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x86: zimage: Improve command-line debug handling

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At present if the command line is very long it is truncated by the
printf() statement, which works within a limited buffer. Use puts()
instead. Also show better debugging with the command-line setup
fails.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2021-01-24 10:06:09 -07:00 • committed by Bin Meng
parent 577c4ad055
commit 06c085c0d2
1 changed files with 7 additions and 3 deletions
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10
arch/x86/lib/zimage.c
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@ -109,8 +109,11 @@ static void build_command_line(char *command_line, int auto_boot)
if (env_command_line)
strcat(command_line, env_command_line);
printf("Kernel command line: \"%s\"\n", command_line);
#ifdef DEBUG
printf("Kernel command line:");
puts(command_line);
printf("\n");
#endif
}
static int kernel_magic_ok(struct setup_header *hdr)
@ -354,7 +357,8 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
build_command_line(cmd_line, auto_boot);
ret = bootm_process_cmdline(cmd_line, max_size, BOOTM_CL_ALL);
if (ret) {
printf("Cmdline setup failed (err=%d)\n", ret);
printf("Cmdline setup failed (max_size=%x, bootproto=%x, err=%d)\n",
max_size, bootproto, ret);
return ret;
}
printf("Kernel command line: \"");