summaryrefslogtreecommitdiffstats
path: root/arch/x86
diff options
context:
space:
mode:
authorLee, Chun-Yi <joeyli.kernel@gmail.com>2012-12-20 19:33:22 +0800
committerMatt Fleming <matt.fleming@intel.com>2013-01-31 14:44:44 +0000
commitdeb94101c4fda22e152c2a311210cf09ae51adf6 (patch)
treec7a7ee83eae23fe9a4949b35f081641745cec951 /arch/x86
parent04c2eee5b9dfcb13f3cd07a5537fb8c785f2751a (diff)
downloadop-kernel-dev-deb94101c4fda22e152c2a311210cf09ae51adf6.zip
op-kernel-dev-deb94101c4fda22e152c2a311210cf09ae51adf6.tar.gz
x86, efi: Allow slash in file path of initrd
When initrd file didn't put at the same place with stub kernel, we need give the file path of initrd, but need use backslash to separate directory and file. It's not friendly to unix/linux user, and not so intuitive for bootloader forward paramters to efi stub kernel by chainloading. This patch add support to handle_ramdisks for allow slash in file path of initrd, it convert slash to backlash when parsing path. In additional, this patch also separates print code of efi_char16_t from efi_printk, and print out the path/filename of initrd when failed to open initrd file. It's good for debug and discover typo. Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Lee, Chun-Yi <jlee@suse.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/boot/compressed/eboot.c26
1 files changed, 19 insertions, 7 deletions
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index f8fa411..c205035 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -19,23 +19,28 @@
static efi_system_table_t *sys_table;
+static void efi_char16_printk(efi_char16_t *str)
+{
+ struct efi_simple_text_output_protocol *out;
+
+ out = (struct efi_simple_text_output_protocol *)sys_table->con_out;
+ efi_call_phys2(out->output_string, out, str);
+}
+
static void efi_printk(char *str)
{
char *s8;
for (s8 = str; *s8; s8++) {
- struct efi_simple_text_output_protocol *out;
efi_char16_t ch[2] = { 0 };
ch[0] = *s8;
- out = (struct efi_simple_text_output_protocol *)sys_table->con_out;
-
if (*s8 == '\n') {
efi_char16_t nl[2] = { '\r', 0 };
- efi_call_phys2(out->output_string, out, nl);
+ efi_char16_printk(nl);
}
- efi_call_phys2(out->output_string, out, ch);
+ efi_char16_printk(ch);
}
}
@@ -709,7 +714,12 @@ static efi_status_t handle_ramdisks(efi_loaded_image_t *image,
if ((u8 *)p >= (u8 *)filename_16 + sizeof(filename_16))
break;
- *p++ = *str++;
+ if (*str == '/') {
+ *p++ = '\\';
+ *str++;
+ } else {
+ *p++ = *str++;
+ }
}
*p = '\0';
@@ -737,7 +747,9 @@ static efi_status_t handle_ramdisks(efi_loaded_image_t *image,
status = efi_call_phys5(fh->open, fh, &h, filename_16,
EFI_FILE_MODE_READ, (u64)0);
if (status != EFI_SUCCESS) {
- efi_printk("Failed to open initrd file\n");
+ efi_printk("Failed to open initrd file: ");
+ efi_char16_printk(filename_16);
+ efi_printk("\n");
goto close_handles;
}
OpenPOWER on IntegriCloud