From 50e526d72f1fd9cb895d743a1353b54505b48025 Mon Sep 17 00:00:00 2001 From: Nathan Lee Date: Sun, 20 Sep 2026 21:12:49 -0500 Subject: add x86 support --- kernel/riscv/kernel.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'kernel/riscv/kernel.c') diff --git a/kernel/riscv/kernel.c b/kernel/riscv/kernel.c index 46de696..e38134c 100644 --- a/kernel/riscv/kernel.c +++ b/kernel/riscv/kernel.c @@ -1,5 +1,4 @@ #include -#include #include #include #include @@ -70,7 +69,7 @@ struct kernel_info *discover_arch(void *fdt) { } void kernel_main(size_t hart, void *fdt) { - printk("wkern version %s (Compiler %s, Linker %s)\n", VERSION, COMPILER_NAME, LINKER_NAME); + printk("wkern version %s (Compiler %s, Linker %s) on %s\n", VERSION, COMPILER_NAME, LINKER_NAME, ARCH_NAME); if (hart != 0) return; @@ -79,6 +78,16 @@ void kernel_main(size_t hart, void *fdt) { if (!kernel_info) { return; } + + + uint8_t *bitmap = kemalloc(kernel_info->mem_size / (8 * PAGE_SIZE)); + uintptr_t mem_start = (uintptr_t)kernel_info->mem_start; + uintptr_t initrd_start = (uintptr_t)kernel_info->initrd_start; + uintptr_t initrd_end = initrd_start + kernel_info->initrd_size; + for (; initrd_start <= initrd_end; initrd_start += PAGE_SIZE) { + uintptr_t offset = (initrd_start - mem_start) / PAGE_SIZE; + bitmap[offset / 8] = (uint8_t)(1u << (offset % 8)); + } } void kernel_trap() { -- cgit v1.2.3