dump mmcr registers on Elan sc520

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2202 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 103 insertions, 0 deletions

diff --git a/util/dump_mmcr/dumpmmcr.c b/util/dump_mmcr/dumpmmcr.c
new file mode 100644
index 0000000000..79a5f13cc3
--- /dev/null
+++ b/util/dump_mmcr/dumpmmcr.c
@@ -0,0 +1,103 @@
+/*
+ * dump mmcr of Elan520 uController (incomplete, see 22005b pg23+).
+ *
+ * Copyright 2006 coresystems GmbH 
+ *      Stefan Reinauer <stepan@coresystems.de> 
+ * 
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program; if not, write to the Free Software
+ *	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <getopt.h>
+
+int dump_mmcr(void)
+{
+	int fd_mem;
+	volatile uint8_t *mmcr;
+	unsigned long size=4096;
+
+	if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) {
+		perror("Can not open /dev/mem");
+		exit(1);
+	}
+
+	if (getpagesize() > size) {
+		size = getpagesize();
+	}
+	
+	mmcr = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
+		    fd_mem, (off_t) (0xFFFEF000));
+	
+	if (mmcr == MAP_FAILED) {
+		perror("Error MMAP /dev/mem");
+		exit(1);
+	}
+	
+	printf("ElanSC520 uC Rev. ID  : %04x\n",*(uint16_t *)mmcr);
+	printf("Am5x86 CPU Control    : %04x\n",*(uint16_t *)(mmcr+2));
+	printf("\n");
+	printf("SDRAM Control         : %04x\n",*(uint16_t *)(mmcr+0x10));
+	printf("SDRAM Timing Control  : %04x\n",*(uint16_t *)(mmcr+0x12));
+	printf("SDRAM Bank Config     : %04x\n",*(uint16_t *)(mmcr+0x14));
+	printf("SDRAM Bank 0-3 Ending : %04x\n",*(uint16_t *)(mmcr+0x18));
+	printf("ECC Control           : %04x\n",*(uint16_t *)(mmcr+0x20));
+	printf("ECC Status            : %04x\n",*(uint16_t *)(mmcr+0x21));
+	printf("ECC Check Bit Position: %04x\n",*(uint16_t *)(mmcr+0x22));
+	printf("ECC Check Code Test   : %04x\n",*(uint16_t *)(mmcr+0x23));
+	printf("ECC Single Bit ErrAddr: %04x\n",*(uint16_t *)(mmcr+0x24));
+	printf("ECC Multi Bit ErrAddr : %04x\n",*(uint16_t *)(mmcr+0x28));
+	printf("\n");
+	printf("SDRAM Buffer Control  : %04x\n",*(uint16_t *)(mmcr+0x40));
+	printf("\n");
+	printf("BOOTCS Control        : %04x\n",*(uint16_t *)(mmcr+0x50));
+	printf("BOOTCS1 Control       : %04x\n",*(uint16_t *)(mmcr+0x54));
+	printf("BOOTCS2 Control       : %04x\n",*(uint16_t *)(mmcr+0x56));
+	printf("\n");
+
+	printf("Adr Decode Control    : %02x\n",*(uint8_t *)(mmcr+0x80));
+	printf("WrProt Violation Stat.: %04x\n",*(uint16_t *)(mmcr+0x82));
+	printf("PAR 0                 : %08x\n",*(uint32_t *)(mmcr+0x88));
+	printf("PAR 1                 : %08x\n",*(uint32_t *)(mmcr+0x8C));
+	printf("PAR 2                 : %08x\n",*(uint32_t *)(mmcr+0x90));
+	printf("PAR 3                 : %08x\n",*(uint32_t *)(mmcr+0x94));
+	printf("PAR 4                 : %08x\n",*(uint32_t *)(mmcr+0x98));
+	printf("PAR 5                 : %08x\n",*(uint32_t *)(mmcr+0x9C));
+	printf("PAR 6                 : %08x\n",*(uint32_t *)(mmcr+0xA0));
+	printf("PAR 7                 : %08x\n",*(uint32_t *)(mmcr+0xA4));
+	printf("PAR 8                 : %08x\n",*(uint32_t *)(mmcr+0xA8));
+	printf("PAR 9                 : %08x\n",*(uint32_t *)(mmcr+0xAC));
+	printf("PAR 10                : %08x\n",*(uint32_t *)(mmcr+0xB0));
+	printf("PAR 11                : %08x\n",*(uint32_t *)(mmcr+0xB4));
+	printf("PAR 12                : %08x\n",*(uint32_t *)(mmcr+0xB8));
+	printf("PAR 13                : %08x\n",*(uint32_t *)(mmcr+0xBC));
+	printf("PAR 14                : %08x\n",*(uint32_t *)(mmcr+0xC0));
+	printf("PAR 15                : %08x\n",*(uint32_t *)(mmcr+0xC4));
+	
+	munmap((void *) mmcr, size);
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	dump_mmcr();
+	return 0;
+}