1 files changed, 108 insertions, 0 deletions
diff --git a/post/board/lwmon5/dspic.c b/post/board/lwmon5/dspic.c
new file mode 100644
index 0000000..897a852
--- /dev/null
+++ b/post/board/lwmon5/dspic.c
@@ -0,0 +1,108 @@
+/*
+ * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com
+ *
+ * Developed for DENX Software Engineering GmbH
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_POST
+
+/* There are two tests for dsPIC currently implemented:
+ * 1. dsPIC ready test. Done in board_early_init_f(). Only result verified here.
+ * 2. dsPIC POST result test.  This test gets dsPIC POST codes and version.
+ */
+
+#include <post.h>
+
+#include <i2c.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define DSPIC_POST_ERROR_REG	0x800
+#define DSPIC_SYS_ERROR_REG	0x802
+#define DSPIC_VERSION_REG	0x804
+
+#if CONFIG_POST & CFG_POST_BSPEC1
+
+/* Verify that dsPIC ready test done early at hw init passed ok */
+int dspic_init_post_test(int flags)
+{
+	if (in_be32((void *)CFG_DSPIC_TEST_ADDR) & CFG_DSPIC_TEST_MASK) {
+		post_log("dsPIC init test failed\n");
+		return 1;
+	}
+
+	return 0;
+}
+
+#endif /* CONFIG_POST & CFG_POST_BSPEC1 */
+
+#if CONFIG_POST & CFG_POST_BSPEC2
+/* Read a register from the dsPIC. */
+int dspic_read(ushort reg)
+{
+	uchar buf[2];
+
+	if (i2c_read(CFG_I2C_DSPIC_IO_ADDR, reg, 2, buf, 2))
+		return -1;
+
+	return (uint)((buf[0] << 8) | buf[1]);
+}
+
+/* Verify error codes regs, display version */
+int dspic_post_test(int flags)
+{
+	int data;
+	int ret = 0;
+
+	post_log("\n");
+	data = dspic_read(DSPIC_VERSION_REG);
+	if (data == -1) {
+		post_log("dsPIC : failed read version\n");
+		ret = 1;
+	} else {
+		post_log("dsPIC version: %u.%u\n",
+			(data >> 8) & 0xFF, data & 0xFF);
+	}
+
+	data = dspic_read(DSPIC_POST_ERROR_REG);
+	if (data != 0) ret = 1;
+	if (data == -1) {
+		post_log("dsPIC : failed read POST code\n");
+	} else {
+		post_log("dsPIC POST code 0x%04X\n", data);
+	}
+
+	data = dspic_read(DSPIC_SYS_ERROR_REG);
+	if (data != 0) ret = 1;
+	if (data == -1) {
+		post_log("dsPIC : failed read system error\n");
+	} else {
+		post_log("dsPIC SYS-ERROR code: 0x%04X\n", data);
+	}
+
+	return ret;
+}
+
+#endif /* CONFIG_POST & CFG_POST_BSPEC2 */
+#endif /* CONFIG_POST */