Plug in e820 driver
diff --git a/src/lib/e820.c b/src/lib/e820.c
index 3bc230c7..1b092f72 100644
--- a/src/lib/e820.c
+++ b/src/lib/e820.c
@@ -21,10 +21,11 @@ static const char *e820_type(uint32_t type) {
}
}
-void init_e820(void) {
+int init_e820(void) {
struct rm_regs r = {0};
- for (size_t i = 0; i < E820_MAX_ENTRIES; i++) {
+ int entry_count;
+ for (int i = 0; i < E820_MAX_ENTRIES; i++) {
r.eax = 0xe820;
r.ecx = 24;
r.edx = 0x534d4150;
@@ -32,24 +33,27 @@ void init_e820(void) {
rm_int(0x15, &r, &r);
if (r.eflags & EFLAGS_CF) {
- e820_map[i].type = 0;
+ entry_count = i;
goto done;
}
if (!r.ebx) {
- e820_map[i+1].type = 0;
+ entry_count = ++i;
goto done;
}
}
print("e820: Too many entries!\n");
+ for (;;);
done:
- for (size_t i = 0; e820_map[i].type; i++) {
+ for (int i = 0; i < entry_count; i++) {
print("e820: [%X -> %X] : %X <%s>\n",
e820_map[i].base,
e820_map[i].base + e820_map[i].length,
e820_map[i].length,
e820_type(e820_map[i].type));
}
+
+ return entry_count;
}
diff --git a/src/lib/e820.h b/src/lib/e820.h
index b6fa599f..c0f7253d 100644
--- a/src/lib/e820.h
+++ b/src/lib/e820.h
@@ -14,6 +14,6 @@ struct e820_entry_t {
extern struct e820_entry_t e820_map[E820_MAX_ENTRIES];
-void init_e820(void);
+int init_e820(void);
#endif
diff --git a/src/protos/stivale.c b/src/protos/stivale.c
index 56200101..9bf393ad 100644
--- a/src/protos/stivale.c
+++ b/src/protos/stivale.c
@@ -4,6 +4,7 @@
#include <lib/elf.h>
#include <lib/blib.h>
#include <lib/acpi.h>
+#include <lib/e820.h>
#include <drivers/vbe.h>
struct stivale_header {
@@ -59,6 +60,9 @@ void stivale_load(struct echfs_file_handle *fd) {
elf_load(fd, &entry_point);
+ stivale_struct.memory_map_entries = (uint64_t)init_e820();
+ stivale_struct.memory_map_addr = (uint64_t)(size_t)e820_map;
+
stivale_struct.rsdp = (uint64_t)(size_t)get_rsdp();
print("stivale: RSDP at %X\n", stivale_struct.rsdp);
diff --git a/test/test.asm b/test/test.asm
index 283d5bf9..ac4921e6 100644
--- a/test/test.asm
+++ b/test/test.asm
@@ -24,7 +24,8 @@ _start:
mov rax, 'h e l l '
mov rbx, 'o w o '
mov rcx, 'r l d '
- mov [0xb8000], rax
- mov [0xb8008], rbx
- mov [0xb8010], rcx
+ mov rdx, [rdi+20]
+ mov [rdx], rax
+ mov [rdx+8], rbx
+ mov [rdx+16], rcx
jmp $
