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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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src/interface/efi/efi_fdt.c
+3 -2
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@@ -107,13 +107,14 @@ static struct fdt_header *efi_fdt_installed;
/**
* Install EFI Flattened Device Tree table
*
* @v cmdline Command line, or NULL
* @ret rc Return status code
*/
int efi_fdt_install ( void ) {
int efi_fdt_install ( const char *cmdline ) {
int rc;
/* Create device tree */
if ( ( rc = fdt_create ( &efi_fdt_installed ) ) != 0 ) {
if ( ( rc = fdt_create ( &efi_fdt_installed, cmdline ) ) != 0 ) {
DBGC ( &efi_fdt, "EFI_FDT could not install: %s\n",
strerror ( rc ) );
goto err_create;