On Wed 2021-12-15 @ 04:20:47 PM, Quentin Schulz wrote:

Hi Khem,

On Tue, Dec 14, 2021 at 10:11:54AM -0800, Khem Raj wrote:

On Tue, Dec 14, 2021 at 3:39 AM Quentin Schulz
<quentin.schulz@...> wrote:

Not all Rockchip boards have their console running at 1500000 baud in
U-Boot and the kernel. Such is the case for puma-haikou RK3399-based
SoM+Carrierboard.

In order to prepare for the addition of puma-haikou to meta-rockchip,
let's replace the baudrate in TF-A by the one defined in the machine
conf file in the RK_CONSOLE_BAUD variable.

Cc: Quentin Schulz <foss+yocto@...>
Signed-off-by: Quentin Schulz <quentin.schulz@...>
---

v2: use a less restrictive regular expression

.../files/serial-console-baudrate.patch | 36 -------------------
.../trusted-firmware-a_%.bbappend | 6 +++-
2 files changed, 5 insertions(+), 37 deletions(-)
delete mode 100644 recipes-bsp/trusted-firmware-a/files/serial-console-baudrate.patch

diff --git a/recipes-bsp/trusted-firmware-a/files/serial-console-baudrate.patch b/recipes-bsp/trusted-firmware-a/files/serial-console-baudrate.patch
deleted file mode 100644
index 2d6e9bf..0000000
--- a/recipes-bsp/trusted-firmware-a/files/serial-console-baudrate.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-From 840d6b6420e1fd8cdf6e4de7fa58a6f8de151622 Mon Sep 17 00:00:00 2001
-From: Yann Dirson <yann@...>
-Date: Tue, 6 Apr 2021 17:28:45 +0200
-Subject: [PATCH] Set serial console baudrate back to 1500000.
-Upstream-Status: Inappropriate[other]
-
-TF-A runs between two u-boot stages which both uses 1500000 baud, it
-just makes no sense to use the same UART at a different rate.
-
-This effectively reverts part of 0c05748bdebfad9fa43a80962186438bb8fbce62.
-Main reason for that change stated in https://urldefense.proofpoint.com/v2/url?u=https-3A__developer.trustedfirmware.org_T762&d=DwIBaQ&c=_sEr5x9kUWhuk4_nFwjJtA&r=LYjLexDn7rXIzVmkNPvw5ymA1XTSqHGq8yBP6m6qZZ4njZguQhZhkI_-172IIy1t&m=MGuJiAJcTH-5vXWFahwY8w58v88VHX-B3gl_Qbo3NSRaMXS1EfPbxRWECgCDt3wO&s=P_BZb0-FTKKpmyBRgwgtL7OgfLI_iSC_nn_FBSQXE8o&e=
-is ChromeOS compatibility.
-
-Looks like this patch may become unnecessary in the future, when
-u-boot and TF-A get to communicate this value.
-
----
- plat/rockchip/rk3399/rk3399_def.h | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/plat/rockchip/rk3399/rk3399_def.h b/plat/rockchip/rk3399/rk3399_def.h
-index ba83242eb..8d6ecfbe6 100644
---- a/plat/rockchip/rk3399/rk3399_def.h
-+++ b/plat/rockchip/rk3399/rk3399_def.h
-@@ -17,7 +17,7 @@
- /**************************************************************************
- * UART related constants
- **************************************************************************/
--#define RK3399_BAUDRATE 115200
-+#define RK3399_BAUDRATE 1500000
- #define RK3399_UART_CLOCK 24000000
-
- /******************************************************************************
---
-2.30.2
-
diff --git a/recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend b/recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend
index 513cea1..07fae1e 100644
--- a/recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend
+++ b/recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend
@@ -7,7 +7,6 @@ COMPATIBLE_MACHINE:append:rk3328 = "|rk3328"

FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
SRC_URI += "\
- file://serial-console-baudrate.patch \
file://0001-dram-Fix-build-with-gcc-11.patch \
file://0001-plat_macros.S-Use-compatible-.asciz-asm-directive.patch \
file://0001-pmu-Do-not-mark-already-defined-functions-as-weak.patch \
@@ -19,3 +18,8 @@ SRC_URI += "\
# this needs fixing until then use gcc
TOOLCHAIN:rk3399 = "gcc"

+fixup_rk3399_baudrate() {
+ sed -i "s/#define RK3399_BAUDRATE\s\+.*/#define RK3399_BAUDRATE ${RK_CONSOLE_BAUD}/" ${S}/plat/rockchip/rk3399/rk3399_def.h
+}
+
+do_patch[postfuncs] += "fixup_rk3399_baudrate"

perhaps applying the sed expression via do_configure:prepend() is simple ?
and maybe make it rk3399 specific with do_configure:prepend:rk3399

It is effectively patching the sources, and I'd personally expect
sources to not be changed after running -c do_patch for a recipe.

I don't have strong feelings either way, but it does feel more like a patching
operation than a configuration one.