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Revert "kboot: move SEPFW to initrd before booting"

Browse source 
We've decided this needs to go via reserved-ranges, not in the
initramfs.

This reverts commit 6afe9ebaf9.
This commit is contained in:
Hector Martin 2021-08-23 15:26:39 +09:00
parent c2c6da3df2
commit 68c1f1c1a6
2 changed files with 1 additions and 79 deletions
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79
src/kboot.c
View file

@ -3,7 +3,6 @@
#include "kboot.h"
#include "adt.h"
#include "assert.h"
#include "cpio.h"
#include "exception.h"
#include "malloc.h"
#include "memory.h"
@ -22,8 +21,7 @@ static char *bootargs = NULL;
static void *initrd_start = NULL;
static size_t initrd_size = 0;
#define DT_ALIGN 16384
#define INITRD_ALIGN 65536
#define DT_ALIGN 16384
#define bail(...) \
do { \
@ -308,9 +306,6 @@ int kboot_prepare_dt(void *fdt)
dt = NULL;
}
if (kboot_prepare_fw() < 0)
bail("FDT: couldn't prepare firmware.");
dt_bufsize = fdt_totalsize(fdt);
assert(dt_bufsize);
@ -343,78 +338,6 @@ int kboot_prepare_dt(void *fdt)
return 0;
}
static int kboot_prepare_sepfw(struct cpio *c)
{
int adt_path[8];
int adt_offset;
adt_offset = adt_path_offset_trace(adt, "/chosen/memory-map", adt_path);
if (adt_offset < 0) {
printf("kboot: Error getting /chosen/memory-map node\n");
return -1;
}
u64 base;
u64 sz;
if (adt_get_reg(adt, adt_path, "SEPFW", 0, &base, &sz) < 0) {
printf("kboot: Error getting SEPFW\n");
return -1;
}
if (cpio_add_file(c, "lib/firmware/apple/sepfw.bin", (const u8 *)base, sz) < 0) {
printf("kboot: unable to add lib/firmware/apple/sepfw.bin\n");
return -1;
}
return 0;
}
int kboot_prepare_fw(void)
{
struct cpio *c = cpio_init();
u8 *cpio_start = NULL;
u8 *new_initrd_start = NULL;
size_t cpio_size = 0;
u32 new_initrd_size = 0;
if (cpio_add_dir(c, "lib") < 0)
goto err;
if (cpio_add_dir(c, "lib/firmware") < 0)
goto err;
if (cpio_add_dir(c, "lib/firmware/apple") < 0)
goto err;
if (kboot_prepare_sepfw(c) < 0)
printf("kboot: no SEPFW found.\n");
cpio_size = cpio_get_size(c);
new_initrd_size = cpio_size + ALIGN_UP(initrd_size, 4);
new_initrd_start = memalign(INITRD_ALIGN, new_initrd_size);
if (!new_initrd_start) {
printf("kboot: couldn't allocate initrd buffer\n");
goto err;
}
memcpy(new_initrd_start, initrd_start, initrd_size);
cpio_start = new_initrd_start + ALIGN_UP(initrd_size, 4);
size_t res = cpio_finalize(c, cpio_start, cpio_size);
if (res != cpio_size) {
printf("kboot: unexpected cpio_finalize size: %lu should be %lu\n", res, cpio_size);
goto err;
}
initrd_start = new_initrd_start;
initrd_size = new_initrd_size;
cpio_free(c);
return 0;
err:
free(new_initrd_start);
cpio_free(c);
return -1;
}
int kboot_boot(void *kernel)
{
usb_init();

1
src/kboot.h
View file

@ -19,7 +19,6 @@ struct kernel_header {
void kboot_set_initrd(void *start, size_t size);
void kboot_set_bootargs(const char *ba);
int kboot_prepare_fw(void);
int kboot_prepare_dt(void *fdt);
int kboot_boot(void *kernel);