From c335649629e641209a3539209defffeea090ad8f Mon Sep 17 00:00:00 2001 From: Christo Nedev Date: Fri, 1 Jun 2018 14:23:21 +0000 Subject: [PATCH] brcm2708: Update brcm2708-gpu-fw package MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Problem - rapsberry pi 3 b/b+ does not boot with bcm2710 images! How Raspberry Pi boots Actualy? When Raspberry is switched on GPU is activated. 1. GPU execute First stage bootloader from ROM. First stage bootloader mount the FAT boot partition on the SD card and execute second stage bootloader (bootcode.bin). 2. Second stage bootloader (bootcode.bin) activate SDRAM. Load the GPU firmware (start.elf). 3. GPU firmware (start.elf) a) display Rainbow splash. b) read firmware configuration file config.txt and split the RAM using fixup.dat. c) loads a cmdline.txt d) enables the CPU. e) loads the kernel image configurable via config.txt In your target/linux/brcm2708/image/config.txt 493 ## kernel (string) 494 ## Alternative name to use when loading kernel. 495 ## 496 #kernel="" it is not configured! But in your target/linux/brcm2708/image/Makefile 75 KERNEL_IMG := kernel8.img 76 DEVICE_TITLE := Raspberry Pi 3B/3B+ you have kernel8.img GPU Firmware search order by default for a PI 3 is: kernel8.img if found boot in 64 bit mode kernel8-32.img if found boot in 32 bit mode kernel7.img if found boot in 32 bit mode kernel.img if found boot in 32 bit mode But a PI 2 will start the search from kernel7.img and a PI 1 only looks for kernel.img. Đžbviously the kernel has been found. But something goes wrong and the device is restarted. In your package/kernel/brcm2708-gpu-fw/Makefile 11 PKG_NAME:=brcm2708-gpu-fw 12 PKG_VERSION:=2017-08-08 13 PKG_RELEASE:=e7ba7ab135f5a68b2c00a919ea9ac8d5528a5d5b boot loader is 10 monts old. In conclusion, the best way to solve the problem is to update the boot loader! Fixup_cd.dat and start_cd.elf files are not necessary. These are used when GPU memory is set to 16 MB, which disables some GPU features. I did not remove them just in case! cheers Signed-off-by: Christo Nedev --- package/kernel/brcm2708-gpu-fw/Makefile | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/package/kernel/brcm2708-gpu-fw/Makefile b/package/kernel/brcm2708-gpu-fw/Makefile index 9f3d7d3092..73aebd7b5f 100644 --- a/package/kernel/brcm2708-gpu-fw/Makefile +++ b/package/kernel/brcm2708-gpu-fw/Makefile @@ -9,8 +9,8 @@ include $(TOPDIR)/rules.mk include $(INCLUDE_DIR)/kernel.mk PKG_NAME:=brcm2708-gpu-fw -PKG_VERSION:=2017-08-08 -PKG_RELEASE:=e7ba7ab135f5a68b2c00a919ea9ac8d5528a5d5b +PKG_VERSION:=2018-05-16 +PKG_RELEASE:=0f5f899ccec1c2ef8bba02aa49700b4ec19b4199 PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/$(PKG_NAME)/rpi-firmware-$(PKG_RELEASE) @@ -33,7 +33,7 @@ define Download/bootcode_bin FILE:=$(RPI_FIRMWARE_FILE)-bootcode.bin URL:=$(RPI_FIRMWARE_URL) URL_FILE:=bootcode.bin - HASH:=b5928ef5253774362014f9e7de856397a932514fe1bc5d7f7817a73c0e10e863 + HASH:=c9eb5258766fabf7127e790b257f106e2717f0ccaaed37544b970b0d113956fc endef $(eval $(call Download,bootcode_bin)) @@ -41,7 +41,7 @@ define Download/fixup_dat FILE:=$(RPI_FIRMWARE_FILE)-fixup.dat URL:=$(RPI_FIRMWARE_URL) URL_FILE:=fixup.dat - HASH:=d95fcac57de7ab71e863a115fd60444f6099cb2ea100f4a68b2c606f79e775ed + HASH:=8a6311e73d0f349be9b8424db0644fd8f48aaf721f3f2f487488c83d7316cbdf endef $(eval $(call Download,fixup_dat)) @@ -49,7 +49,7 @@ define Download/fixup_cd_dat FILE:=$(RPI_FIRMWARE_FILE)-fixup_cd.dat URL:=$(RPI_FIRMWARE_URL) URL_FILE:=fixup_cd.dat - HASH:=28f3ec8388df4e0c47489f8370a29ca81dbc536fe7db9978342865b5d093ec36 + HASH:=973b008aae9711d57ddce4f058354fe5a0b4725dd825673f784a2e2754da1f28 endef $(eval $(call Download,fixup_cd_dat)) @@ -57,7 +57,7 @@ define Download/start_elf FILE:=$(RPI_FIRMWARE_FILE)-start.elf URL:=$(RPI_FIRMWARE_URL) URL_FILE:=start.elf - HASH:=8712fb4e241a22f7a33de0f1d420e0fdfff237952aa685c907b91e59c8d487fa + HASH:=8e77c4cce7e44ced609e5046dd55f19cb7656a8ce4694e733b7eb6ecab915fe1 endef $(eval $(call Download,start_elf)) @@ -65,7 +65,7 @@ define Download/start_cd_elf FILE:=$(RPI_FIRMWARE_FILE)-start_cd.elf URL:=$(RPI_FIRMWARE_URL) URL_FILE:=start_cd.elf - HASH:=c600ab34bea389da10aac541bf2f9c62e5f774093b7e1f2f72c4637f9cf3a83c + HASH:=25223b479b7aca1d74c6f7a1829aba69fd14906ca5b25ae12571fe71ea2c5a4a endef $(eval $(call Download,start_cd_elf))