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Diffstat (limited to 'post/board/lwmon5/fpga.c')
-rw-r--r--post/board/lwmon5/fpga.c308
1 files changed, 263 insertions, 45 deletions
diff --git a/post/board/lwmon5/fpga.c b/post/board/lwmon5/fpga.c
index 2b842908db2..30675484839 100644
--- a/post/board/lwmon5/fpga.c
+++ b/post/board/lwmon5/fpga.c
@@ -28,7 +28,7 @@
*/
#include <post.h>
-
+#include <watchdog.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -38,18 +38,28 @@ DECLARE_GLOBAL_DATA_PTR;
#define FPGA_RAM_START 0xC4200000
#define FPGA_RAM_END 0xC4203FFF
#define FPGA_STAT 0xC400000C
+#define FPGA_BUFFER 0x00800000
+#define FPGA_RAM_SIZE (FPGA_RAM_END - FPGA_RAM_START + 1)
#if CONFIG_POST & CONFIG_SYS_POST_BSPEC3
-/* Testpattern for fpga memorytest */
-static uint pattern[] = {
+const static unsigned long pattern[] = {
+ 0xffffffff,
+ 0xaaaaaaaa,
+ 0xcccccccc,
+ 0xf0f0f0f0,
+ 0xff00ff00,
+ 0xffff0000,
+ 0x0000ffff,
+ 0x00ff00ff,
+ 0x0f0f0f0f,
+ 0x33333333,
0x55555555,
- 0xAAAAAAAA,
- 0xAA5555AA,
- 0x55AAAA55,
- 0x0
+ 0x00000000,
};
+const static unsigned long otherpattern = 0x01234567;
+
static int one_scratch_test(uint value)
{
uint read_value;
@@ -62,51 +72,226 @@ static int one_scratch_test(uint value)
read_value = in_be32((void *)FPGA_SCRATCH_REG);
if (read_value != value) {
post_log("FPGA SCRATCH test failed write %08X, read %08X\n",
- value, read_value);
- ret = 1;
+ value, read_value);
+ ret = -1;
+ }
+
+ return ret;
+}
+
+static int fpga_post_test1(ulong *start, ulong size, ulong val)
+{
+ int ret = 0;
+ ulong i = 0;
+ ulong *mem = start;
+ ulong readback;
+
+ for (i = 0; i < size / sizeof(ulong); i++) {
+ mem[i] = val;
+ if (i % 1024 == 0)
+ WATCHDOG_RESET();
+ }
+
+ for (i = 0; i < size / sizeof(ulong); i++) {
+ readback = mem[i];
+ if (readback != val) {
+ post_log("FPGA Memory error at %08x, "
+ "wrote %08x, read %08x !\n",
+ mem + i, val, readback);
+ ret = -1;
+ break;
+ }
+ if (i % 1024 == 0)
+ WATCHDOG_RESET();
+ }
+ return ret;
+}
+
+static int fpga_post_test2(ulong *start, ulong size)
+{
+ int ret = 0;
+ ulong i = 0;
+ ulong *mem = start;
+ ulong readback;
+
+ for (i = 0; i < size / sizeof(ulong); i++) {
+ mem[i] = 1 << (i % 32);
+ if (i % 1024 == 0)
+ WATCHDOG_RESET();
+ }
+
+ for (i = 0; i < size / sizeof(ulong); i++) {
+ readback = mem[i];
+ if (readback != 1 << (i % 32)) {
+ post_log("FPGA Memory error at %08x, "
+ "wrote %08x, read %08x !\n",
+ mem + i, 1 << (i % 32), readback);
+ ret = -1;
+ break;
+ }
+ if (i % 1024 == 0)
+ WATCHDOG_RESET();
+ }
+
+ return ret;
+}
+
+static int fpga_post_test3(ulong *start, ulong size)
+{
+ int ret = 0;
+ ulong i = 0;
+ ulong *mem = start;
+ ulong readback;
+
+ for (i = 0; i < size / sizeof(ulong); i++) {
+ mem[i] = i;
+ if (i % 1024 == 0)
+ WATCHDOG_RESET();
+ }
+
+ for (i = 0; i < size / sizeof(ulong); i++) {
+ readback = mem[i];
+ if (readback != i) {
+ post_log("FPGA Memory error at %08x, "
+ "wrote %08x, read %08x !\n",
+ mem + i, i, readback);
+ ret = -1;
+ break;
+ }
+ if (i % 1024 == 0)
+ WATCHDOG_RESET();
+ }
+
+ return ret;
+}
+
+static int fpga_post_test4(ulong *start, ulong size)
+{
+ int ret = 0;
+ ulong i = 0;
+ ulong *mem = start;
+ ulong readback;
+
+ for (i = 0; i < size / sizeof(ulong); i++) {
+ mem[i] = ~i;
+ if (i % 1024 == 0)
+ WATCHDOG_RESET();
+ }
+
+ for (i = 0; i < size / sizeof(ulong); i++) {
+ readback = mem[i];
+ if (readback != ~i) {
+ post_log("FPGA Memory error at %08x, "
+ "wrote %08x, read %08x !\n",
+ mem + i, ~i, readback);
+ ret = -1;
+ break;
+ }
+ if (i % 1024 == 0)
+ WATCHDOG_RESET();
}
return ret;
}
/* FPGA Memory-pattern-test */
-static int fpga_mem_test(void * address)
+static int fpga_mem_test(void)
{
- 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);
+ int ret = 0;
+ ulong* start = (ulong *)FPGA_RAM_START;
+ ulong size = FPGA_RAM_SIZE;
+
+ if (ret == 0)
+ ret = fpga_post_test1(start, size, 0x00000000);
+
+ if (ret == 0)
+ ret = fpga_post_test1(start, size, 0xffffffff);
+
+ if (ret == 0)
+ ret = fpga_post_test1(start, size, 0x55555555);
+
+ if (ret == 0)
+ ret = fpga_post_test1(start, size, 0xaaaaaaaa);
+
+ WATCHDOG_RESET();
+
+ if (ret == 0)
+ ret = fpga_post_test2(start, size);
+
+ if (ret == 0)
+ ret = fpga_post_test3(start, size);
+
+ if (ret == 0)
+ ret = fpga_post_test4(start, size);
+
+ return ret;
+}
+
+
+
+/* Verify FPGA addresslines */
+static int fpga_post_addrline(ulong *address, ulong *base, ulong size)
+{
+ unsigned long *target;
+ unsigned long *end;
+ unsigned long readback;
+ unsigned long xor;
+ int ret = 0;
+
+ end = (ulong *)((ulong)base + size);
+ xor = 0;
+
+ for (xor = sizeof(ulong); xor > 0; xor <<= 1) {
+ target = (ulong*)((ulong)address ^ xor);
+ if ((target >= base) && (target < end)) {
+ *address = ~*target;
+ readback = *target;
+
+ if (readback == *address) {
+ post_log("Memory (address line) error at %08x"
+ "XOR value %08x !\n",
+ address, target, xor);
+ ret = -1;
+ break;
+ }
+ }
+ }
+
+ return ret;
+}
+
+/* Verify FPGA addresslines */
+static int fpga_post_dataline(ulong *address)
+{
+ unsigned long temp32 = 0;
+ int i = 0;
+ int ret = 0;
+
+ for (i = 0; i < ARRAY_SIZE(pattern); i++) {
+ *address = pattern[i];
+ /*
+ * Put a different pattern on the data lines: otherwise they
+ * may float long enough to read back what we wrote.
+ */
+ *(address + 1) = otherpattern;
+ temp32 = *address;
+
+ if (temp32 != pattern[i]){
+ post_log("Memory (date line) error at %08x, "
+ "wrote %08x, read %08x !\n",
+ address, pattern[i], temp32);
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 version;
uint read_value;
int ret = 0;
@@ -120,24 +305,57 @@ int fpga_post_test(int flags)
out_be32((void *)FPGA_SCRATCH_REG, old_value);
- version = in_be16((void *)FPGA_VERSION_REG);
- post_log("FPGA : version %u.%u\n",
- (version >> 8) & 0xFF, version & 0xFF);
+ version = in_be32((void *)FPGA_VERSION_REG);
+ post_log("FPGA version %u.%u\n",
+ (version >> 8) & 0xFF, version & 0xFF);
/* Enable write to FPGA RAM */
out_be32((void *)FPGA_STAT, in_be32((void *)FPGA_STAT) | 0x1000);
- read_value = get_ram_size((void *)CONFIG_SYS_FPGA_BASE_1, 0x4000);
- post_log("FPGA RAM size: %d bytes\n", read_value);
+ /* get RAM size */
+ read_value = get_ram_size((void *)CONFIG_SYS_FPGA_BASE_1, FPGA_RAM_SIZE);
+ post_log("FPGA RAM size %d bytes\n", read_value);
+ WATCHDOG_RESET();
- for (address = 0; address < 0x1000; address++) {
- if (fpga_mem_test((void *)(FPGA_RAM_START + 4*address)) == 1) {
- ret = 1;
- goto out;
- }
+ /* copy fpga memory to DDR2 RAM*/
+ memcpy((void *)FPGA_BUFFER,(void *)FPGA_RAM_START, FPGA_RAM_SIZE);
+ WATCHDOG_RESET();
+
+ /* Test datalines */
+ if (fpga_post_dataline((ulong *)FPGA_RAM_START)) {
+ ret = 1;
+ goto out;
+ }
+ WATCHDOG_RESET();
+
+ /* Test addresslines */
+ if (fpga_post_addrline((ulong *)FPGA_RAM_START,
+ (ulong *)FPGA_RAM_START, FPGA_RAM_SIZE)) {
+ ret = 1;
+ goto out;
}
+ WATCHDOG_RESET();
+ if (fpga_post_addrline((ulong *)FPGA_RAM_END - sizeof(long),
+ (ulong *)FPGA_RAM_START, FPGA_RAM_SIZE)) {
+ ret = 1;
+ goto out;
+ }
+ WATCHDOG_RESET();
+
+ /* Memory Pattern Test */
+ if (fpga_mem_test()) {
+ ret = 1;
+ goto out;
+ }
+ WATCHDOG_RESET();
+
+ /* restore memory */
+ memcpy((void *)FPGA_RAM_START,(void *)FPGA_BUFFER, FPGA_RAM_SIZE);
+ WATCHDOG_RESET();
out:
+ /* Disable write to RAM */
+ out_be32((void *)FPGA_STAT, in_be32((void *)FPGA_STAT) & 0xEFFF);
return ret;
}
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