openwrt/target/linux/bcm27xx/patches-5.10/950-0183-Initialise-rpi-firmware-before-clk-bcm2835.patch
Álvaro Fernández Rojas 8299d1f057 bcm27xx: add kernel 5.10 support
Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted
patches, wireless patches and defconfig patches.

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 4B v1.1 4G
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2021-08-21 19:07:07 +02:00

48 lines
1.6 KiB
Diff

From a4dd91006d4fdbd5c0f32e48eb7babc98ebc37f2 Mon Sep 17 00:00:00 2001
From: Luke Hinds <7058938+lukehinds@users.noreply.github.com>
Date: Wed, 22 Jan 2020 16:03:00 +0000
Subject: [PATCH] Initialise rpi-firmware before clk-bcm2835
The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted
Platform Module) having been registered when it initialises; otherwise
it assumes there is no TPM. It has been observed on BCM2835 that IMA
is initialised before TPM, and that initialising the BCM2835 clock
driver before the firmware driver has the effect of reversing this
order.
Change the firmware driver to initialise at core_initcall, delaying the
BCM2835 clock driver to postcore_initcall.
See: https://github.com/raspberrypi/linux/issues/3291
https://github.com/raspberrypi/linux/pull/3297
Signed-off-by: Luke Hinds <lhinds@redhat.com>
Co-authored-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/clk/bcm/clk-bcm2835.c | 2 +-
drivers/firmware/raspberrypi.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -2429,7 +2429,7 @@ static int __init __bcm2835_clk_driver_i
{
return platform_driver_register(&bcm2835_clk_driver);
}
-core_initcall(__bcm2835_clk_driver_init);
+postcore_initcall(__bcm2835_clk_driver_init);
MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
MODULE_DESCRIPTION("BCM2835 clock driver");
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -430,7 +430,7 @@ out2:
out1:
return ret;
}
-subsys_initcall(rpi_firmware_init);
+core_initcall(rpi_firmware_init);
static void __init rpi_firmware_exit(void)
{