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-rw-r--r--com32/elflink/ldlinux/kernel.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/com32/elflink/ldlinux/kernel.c b/com32/elflink/ldlinux/kernel.c
new file mode 100644
index 00000000..f3ba37fa
--- /dev/null
+++ b/com32/elflink/ldlinux/kernel.c
@@ -0,0 +1,131 @@
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <console.h>
+#include <dprintf.h>
+#include <syslinux/loadfile.h>
+#include <syslinux/linux.h>
+#include <syslinux/pxe.h>
+#include "core.h"
+
+const char *globaldefault = NULL;
+const char *append = NULL;
+
+/* Will be called from readconfig.c */
+int new_linux_kernel(char *okernel, char *ocmdline)
+{
+ const char *kernel_name = NULL, *args = NULL;
+ struct initramfs *initramfs = NULL;
+ char *temp;
+ void *kernel_data;
+ size_t kernel_len, cmdline_len;
+ bool opt_quiet = false;
+ char *initrd_name, *cmdline;
+
+ dprintf("okernel = %s, ocmdline = %s", okernel, ocmdline);
+
+ if (okernel)
+ kernel_name = okernel;
+ else if (globaldefault)
+ kernel_name = globaldefault;
+
+ if (ocmdline)
+ args = ocmdline;
+ else if (append)
+ args = append;
+
+ cmdline_len = strlen("BOOT_IMAGE=") + strlen(kernel_name);
+ cmdline_len += 1; /* space between BOOT_IMAGE and args */
+ cmdline_len += strlen(args);
+ cmdline_len += 1; /* NUL-termination */
+
+ cmdline = malloc(cmdline_len);
+ if (!cmdline) {
+ printf("Failed to alloc memory for cmdline\n");
+ return 1;
+ }
+
+ sprintf(cmdline, "BOOT_IMAGE=%s %s", kernel_name, args);
+
+ /* "keeppxe" handling */
+#if IS_PXELINUX
+ extern char KeepPXE;
+
+ if (strstr(cmdline, "keeppxe"))
+ KeepPXE |= 1;
+#endif
+
+ if (strstr(cmdline, "quiet"))
+ opt_quiet = true;
+
+ if (!opt_quiet)
+ printf("Loading %s... ", kernel_name);
+
+ if (loadfile(kernel_name, &kernel_data, &kernel_len)) {
+ if (opt_quiet)
+ printf("Loading %s ", kernel_name);
+ printf("failed: ");
+ goto bail;
+ }
+
+ if (!opt_quiet)
+ printf("ok\n");
+
+ /* Find and load initramfs */
+ temp = strstr(cmdline, "initrd=");
+ if (temp) {
+ /* Initialize the initramfs chain */
+ initramfs = initramfs_init();
+ if (!initramfs)
+ goto bail;
+
+ temp += 6; /* strlen("initrd") */
+ do {
+ size_t n = 0;
+ char *p;
+
+ temp++; /* Skip = or , */
+
+ p = temp;
+ while (*p != ' ' && *p != ',' && *p) {
+ p++;
+ n++;
+ }
+
+ initrd_name = malloc(n + 1);
+ if (!initrd_name) {
+ printf("Failed to allocate space for initrd\n");
+ goto bail;
+ }
+
+ snprintf(initrd_name, n + 1, "%s", temp);
+ temp += n;
+
+ if (!opt_quiet)
+ printf("Loading %s...", initrd_name);
+
+ if (initramfs_load_archive(initramfs, initrd_name)) {
+ if (opt_quiet)
+ printf("Loading %s ", initrd_name);
+ free(initrd_name);
+ printf("failed: ");
+ goto bail;
+ }
+
+ free(initrd_name);
+
+ if (!opt_quiet)
+ printf("ok\n");
+ } while (*temp == ',');
+ }
+
+ /* This should not return... */
+ syslinux_boot_linux(kernel_data, kernel_len, initramfs, NULL, cmdline);
+ printf("Booting kernel failed: ");
+
+bail:
+ free(cmdline);
+ printf("%s\n", strerror(errno));
+ return 1;
+}