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| author | Eugen Hristev <eugen.hristev@collabora.com> | 2023-02-22 11:05:13 +0200 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2023-02-28 18:07:29 +0800 |
| commit | a6e85a35b50ade7df5f32092c1cc05ade303a22a (patch) | |
| tree | 372c805eb66f654ef7cbae266078aec71dbeb7de /board/radxa | |
| parent | 3bf8e40807632071769f1dfa401662c5336802c9 (diff) | |
| download | u-boot-a6e85a35b50ade7df5f32092c1cc05ade303a22a.tar.gz u-boot-a6e85a35b50ade7df5f32092c1cc05ade303a22a.tar.bz2 u-boot-a6e85a35b50ade7df5f32092c1cc05ade303a22a.zip | |
board: rock5b-rk3588: add memory gaps into kernel's DTB
RK3588 has two memory gaps when using 16 GiB DRAM size:
[0x3fc000000 , 0x3fc500000]
and
[0x3fff00000 , 0x3ffffffff]
If the kernel is agnostic to these gaps, accessing the area causes
a SError panic.
Hence, add reserved memory areas in kernel's DTB before booting.
Signed-off-by: Eugen Hristev <eugen.hristev@collabora.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'board/radxa')
| -rw-r--r-- | board/radxa/rock5b-rk3588/rock5b-rk3588.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/board/radxa/rock5b-rk3588/rock5b-rk3588.c b/board/radxa/rock5b-rk3588/rock5b-rk3588.c index b5d74798f3..5c3b52b948 100644 --- a/board/radxa/rock5b-rk3588/rock5b-rk3588.c +++ b/board/radxa/rock5b-rk3588/rock5b-rk3588.c @@ -2,3 +2,38 @@ /* * Copyright (c) 2023 Collabora Ltd. */ + +#include <fdtdec.h> +#include <fdt_support.h> + +#ifdef CONFIG_OF_BOARD_SETUP +int rock5b_add_reserved_memory_fdt_nodes(void *new_blob) +{ + struct fdt_memory gap1 = { + .start = 0x3fc000000, + .end = 0x3fc4fffff, + }; + struct fdt_memory gap2 = { + .start = 0x3fff00000, + .end = 0x3ffffffff, + }; + unsigned long flags = FDTDEC_RESERVED_MEMORY_NO_MAP; + unsigned int ret; + + /* + * Inject the reserved-memory nodes into the DTS + */ + ret = fdtdec_add_reserved_memory(new_blob, "gap1", &gap1, NULL, 0, + NULL, flags); + if (ret) + return ret; + + return fdtdec_add_reserved_memory(new_blob, "gap2", &gap2, NULL, 0, + NULL, flags); +} + +int ft_board_setup(void *blob, struct bd_info *bd) +{ + return rock5b_add_reserved_memory_fdt_nodes(blob); +} +#endif |