r385 - openbios-devel/arch/ppc/qemu

Author: laurent
Date: 2009-01-11 01:19:02 +0100 (Sun, 11 Jan 2009)
New Revision: 385

Modified:
   openbios-devel/arch/ppc/qemu/main.c
Log:
Add quik support (oldworld bootloader).

Load two first sectors of the partition and check quik signature ('QUIK').
If it is quik, execute it to boot.

Currently partition and parameter are hardcoded to "hd:2" and "Linux".

Modified: openbios-devel/arch/ppc/qemu/main.c
===================================================================
--- openbios-devel/arch/ppc/qemu/main.c	2009-01-11 00:01:40 UTC (rev 384)
+++ openbios-devel/arch/ppc/qemu/main.c	2009-01-11 00:19:02 UTC (rev 385)
@@ -234,7 +234,78 @@
     return ret;
 }

+#define QUIK_SECOND_BASEADDR	0x3e0000
+#define QUIK_FIRST_BASEADDR	0x3f4000
+#define QUIK_SECOND_SIZE	(QUIK_FIRST_BASEADDR - QUIK_SECOND_BASEADDR)
+#define QUIK_FIRST_INFO_OFF	0x2c8
+
+struct first_info {
+	char		quik_vers[8];
+	int		nblocks;
+	int		blocksize;
+	unsigned	second_base;
+	int		conf_part;
+	char		conf_file[32];
+	unsigned	blknos[64];
+};
+
+
 static void
+quik_startup( void )
+{
+	int fd;
+	int len;
+	const char *path = "hd:2";
+	union {
+		char buffer[1024];
+		int first_word;
+		struct {
+			char pad[QUIK_FIRST_INFO_OFF];
+			struct first_info fi;
+		} fi;
+	} u;
+	phandle_t ph;
+
+	if ((fd = open_io(path)) == -1) {
+		ELF_DPRINTF("Can't open %s\n", path);
+		return;
+	}
+
+	seek_io(fd, 0);
+	len = read_io(fd, u.buffer, sizeof(u));
+	close_io( fd );
+
+	if (len == -1) {
+		ELF_DPRINTF("Can't read %s\n", path);
+		return;
+	}
+
+	/* is it quik ? */
+
+	if (memcmp(u.fi.fi.quik_vers, "QUIK", 4))
+		return;
+
+	ph = find_dev("/options");
+	set_property(ph, "boot-device", path, strlen(path) + 1);
+	ph = find_dev("/chosen");
+	set_property(ph, "bootargs", "Linux", 6);
+
+	if( ofmem_claim( QUIK_FIRST_BASEADDR, len, 0 ) == -1 )
+		fatal_error("Claim failed!\n");
+
+	memcpy(QUIK_FIRST_BASEADDR, u.buffer, len);
+
+	/* quik fist level doesn't claim second level memory */
+
+	if( ofmem_claim( QUIK_SECOND_BASEADDR, QUIK_SECOND_SIZE, 0 ) == -1 )
+		fatal_error("Claim failed!\n");
+
+	call_elf(0, 0, QUIK_FIRST_BASEADDR);
+
+        return;
+}
+
+static void
 yaboot_startup( void )
 {
         static const char * const paths[] = { "hd:2,\ofclient", "hd:2,\yaboot" };
@@ -318,5 +389,6 @@
 {
    fword("update-chosen");
         check_preloaded_kernel();
+	quik_startup();
    yaboot_startup();
 }