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Don't use DTB in U-Boot, read it from OpenSBI

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This commit is contained in:
Rodrigo Arias 2024-07-11 16:00:43 +02:00
parent 5ddea498ca
commit 9f6f8bcddc
2 changed files with 20 additions and 2 deletions
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18
JOURNAL.md
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@ -1393,3 +1393,21 @@ from the host to the serial console to test it.
It may be worth enabling huge pages again, as there didn't seem to have any
effect.
### OBSERVATION: There are extra regions mapped by OpenSBI
In the OpenSBI 1.2 test from buildroot:
Domain0 Region00 : 0x0000000080000000-0x000000008003ffff ()
Domain0 Region01 : 0x0000000000000000-0xffffffffffffffff (R,W,X)
Domain0 Next Address : 0x0000000080200000
Domain0 Next Arg1 : 0x0000000080010000
But with OpenSBI 1.4:
Domain0 Region00 : 0x0000000040000000-0x0000000040000fff M: (I,R,W) S/U: (R,W)
Domain0 Region01 : 0x0000000080020000-0x000000008002ffff M: (R,W) S/U: ()
Domain0 Region02 : 0x0000000080000000-0x000000008001ffff M: (R,X) S/U: ()
Domain0 Region03 : 0x0000000000000000-0xffffffffffffffff M: () S/U: (R,W,X)
Domain0 Next Address : 0x0000000080200000
Domain0 Next Arg1 : 0x0000000080013000

4
lagarto-ox.nix
View File

@ -217,7 +217,7 @@
bootrom = "${final.bitstreams}/lagarto-3-ox/large_bootrom.bin";
uboot = prev.ubootQemuRiscv64Smode.override {
filesToInstall = [ "u-boot.bin" "u-boot-nodtb.bin" ];
filesToInstall = [ "u-boot-nodtb.bin" ];
#version = "2023.07.02-print-cpu-probe";
#src = builtins.fetchGit {
# url = "file:///home/Computational/rarias/riscv/u-boot";
@ -319,7 +319,7 @@
#"PLATFORM_RISCV_ISA=rv64imafd" # No compressed instructions
#"PLATFORM_RISCV_ISA=rv64g" # No compressed instructions
#"PLATFORM_RISCV_ABI=lp64d"
"FW_PAYLOAD_PATH=${final.uboot}/u-boot.bin"
"FW_PAYLOAD_PATH=${final.uboot}/u-boot-nodtb.bin"
"FW_FDT_PATH=${final.ox-dtb}"
];
patches = [ ./ox-alveo-platform-plic.patch ];