs; bootm 21000000\0"
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"flash=run fbargs; bootm 0xc0042000\0"
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- "bootargs=setenv bootargs mtdparts=AT45DB642.spi0:132k(bootloader),33k(ubparams),99k(spare),1056k(linux),2112k(rootfs),33k(nvram),-(rootfs_data) root=/dev/mtdblock4 ro init=/etc/preinit console=/dev/ttyS0,115200,mem=32M\0"
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+ "bootargs=setenv bootargs root=/dev/mtdblock3 ro init=/etc/preinit console=/dev/ttyS0,115200,mem=32M\0"
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"bootcmd=bootm 0xc0042000\0"
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"ethaddr=00:30:49:00:00:01\0"
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"ipaddr=10.0.1.73\0"
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@ -0,0 +1,36 @@ |
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--- linux-2.6.19.2.old/drivers/mtd/devices/at91_dataflash.c 2007-05-01 13:08:03.000000000 +0200
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+++ linux-2.6.19.2/drivers/mtd/devices/at91_dataflash.c 2007-05-03 09:01:37.000000000 +0200
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@@ -146,7 +146,7 @@
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};
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#endif
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-static const char *part_probes[] = { "cmdlinepart", NULL, };
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+static const char *part_probes[] = { "cmdlinepart", "at91part", NULL, };
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#endif
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--- linux-2.6.19.2.old/drivers/mtd/Kconfig 2007-05-01 13:08:02.000000000 +0200
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+++ linux-2.6.19.2/drivers/mtd/Kconfig 2007-05-03 08:58:12.000000000 +0200
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@@ -157,6 +157,12 @@
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for your particular device. It won't happen automatically. The
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'armflash' map driver (CONFIG_MTD_ARMFLASH) does this, for example.
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+config MTD_AT91_PARTS
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+ tristate "Atmel AT91 partitioning support"
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+ depends on MTD_PARTITIONS && ARCH_AT91RM9200 && AT91_SPI
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+ ---help---
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+ Atmel AT91 partitioning support
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+
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comment "User Modules And Translation Layers"
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depends on MTD
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--- linux-2.6.19.2.old/drivers/mtd/Makefile 2007-01-10 20:10:37.000000000 +0100
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+++ linux-2.6.19.2/drivers/mtd/Makefile 2007-05-03 09:00:00.000000000 +0200
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@@ -12,6 +12,7 @@
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obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o
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obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o
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obj-$(CONFIG_MTD_AFS_PARTS) += afs.o
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+obj-$(CONFIG_MTD_AT91_PARTS) += at91part.o
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# 'Users' - code which presents functionality to userspace.
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obj-$(CONFIG_MTD_CHAR) += mtdchar.o
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