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| author | Bin Meng <bmeng.cn@gmail.com> | 2020-03-17 17:59:42 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2020-03-18 07:10:14 +0300 |
| commit | 6af55769eb8cd5b9c7fdcd959586e0bc0fce3994 (patch) | |
| tree | e73e27ae65e4baab3c9b19e38155ecef29fce88b /lib/utils/fdt | |
| parent | 666be6d62beffc380faf8700cc532142222826d8 (diff) | |
| download | opensbi-6af55769eb8cd5b9c7fdcd959586e0bc0fce3994.tar.xz | |
lib: utils: Move PLIC DT fix up codes to fdt_helper.c
Now that we have a dedicated fdt_helper.c file for DT releated
helper routines, move plic_fdt_fixup() codes from plic.c to
fdt_helper.c and rename it to fdt_plic_fixup() at the same time,
to keep name consistency in the same file.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Diffstat (limited to 'lib/utils/fdt')
| -rw-r--r-- | lib/utils/fdt/fdt_helper.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/utils/fdt/fdt_helper.c b/lib/utils/fdt/fdt_helper.c index d95a056..fcae968 100644 --- a/lib/utils/fdt/fdt_helper.c +++ b/lib/utils/fdt/fdt_helper.c @@ -12,6 +12,31 @@ #include <sbi/sbi_platform.h> #include <sbi/sbi_scratch.h> +void fdt_plic_fixup(void *fdt, const char *compat) +{ + u32 *cells; + int i, cells_count; + int plic_off; + + plic_off = fdt_node_offset_by_compatible(fdt, 0, compat); + if (plic_off < 0) + return; + + cells = (u32 *)fdt_getprop(fdt, plic_off, + "interrupts-extended", &cells_count); + if (!cells) + return; + + cells_count = cells_count / sizeof(u32); + if (!cells_count) + return; + + for (i = 0; i < (cells_count / 2); i++) { + if (fdt32_to_cpu(cells[2 * i + 1]) == IRQ_M_EXT) + cells[2 * i + 1] = cpu_to_fdt32(0xffffffff); + } +} + /** * We use PMP to protect OpenSBI firmware to safe-guard it from buggy S-mode * software, see pmp_init() in lib/sbi/sbi_hart.c. The protected memory region |