From 8cec725ad502c955c2e8088ae1afb4e06ef80cef Mon Sep 17 00:00:00 2001 From: Daniel Schwierzeck Date: Wed, 14 Jan 2015 21:44:13 +0100 Subject: [PATCH] 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 --- 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 fa579b36e4..7a98f15131 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(); } } -- 2.30.2