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MIPS: bootm: add mem, rd_start and rd_size to kernel command line 

If the user wants to boot a kernel without legacy environment,
information like memory size, initrd address and size should be
handed over to the kernel in the command line.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This commit is contained in:
Daniel Schwierzeck 2015-01-14 21:44:13 +01:00
parent ca65e5851f
commit 8cec725ad5
1 changed files with 26 additions and 0 deletions
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26
arch/mips/lib/bootm.c
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@ -144,10 +144,36 @@ static void linux_cmdline_legacy(bootm_headers_t *images)
}
}
static void linux_cmdline_append(bootm_headers_t *images)
{
char buf[24];
ulong mem, rd_start, rd_size;
/* append mem */
mem = gd->ram_size >> 20;
sprintf(buf, "mem=%luM", mem);
linux_cmdline_set(buf, strlen(buf));
/* append rd_start and rd_size */
rd_start = images->initrd_start;
rd_size = images->initrd_end - images->initrd_start;
if (rd_size) {
sprintf(buf, "rd_start=0x%08lX", rd_start);
linux_cmdline_set(buf, strlen(buf));
sprintf(buf, "rd_size=0x%lX", rd_size);
linux_cmdline_set(buf, strlen(buf));
}
}
static void boot_cmdline_linux(bootm_headers_t *images)
{
if (mips_boot_cmdline_legacy) {
linux_cmdline_legacy(images);
if (!mips_boot_env_legacy)
linux_cmdline_append(images);
linux_cmdline_dump();
}
}