diff options
Diffstat (limited to 'lib/utils/fdt/fdt_helper.c')
| -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 |