Old U-Boot supported 4KB page size only. If this version, Linux kernel can not get command line from U-Boot. SH Linux kernel can change page size and empty_zero_page. This patch support this function and fix promlem.

Signed-off-by: Nobuhiro Iwamatsu iwamatsu.nobuhiro@renesas.com --- lib_sh/bootm.c | 44 ++++++++++++++++++-------------------------- 1 files changed, 18 insertions(+), 26 deletions(-)

diff --git a/lib_sh/bootm.c b/lib_sh/bootm.c index bc1c3da..d5056ae 100644 --- a/lib_sh/bootm.c +++ b/lib_sh/bootm.c @@ -2,6 +2,9 @@ * (C) Copyright 2003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * + * (c) Copyright 2008 Nobuhiro Iwamatsu iwamatsu.nobuhiro@renesas.com + * (c) Copyright 2008 Renesas Solutions Corp. + * * See file CREDITS for list of people who contributed to this * project. * @@ -25,47 +28,36 @@ #include <command.h> #include <asm/byteorder.h>

-/* The SH kernel reads arguments from the empty zero page at location - * 0 at the start of SDRAM. The following are copied from - * arch/sh/kernel/setup.c and may require tweaking if the kernel sources - * change. - */ -#define PARAM ((unsigned char *)CFG_SDRAM_BASE + 0x1000) - -#define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000)) -#define RAMDISK_FLAGS (*(unsigned long *) (PARAM+0x004)) -#define ORIG_ROOT_DEV (*(unsigned long *) (PARAM+0x008)) -#define LOADER_TYPE (*(unsigned long *) (PARAM+0x00c)) -#define INITRD_START (*(unsigned long *) (PARAM+0x010)) -#define INITRD_SIZE (*(unsigned long *) (PARAM+0x014)) -/* ... */ -#define COMMAND_LINE ((char *) (PARAM+0x100)) - -#define RAMDISK_IMAGE_START_MASK 0x07FF - #ifdef CFG_DEBUG -static void hexdump (unsigned char *buf, int len) +static void hexdump(unsigned char *buf, int len) { int i;

for (i = 0; i < len; i++) { if ((i % 16) == 0) - printf ("%s%08x: ", i ? "\n" : "", (unsigned int) &buf[i]); - printf ("%02x ", buf[i]); + printf("%s%08x: ", i ? "\n" : "", + (unsigned int)&buf[i]); + printf("%02x ", buf[i]); } - printf ("\n"); + printf("\n"); } #endif

int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) { - char *bootargs = getenv("bootargs"); - + /* Linux kernel load address */ void (*kernel) (void) = (void (*)(void))images->ep; + /* empty_zero_page */ + unsigned char *param = (unsigned char *)image_get_ep(images); + /* Linux kernel command line */ + unsigned char *cmdline = param + 0x100; + /* PAGE_SIZE */ + unsigned long size = images->ep - image_get_ep(images); + char *bootargs = getenv("bootargs");

/* Setup parameters */ - memset(PARAM, 0, 0x1000); /* Clear zero page */ - strcpy(COMMAND_LINE, bootargs); + memset(param, 0, size); /* Clear zero page */ + strcpy(cmdline, bootargs);

kernel(); /* does not return */