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Diffstat (limited to 'post/board/lwmon5/dsp.c')
-rw-r--r--post/board/lwmon5/dsp.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/post/board/lwmon5/dsp.c b/post/board/lwmon5/dsp.c
index 0e6d908..913cd97 100644
--- a/post/board/lwmon5/dsp.c
+++ b/post/board/lwmon5/dsp.c
@@ -33,20 +33,37 @@
DECLARE_GLOBAL_DATA_PTR;
-#define DSP_STATUS_REG 0xC4000008
+#define DSP_STATUS_REG 0xC4000008
+#define FPGA_STATUS_REG 0xC400000C
int dsp_post_test(int flags)
{
+ uint old_value;
uint read_value;
int ret;
+ /* momorize fpga status */
+ old_value = in_be32((void *)FPGA_STATUS_REG);
+ /* enable outputs */
+ out_be32((void *)FPGA_STATUS_REG, 0x30);
+
+ /* generate sync signal */
+ out_be32((void *)DSP_STATUS_REG, 0x300);
+ udelay(5);
+ out_be32((void *)DSP_STATUS_REG, 0);
+ udelay(500);
+
+ /* read status */
ret = 0;
read_value = in_be32((void *)DSP_STATUS_REG) & 0x3;
- if (read_value != 0x3) {
+ if (read_value != 0x03) {
post_log("\nDSP status read %08X\n", read_value);
ret = 1;
}
+ /* restore fpga status */
+ out_be32((void *)FPGA_STATUS_REG, old_value);
+
return ret;
}