lwmon5: add memory-pattern-test to FPGA POST.
diff --git a/post/board/lwmon5/fpga.c b/post/board/lwmon5/fpga.c
index b48390b..ef641d7 100644
--- a/post/board/lwmon5/fpga.c
+++ b/post/board/lwmon5/fpga.c
@@ -41,6 +41,15 @@
#if CONFIG_POST & CFG_POST_BSPEC3
+/* Testpattern for fpga memorytest */
+static uint pattern[] = {
+ 0x55555555,
+ 0xAAAAAAAA,
+ 0xAA5555AA,
+ 0x55AAAA55,
+ 0x0
+};
+
static int one_scratch_test(uint value)
{
uint read_value;
@@ -60,9 +69,42 @@
return ret;
}
+/* FPGA Memory-pattern-test */
+static int fpga_mem_test(void * address)
+{
+ int ret = 1;
+ uint read_value;
+ uint old_value;
+ uint i = 0;
+ /* save content */
+ old_value = in_be32(address);
+
+ while (pattern[i] != 0) {
+ out_be32(address, pattern[i]);
+ /* read other location (protect against data lines capacity) */
+ ret = in_be16((void *)FPGA_VERSION_REG);
+ /* verify test pattern */
+ read_value = in_be32(address);
+
+ if (read_value != pattern[i]) {
+ post_log("FPGA Memory test failed.");
+ post_log(" write %08X, read %08X at address %08X\n",
+ pattern[i], read_value, address);
+ ret = 1;
+ goto out;
+ }
+ i++;
+ }
+
+ ret = 0;
+out:
+ out_be32(address, old_value);
+ return ret;
+}
/* Verify FPGA, get version & memory size */
int fpga_post_test(int flags)
{
+ uint address;
uint old_value;
ushort version;
uint read_value;
@@ -88,6 +130,14 @@
read_value = get_ram_size((void *)CFG_FPGA_BASE_1, 0x4000);
post_log("FPGA RAM size: %d bytes\n", read_value);
+ for (address = 0; address < 0x1000; address++) {
+ if (fpga_mem_test((void *)(FPGA_RAM_START + 4*address)) == 1) {
+ ret = 1;
+ goto out;
+ }
+ }
+
+out:
return ret;
}