[U-Boot] [PATCH 5/7] MIPS: bootm: add mem, rd_start and rd_size to kernel command line
Daniel Schwierzeck
daniel.schwierzeck at gmail.com
Sun Nov 16 01:52:05 CET 2014
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 at gmail.com>
---
arch/mips/lib/bootm.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c
index fa579b3..7a98f15 100644
--- a/arch/mips/lib/bootm.c
+++ b/arch/mips/lib/bootm.c
@@ -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();
}
}
--
2.1.3
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