diff options
| author | Heinrich Schuchardt | 2019-05-12 20:16:25 +0200 |
|---|---|---|
| committer | Heinrich Schuchardt | 2019-05-12 20:54:23 +0200 |
| commit | e2d82f8b2a91fb3fa78345f935a93a6db575effa (patch) | |
| tree | eea712493fa5ce9cd1a2976bd7a3e47eb03c08b7 /cmd/bootefi.c | |
| parent | 7e92db810b814198d57b10d438f146f181417194 (diff) | |
efi_loader: comments for efi_install_fdt()
Describe that efi_install_fdt() defaults to using the device tree
indicated by environment variable fdtcontroladdr.
ACPI tables and device trees are mutually exclusive.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'cmd/bootefi.c')
| -rw-r--r-- | cmd/bootefi.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/cmd/bootefi.c b/cmd/bootefi.c index 0b3c5cdb902..c19256e00dc 100644 --- a/cmd/bootefi.c +++ b/cmd/bootefi.c @@ -196,11 +196,16 @@ static void *get_config_table(const efi_guid_t *guid) /** * efi_install_fdt() - install fdt passed by a command argument + * + * If fdt_opt is available, the device tree located at that memory address will + * will be installed as configuration table, otherwise the device tree located + * at the address indicated by environment variable fdtcontroladdr will be used. + * + * On architectures (x86) using ACPI tables device trees shall not be installed + * as configuration table. + * * @fdt_opt: pointer to argument * Return: status code - * - * If specified, fdt will be installed as configuration table, - * otherwise no fdt will be passed. */ static efi_status_t efi_install_fdt(const char *fdt_opt) { |