diff options
Diffstat (limited to 'packages/linux/compulab-pxa270-2.6.22/0006-ramdisk_load.patch')
| -rw-r--r-- | packages/linux/compulab-pxa270-2.6.22/0006-ramdisk_load.patch | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/packages/linux/compulab-pxa270-2.6.22/0006-ramdisk_load.patch b/packages/linux/compulab-pxa270-2.6.22/0006-ramdisk_load.patch new file mode 100644 index 0000000000..aa25dd9bfc --- /dev/null +++ b/packages/linux/compulab-pxa270-2.6.22/0006-ramdisk_load.patch @@ -0,0 +1,80 @@ +From ca4508b1266109208f62e986b51397ce2788e255 Mon Sep 17 00:00:00 2001 +From: Cliff Brake <cbrake@happy.dev.bec-systems.com> +Date: Fri, 20 Jul 2007 19:01:50 -0400 +Subject: [PATCH] ramdisk_load + +--- + arch/arm/mach-pxa/cm-x270.c | 6 ++++++ + include/asm-arm/arch-pxa/cm-x270.h | 2 ++ + init/initramfs.c | 16 ++++++++++++++++ + 3 files changed, 24 insertions(+), 0 deletions(-) + +diff --git a/arch/arm/mach-pxa/cm-x270.c b/arch/arm/mach-pxa/cm-x270.c +index 88b080d..c6ec489 100644 +--- a/arch/arm/mach-pxa/cm-x270.c ++++ b/arch/arm/mach-pxa/cm-x270.c +@@ -308,6 +308,12 @@ static struct map_desc cmx270_io_desc[] __initdata = { + .length = PXA_CS_SIZE, + .type = MT_DEVICE + }, ++ [2] = { /* NOR flash */ ++ .virtual = CMX270_FLASH_VIRT, ++ .pfn = __phys_to_pfn(PXA_CS0_PHYS), ++ .length = (8<<20), /* up to 8 MByte flash */ ++ .type = MT_DEVICE ++ }, + }; + + /* +diff --git a/include/asm-arm/arch-pxa/cm-x270.h b/include/asm-arm/arch-pxa/cm-x270.h +index 24613a5..aad152e 100644 +--- a/include/asm-arm/arch-pxa/cm-x270.h ++++ b/include/asm-arm/arch-pxa/cm-x270.h +@@ -20,7 +20,9 @@ + + #define CMX270_IT8152_VIRT (CMX270_VIRT_BASE) + #define CMX270_IDE104_VIRT (CMX270_IT8152_VIRT + PXA_CS_SIZE) ++#define CMX270_FLASH_VIRT (CMX270_IDE104_VIRT + PXA_CS_SIZE) + ++#define CMX270_FLASH_RAMDISK_VIRT (CMX270_FLASH_VIRT + 0x1c0000) + + /* GPIO related definitions */ + #define GPIO_IT8152_IRQ (22) +diff --git a/init/initramfs.c b/init/initramfs.c +index 00eff7a..0ecd40b 100644 +--- a/init/initramfs.c ++++ b/init/initramfs.c +@@ -7,6 +7,9 @@ + #include <linux/string.h> + #include <linux/syscalls.h> + ++// HACK for compulab cm-x270 ++#include <asm/arch/cm-x270.h> ++ + static __initdata char *message; + static void __init error(char *x) + { +@@ -550,7 +553,20 @@ static int __init populate_rootfs(void) + #ifdef CONFIG_BLK_DEV_INITRD + if (initrd_start) { + #ifdef CONFIG_BLK_DEV_RAM ++ ++ /* hack to make initramfs work because the ++ * compulab BL does not zero out the ++ * initrd memory. This only seems to affect loading ++ * initramfs (cpio.gz) archives. Does not seem to ++ * affect ramdisks. ++ */ ++ int initrd_size = *(int *)(CMX270_FLASH_RAMDISK_VIRT); + int fd; ++ ++ initrd_end = initrd_start + initrd_size; ++ //printk("CLIFF: initrd_start = 0x%x\n", initrd_start); ++ //printk("CLIFF: initrd_end = 0x%x\n", initrd_end); ++ + printk(KERN_INFO "checking if image is initramfs..."); + err = unpack_to_rootfs((char *)initrd_start, + initrd_end - initrd_start, 1); +-- +1.5.1.6 + |