colin/nix-files
1
0
Fork 1
Code Issues Pull Requests Projects Releases Wiki Activity

u-boot-pinephone-pro: tune UART & memory addresses

Browse Source
This commit is contained in:
Colin
2024-09-26 05:54:14 +00:00
parent 0a7606231d
commit 4c554e54c7
1 changed files with 23 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
pkgs/additional/u-boot-pinephone-pro/default.nix
View File

@@ -24,6 +24,29 @@
"u-boot.sym" "u-boot.sym"
]; ];
}).overrideAttrs (base: { }).overrideAttrs (base: {
# default baud rate is 1500000, which is too fast for some USB <-> serial adapters to do
extraConfig = ''
CONFIG_BAUDRATE=115200
'';
# default layout is:
# scriptaddr = 0x00500000
# script_offset_f = 0xffe000
# script_size_f = 0x2000
# pxefile_addr_r = 0x00600000
# fdt_addr_r = 0x01e00000
# fdtoverlay_addr_r = 0x01f00000
# kernel_addr_r = 0x02080000
# ramdisk_addr_r = 0x06000000
# kernel_comp_addr_r = 0x08000000
# kernel_comp_size = 0x2000000
#
# this offers 63.5 MiB for the kernel.
# unfortunately, my bloated kernels can be larger than that, so push the addresses back and hope it works:
postPatch = (base.postPatch or "") + ''
substituteInPlace include/configs/rk3399_common.h \
--replace-fail ramdisk_addr_r=0x06000000 ramdisk_addr_r=0x0a000000 \
--replace-fail kernel_comp_addr_r=0x08000000 kernel_comp_addr_r=0x0c000000
'';
env = (base.env or {}) // { env = (base.env or {}) // {
# XXX: RK3399 ships a blob for HDCP (media copy protection) in the trusted firmware. # XXX: RK3399 ships a blob for HDCP (media copy protection) in the trusted firmware.
# that can be removed with `unfreeIncludeHDCPBlob = false`, if so desired. # that can be removed with `unfreeIncludeHDCPBlob = false`, if so desired.