no idea whot i changed lol

1 files changed, 28 insertions, 0 deletions

diff --git a/sys/dev/fdt/fdt.c b/sys/dev/fdt/fdt.c
new file mode 100644
index 0000000..4b132e2
--- /dev/null
+++ b/sys/dev/fdt/fdt.c
@@ -0,0 +1,28 @@
+#include <fdt.h>
+#include <sbi.h>
+#include <printf.h>
+#include <stdint.h>
+
+void    
+fdt_walk(struct fdt_header *header) 
+{
+	if (fdt_uint32(header->magic) != FDT_HEADER_MAGIC) {
+                printf("corrupted or invalid fdt");
+        }
+        printf("parsing fdt @%p...\n", header);
+        printf("header->totalsize: %d\n", fdt_uint32(header->totalsize));
+        printf("header->off_dt_struct: %d\n", fdt_uint32(header->off_dt_struct));
+        printf("header->off_dt_strings: %d\n", fdt_uint32(header->off_dt_strings));
+        printf("header->off_mem_rsvmap: %d\n", fdt_uint32(header->off_mem_rsvmap));
+        printf("header->version: %d\n", fdt_uint32(header->version));
+        printf("header->last_comp_version: %d\n", fdt_uint32(header->last_comp_version));
+        printf("header->boot_cpuid_phys: %d\n", fdt_uint32(header->boot_cpuid_phys));
+        printf("header->size_dt_strings: %d\n", fdt_uint32(header->size_dt_strings));
+        printf("header->size_dt_struct: %d\n",  fdt_uint32(header->size_dt_struct));
+
+        uint8_t *dts = header + fdt_uint32(header->off_dt_struct) + sizeof(uint32_t);
+        uint8_t *dtstr = header + fdt_uint32(header->off_dt_strings);
+        printf("parsing dt struct @%p...\n", dts);
+        printf(dts);
+}
+