[MIPS] Add CFE support to BCM47XX

Add CFE support to the BCM47XX code.  That includes querying CFE environment
variables as well as using CFE to print messages before the serial port is
initialized (early printk).
    
Signed-off-by: Aurelien Jarno <aurel32@farad.aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 48 insertions, 3 deletions

diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index dfc580a..f48aa5a 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -27,9 +27,11 @@
 
 #include <linux/types.h>
 #include <linux/ssb/ssb.h>
+#include <asm/bootinfo.h>
 #include <asm/reboot.h>
 #include <asm/time.h>
 #include <bcm47xx.h>
+#include <asm/fw/cfe/cfe_api.h>
 
 struct ssb_bus ssb_bcm47xx;
 EXPORT_SYMBOL(ssb_bcm47xx);
@@ -53,12 +55,55 @@ static void bcm47xx_machine_halt(void)
 		cpu_relax();
 }
 
+static void str2eaddr(char *str, char *dest)
+{
+	int i = 0;
+
+	if (str == NULL) {
+		memset(dest, 0, 6);
+		return;
+	}
+
+	for (;;) {
+		dest[i++] = (char) simple_strtoul(str, NULL, 16);
+		str += 2;
+		if (!*str++ || i == 6)
+			break;
+	}
+}
+
 static int bcm47xx_get_invariants(struct ssb_bus *bus,
 				   struct ssb_init_invariants *iv)
 {
-	/* TODO: fill ssb_init_invariants using boardtype/boardrev
-	 * CFE environment variables.
-	 */
+	char buf[100];
+
+	/* Fill boardinfo structure */
+	memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
+
+	if (cfe_getenv("boardvendor", buf, sizeof(buf)) >= 0)
+		iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
+	if (cfe_getenv("boardtype", buf, sizeof(buf)) >= 0)
+		iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
+	if (cfe_getenv("boardrev", buf, sizeof(buf)) >= 0)
+		iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
+
+	/* Fill sprom structure */
+	memset(&(iv->sprom), 0, sizeof(struct ssb_sprom));
+	iv->sprom.revision = 3;
+
+	if (cfe_getenv("et0macaddr", buf, sizeof(buf)) >= 0)
+		str2eaddr(buf, iv->sprom.r1.et0mac);
+	if (cfe_getenv("et1macaddr", buf, sizeof(buf)) >= 0)
+		str2eaddr(buf, iv->sprom.r1.et1mac);
+	if (cfe_getenv("et0phyaddr", buf, sizeof(buf)) >= 0)
+		iv->sprom.r1.et0phyaddr = simple_strtoul(buf, NULL, 10);
+	if (cfe_getenv("et1phyaddr", buf, sizeof(buf)) >= 0)
+		iv->sprom.r1.et1phyaddr = simple_strtoul(buf, NULL, 10);
+	if (cfe_getenv("et0mdcport", buf, sizeof(buf)) >= 0)
+		iv->sprom.r1.et0mdcport = simple_strtoul(buf, NULL, 10);
+	if (cfe_getenv("et1mdcport", buf, sizeof(buf)) >= 0)
+		iv->sprom.r1.et1mdcport = simple_strtoul(buf, NULL, 10);
+
 	return 0;
 }