[LinuxBIOS] [PATCH] Geode com2 fix - coreboot

19 Jun 2007

-- 
Marc Jones
Senior Software Engineer
(970) 226-9684 Office
mailto:Marc.Jones@amd.com
http://www.amd.com/embeddedprocessors

The GPIOs used for UART2 RX and TX were reversed.

Signed-off-by: Marc Jones marc.jones@amd.com 

Index: LinuxBIOSv2/src/southbridge/amd/cs5536/cs5536.c
===================================================================

--- LinuxBIOSv2.orig/src/southbridge/amd/cs5536/cs5536.c	2007-06-18 17:35:37.000000000 -0600
+++ LinuxBIOSv2/src/southbridge/amd/cs5536/cs5536.c	2007-06-18 16:53:17.000000000 -0600
@@ -356,19 +356,19 @@
    	msr.lo |= sb->com2_irq << 28;
    	wrmsr(MDD_IRQM_YHIGH, msr);

-		/* GPIO3 - UART2_RX */
+		/* GPIO4 - UART2_RX */
    	/* Set: Output Enable  (0x4) */
-		outl(GPIOL_3_SET, gpio_addr + GPIOL_OUTPUT_ENABLE);
+		outl(GPIOL_4_SET, gpio_addr + GPIOL_OUTPUT_ENABLE);
    	/* Set: OUTAUX1 Select (0x10) */
-		outl(GPIOL_3_SET, gpio_addr + GPIOL_OUT_AUX1_SELECT);
+		outl(GPIOL_4_SET, gpio_addr + GPIOL_OUT_AUX1_SELECT);

-		/* GPIO4 - UART2_TX */
+		/* GPIO3 - UART2_TX */
    	/* Set: Input Enable   (0x20) */
-		outl(GPIOL_4_SET, gpio_addr + GPIOL_INPUT_ENABLE);
+		outl(GPIOL_3_SET, gpio_addr + GPIOL_INPUT_ENABLE);
    	/* Set: INAUX1 Select  (0x34) */
-		outl(GPIOL_4_SET, gpio_addr + GPIOL_IN_AUX1_SELECT);
+		outl(GPIOL_3_SET, gpio_addr + GPIOL_IN_AUX1_SELECT);

-		/* Set: GPIO 3 + 3 Pull Up         (0x18) */
+		/* Set: GPIO 3 and 4 Pull Up  (0x18) */
    	outl(GPIOL_3_SET | GPIOL_4_SET,
    	     gpio_addr + GPIOL_PULLUP_ENABLE);


    