From 6ca096977d723f3ac50291d668719bd938a85544 Mon Sep 17 00:00:00 2001 From: Anup Patel <anup.patel@wdc.com> Date: Wed, 14 Oct 2020 16:03:35 +0530 Subject: firmware: Add common FW_FDT_PATH compile-time option Currently, only FW_PAYLOAD has mechanism to embed external FDT using FW_PAYLOAD_FDT_PATH compile-time option. This patch adds a common FW_FDT_PATH compile-time option to embed external FDT for all OpenSBI firmwares (i.e FW_JUMP, FW_PAYLOAD, and FW_DYNAMIC). Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> --- docs/firmware/fw.md | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'docs/firmware') diff --git a/docs/firmware/fw.md b/docs/firmware/fw.md index 4133c23..cc0cc9e 100644 --- a/docs/firmware/fw.md +++ b/docs/firmware/fw.md @@ -51,11 +51,17 @@ case, a *FW_PAYLOAD* firmware allows embedding a flattened device tree in the Firmware Configuration and Compilation -------------------------------------- -All firmware types mandate the definition of the following compile time -configuration parameter. - -* **FW_TEXT_ADDR** - Defines the address at which the previous booting stage - loads OpenSBI firmware. +All firmware types support the following common compile time configuration +parameters: + +* **FW_TEXT_ADDR** - Defines the execution address of the OpenSBI firmware. + This configuration parameter is mandatory. +* **FW_FDT_PATH** - Path to an external flattened device tree binary file to + be embedded in the *.rodata* section of the final firmware. If this option + is not provided then the firmware will expect the FDT to be passed as an + argument by the prior booting stage. +* **FW_FDT_PADDING** - Optional zero bytes padding to the embedded flattened + device tree binary file specified by **FW_FDT_PATH** option. Additionally, each firmware type as a set of type specific configuration parameters. Detailed information for each firmware type can be found in the -- cgit v1.2.3