diff options
Diffstat (limited to 'packages/linux/ixp4xx-kernel/2.6.15/94-nslu2-setup.patch')
| -rw-r--r-- | packages/linux/ixp4xx-kernel/2.6.15/94-nslu2-setup.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/packages/linux/ixp4xx-kernel/2.6.15/94-nslu2-setup.patch b/packages/linux/ixp4xx-kernel/2.6.15/94-nslu2-setup.patch new file mode 100644 index 0000000000..0ed39d9302 --- /dev/null +++ b/packages/linux/ixp4xx-kernel/2.6.15/94-nslu2-setup.patch @@ -0,0 +1,71 @@ +Include a fixup machine start function in nslu2-setup.c to handle +the command line and memory setup parameters which are not specifiable +in the boot loader. + +Signed-off-by: John Bowler <jbowler@acm.org> + +--- linux-2.6.15/arch/arm/mach-ixp4xx/nslu2-setup.c 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/arch/arm/mach-ixp4xx/nslu2-setup.c 1970-01-01 00:00:00.000000000 +0000 +@@ -18,6 +18,8 @@ + #include <linux/serial_8250.h> + #include <linux/mtd/mtd.h> + ++#include <asm/setup.h> ++#include <asm/memory.h> + #include <asm/mach-types.h> + #include <asm/mach/arch.h> + #include <asm/mach/flash.h> +@@ -165,12 +167,52 @@ static void __init nslu2_init(void) + platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices)); + } + ++/* ++ * NSLU2 RedBoot passes garbage atag/parameter values - i.e. r2 ++ * on entry is not useable - so we get to set the right values ++ * here... ++ */ ++static void __init nslu2_fixup(struct machine_desc *desc, ++ struct tag *tags, char **cmdline, struct meminfo *mi) ++{ ++ char saved_command_line[COMMAND_LINE_SIZE]; ++ /* Put NSLU2 specific known-required-for-certain stuff here, leave ++ * a trailing space! ++ */ ++ static char nslu2_command_line[] = ++ "root=/dev/mtdblock4 rw rootfstype=jffs2 init=/linuxrc " ++ "rtc-x1205.probe=0,0x6f rtc-x1205.hctosys=1 "; ++ const int len = (sizeof nslu2_command_line)-1; ++ ++ /* The NSLU2 has one bank of 32MByte memory. ++ * NOTE: this will totally destroy attempts to make fatslugs work, ++ * FATSLUG FATSLUG FATSLUG: please parameterise this! ++ * NOTE: setting nr_banks != 0 causes kernel/setup.c to remove ++ * the mem tags from the tag list. We need do nothing here! ++ */ ++ mi->nr_banks=1; ++ mi->bank[0].start = 0; ++ mi->bank[0].size = (32*1024*1024); ++ mi->bank[0].node = PHYS_TO_NID(0); ++ ++ /* The tag list is the one from kernel/setup.c, it has no ++ * command line, so we are free to make one up, do this by ++ * prepending to the default command line which has been ++ * passed in (so that can override if necessary). ++ */ ++ memcpy(saved_command_line, *cmdline, COMMAND_LINE_SIZE); ++ memcpy(*cmdline, nslu2_command_line, len); ++ memcpy(*cmdline + len, saved_command_line, COMMAND_LINE_SIZE - len); ++ *cmdline[COMMAND_LINE_SIZE-1] = 0; ++} ++ + MACHINE_START(NSLU2, "Linksys NSLU2") + /* Maintainer: www.nslu2-linux.org */ + .phys_ram = PHYS_OFFSET, + .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS, + .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC, +- .boot_params = 0x00000100, ++ .boot_params = 0, /* because they are garbage */ ++ .fixup = nslu2_fixup, + .map_io = ixp4xx_map_io, + .init_irq = ixp4xx_init_irq, + .timer = &ixp4xx_timer, |