Support for Loongson-2F (MIPS) flashing

Corresponding to flashrom svn r1183.

Signed-off-by: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

2 files changed, 52 insertions, 1 deletions

diff --git a/internal.c b/internal.c
index 497ce6cc..b9b5a4bf 100644
--- a/internal.c
+++ b/internal.c
@@ -244,7 +244,7 @@ int internal_init(void)
 	 * The error code might have been a warning only.
 	 * Besides that, we don't check the board enable return code either.
 	 */
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined (__mips)
 	return 0;
 #else
 	msg_perr("Your platform is not supported yet for the internal "
diff --git a/processor_enable.c b/processor_enable.c
index 245975e8..74caedc5 100644
--- a/processor_enable.c
+++ b/processor_enable.c
@@ -37,8 +37,59 @@ int processor_flash_enable(void)
 
 #else
 
+#if defined (__MIPSEL__) && defined (__linux)
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+static int is_loongson(void)
+{
+	FILE *cpuinfo;
+	cpuinfo = fopen("/proc/cpuinfo", "rb");
+	if (!cpuinfo)
+		return 0;
+	while (!feof(cpuinfo)) {
+		char line[512], *ptr;
+		if (fgets(line, sizeof(line), cpuinfo) == NULL)
+			break;
+		ptr = line;
+		while (*ptr && isspace(*ptr))
+			ptr++;
+		/* "cpu" part appears only with some Linux versions.  */
+		if (strncmp(ptr, "cpu", sizeof("cpu") - 1) == 0)
+			ptr += sizeof("cpu") - 1;
+		while (*ptr && isspace(*ptr))
+			ptr++;
+		if (strncmp(ptr, "model", sizeof("model") - 1) != 0)
+			continue;
+		ptr += sizeof("model") - 1;
+		while (*ptr && isspace(*ptr))
+			ptr++;
+		if (*ptr != ':')
+			continue;
+		ptr++;
+		while (*ptr && isspace(*ptr))
+			ptr++;
+		fclose(cpuinfo);
+		return (strncmp(ptr, "ICT Loongson-2 V0.3",
+				sizeof("ICT Loongson-2 V0.3") - 1) == 0)
+		    || (strncmp(ptr, "Godson2 V0.3  FPU V0.1",
+				sizeof("Godson2 V0.3  FPU V0.1") - 1) == 0);
+	}
+	fclose(cpuinfo);
+	return 0;
+}
+#endif
+
 int processor_flash_enable(void)
 {
+	/* FIXME: detect loongson on FreeBSD and OpenBSD as well.  */
+#if defined (__MIPSEL__) && defined (__linux)
+	if (is_loongson()) {
+		flashbase = 0x1fc00000;
+		return 0;
+	}
+#endif
 	/* Not implemented yet. Oh well. */
 	return 1;
 }