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[fdt] Populate boot arguments in constructed device tree

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When creating a device tree to pass to a booted operating system,
ensure that the "chosen" node exists, and populate the "bootargs"
property with the image command line.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2025-04-01 16:53:02 +01:00
parent d853448887
commit 7e64e9b670
5 changed files with 433 additions and 14 deletions
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5
src/image/efi_image.c
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@@ -126,9 +126,10 @@ static wchar_t * efi_image_cmdline ( struct image *image ) {
/**
* Install EFI Flattened Device Tree table (when no FDT support is present)
*
* @v cmdline Command line, or NULL
* @ret rc Return status code
*/
__weak int efi_fdt_install ( void ) {
__weak int efi_fdt_install ( const char *cmdline __unused ) {
return 0;
}
@@ -209,7 +210,7 @@ static int efi_image_exec ( struct image *image ) {
}
/* Install Flattened Device Tree table */
if ( ( rc = efi_fdt_install() ) != 0 ) {
if ( ( rc = efi_fdt_install ( image->cmdline ) ) != 0 ) {
DBGC ( image, "EFIIMAGE %s could not install FDT: %s\n",
image->name, strerror ( rc ) );
goto err_fdt_install;