Commit baac1d36 authored by Max Filippov's avatar Max Filippov
Browse files

xtensa: make bootparam parsing optional



A kernel may not need any boot parameters from the bootloader, allow
disabling bootparam parsing in that case.

Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent 8b5163eb
......@@ -473,6 +473,15 @@ config BUILTIN_DTB
string "DTB to build into the kernel image"
depends on OF
config PARSE_BOOTPARAM
bool "Parse bootparam block"
default y
help
Parse parameters passed to the kernel from the bootloader. It may
be disabled if the kernel is known to run without the bootloader.
If unsure, say Y.
config BLK_DEV_SIMDISK
tristate "Host file-based simulated block device support"
default n
......
......@@ -42,7 +42,10 @@ RomInitAddr:
.word KERNELOFFSET
#endif
RomBootParam:
.word _bootparam
#ifndef CONFIG_PARSE_BOOTPARAM
.word 0
#else
.word _bootparam
_bootparam:
.short BP_TAG_FIRST
.short 4
......@@ -50,6 +53,7 @@ _bootparam:
.short BP_TAG_LAST
.short 0
.long 0
#endif
.align 4
_SetupMMU:
......
......@@ -79,6 +79,7 @@ static char __initdata command_line[COMMAND_LINE_SIZE];
static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
#endif
#ifdef CONFIG_PARSE_BOOTPARAM
/*
* Boot parameter parsing.
*
......@@ -176,6 +177,13 @@ static int __init parse_bootparam(const bp_tag_t* tag)
return 0;
}
#else
static int __init parse_bootparam(const bp_tag_t *tag)
{
pr_info("Ignoring boot parameters at %p\n", tag);
return 0;
}
#endif
#ifdef CONFIG_OF
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment