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arm_boot: Conditionalised DTB command line update 

The DTB command line should only be overwritten if the user provides a command
line with -append. Otherwise whatever command line was in the DTB should stay
unchanged.

Signed-off-by: Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter A. G. Crosthwaite 2012-06-17 15:35:36 +00:00 committed by Peter Maydell
parent 69efc0265f
commit 5e87975c87
1 changed files with 6 additions and 4 deletions
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10
hw/arm_boot.c
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@ -242,10 +242,12 @@ static int load_dtb(target_phys_addr_t addr, const struct arm_boot_info *binfo)
fprintf(stderr, "couldn't set /memory/reg\n");
}
rc = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
binfo->kernel_cmdline);
if (rc < 0) {
fprintf(stderr, "couldn't set /chosen/bootargs\n");
if (binfo->kernel_cmdline && *binfo->kernel_cmdline) {
rc = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
binfo->kernel_cmdline);
if (rc < 0) {
fprintf(stderr, "couldn't set /chosen/bootargs\n");
}
}
if (binfo->initrd_size) {