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author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2019-05-12 21:16:25 +0300 |
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committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2019-05-12 21:54:23 +0300 |
commit | e2d82f8b2a91fb3fa78345f935a93a6db575effa (patch) | |
tree | eea712493fa5ce9cd1a2976bd7a3e47eb03c08b7 | |
parent | 7e92db810b814198d57b10d438f146f181417194 (diff) | |
download | u-boot-e2d82f8b2a91fb3fa78345f935a93a6db575effa.tar.xz |
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>
-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 0b3c5cdb90..c19256e00d 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) { |