72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
#include <stddef.h>
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#include <stdint.h>
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#include <stdnoreturn.h>
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#include <protos/chainload_next.h>
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#include <protos/chainload.h>
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#include <lib/misc.h>
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#include <lib/print.h>
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#include <lib/part.h>
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#if defined (BIOS)
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static void try(char *config, char *cmdline, struct volume *v) {
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(void)config;
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(void)cmdline;
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bios_chainload_volume(v);
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}
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#endif
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#if defined (UEFI)
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static void try(char *config, char *cmdline, struct volume *v) {
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for (int i = 0; i <= v->max_partition + 1; i++) {
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struct file_handle *image;
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struct volume *p = volume_get_by_coord(v->is_optical, v->index, i);
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bool old_cif = case_insensitive_fopen;
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case_insensitive_fopen = true;
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if ((image = fopen(p, "/EFI/BOOT/BOOTX64.EFI")) == NULL) {
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case_insensitive_fopen = old_cif;
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continue;
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}
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case_insensitive_fopen = old_cif;
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efi_chainload_file(config, cmdline, image);
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}
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}
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#endif
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noreturn void chainload_next(char *config, char *cmdline) {
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bool wrap = false;
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for (int i = boot_volume->is_optical ? 0 : (wrap = true, boot_volume->index + 1);
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boot_volume->is_optical ? true : i != boot_volume->index; i++) {
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struct volume *v = volume_get_by_coord(false, i, 0);
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if (v == NULL) {
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if (wrap) {
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i = 0;
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continue;
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} else {
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break;
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}
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}
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try(config, cmdline, v);
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}
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wrap = false;
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for (int i = boot_volume->is_optical ? (wrap = true, boot_volume->index + 1) : 0;
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boot_volume->is_optical ? i != boot_volume->index : true; i++) {
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struct volume *v = volume_get_by_coord(true, i, 0);
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if (v == NULL) {
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if (wrap) {
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i = 0;
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continue;
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} else {
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break;
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}
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}
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try(config, cmdline, v);
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}
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panic(true, "chainload_next: No other bootable device");
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}
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