From: Sascha Laue sascha.laue@liebherr.com

--- post/board/lwmon5/fpga.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 50 insertions(+), 0 deletions(-)

diff --git a/post/board/lwmon5/fpga.c b/post/board/lwmon5/fpga.c index b48390b..b56ba89 100644 --- a/post/board/lwmon5/fpga.c +++ b/post/board/lwmon5/fpga.c @@ -41,6 +41,15 @@ DECLARE_GLOBAL_DATA_PTR;

#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 @@ static int one_scratch_test(uint value) 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; @@ -87,7 +129,15 @@ int fpga_post_test(int flags)

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; }