From f14ae4180a37cf05c6bcfa5d55cc2955e920e1e2 Mon Sep 17 00:00:00 2001 From: Sascha Laue Date: Thu, 19 Aug 2010 09:38:56 +0200 Subject: ppc4xx: Big lwmon5 board support rework/update This patch brings the lwmon5 board support up-to-date. Here a summary of the changes: lwmon5 board port related: - GPIO's changed to control the LSB transmitter - Reset USB PHY's upon power-up - Enable CAN upon power-up - USB init error workaround (errata CHIP_6) - EBC: Enable burstmode and modify the timings for the GDC memory - EBC: Speed up NOR flash timings lwmon5 board POST related: - Add FPGA memory test - Add GDC memory test - DSP POST reworked - SYSMON POST: Fix handling of negative temperatures - Add output for sysmon1 POST - HW-watchdog min. time test reworked Additionally some coding-style changes were done. Signed-off-by: Sascha Laue Signed-off-by: Stefan Roese --- post/board/lwmon5/gdc.c | 308 ++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 296 insertions(+), 12 deletions(-) (limited to 'post/board/lwmon5/gdc.c') diff --git a/post/board/lwmon5/gdc.c b/post/board/lwmon5/gdc.c index eb16e36fcb..719194b5d9 100644 --- a/post/board/lwmon5/gdc.c +++ b/post/board/lwmon5/gdc.c @@ -28,18 +28,39 @@ */ #include - +#include #include +#include DECLARE_GLOBAL_DATA_PTR; -#define GDC_SCRATCH_REG 0xC1FF8044 -#define GDC_VERSION_REG 0xC1FF8084 -#define GDC_RAM_START 0xC0000000 -#define GDC_RAM_END 0xC2000000 +#define GDC_SCRATCH_REG 0xC1FF8044 +#define GDC_VERSION_REG 0xC1FF8084 +#define GDC_HOST_BASE 0xC1FC0000 +#define GDC_RAM_START 0xC0000000 +#define GDC_RAM_END (GDC_HOST_BASE - 1) +#define GDC_RAM_SIZE (GDC_RAM_END - GDC_RAM_START) #if CONFIG_POST & CONFIG_SYS_POST_BSPEC4 +const static unsigned long pattern[] = { + 0xffffffff, + 0xaaaaaaaa, + 0xcccccccc, + 0xf0f0f0f0, + 0xff00ff00, + 0xffff0000, + 0x0000ffff, + 0x00ff00ff, + 0x0f0f0f0f, + 0x33333333, + 0x55555555, + 0x00000000 +}; + +const static unsigned long otherpattern = 0x01234567; + +/* test write/read og a given LIME Register */ static int gdc_test_reg_one(uint value) { int ret; @@ -53,17 +74,229 @@ static int gdc_test_reg_one(uint value) read_value = in_be32((void *)GDC_SCRATCH_REG); if (read_value != value) { post_log("GDC SCRATCH test failed write %08X, read %08X\n", - value, read_value); + value, read_value); } return (read_value != value); } -/* Verify GDC, get memory size */ +/* test with a given static 32 bit pattern in a given memory addressrange */ +static int gdc_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("GDC Memory error at %08x, " + "wrote %08x, read %08x !\n", + mem + i, val, readback); + ret = -1; + break; + } + if (i % 1024 == 0) + WATCHDOG_RESET(); + } + + return ret; +} + +/* test with dynamic 32 bit pattern in a given memory addressrange */ +static int gdc_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("GDC 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; +} + +/* test with dynamic 32 bit pattern in a given memory addressrange */ +static int gdc_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("GDC Memory error at %08x, " + "wrote %08x, read %08x !\n", + mem + i, i, readback); + ret = -1; + break; + } + if (i % 1024 == 0) + WATCHDOG_RESET(); + } + + return ret; +} + +/* test with dynamic 32 bit pattern in a given memory addressrange */ +static int gdc_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("GDC Memory error at %08x, " + "wrote %08x, read %08x !\n", + mem + i, ~i, readback); + ret = -1; + break; + } + if (i % 1024 == 0) + WATCHDOG_RESET(); + } + + return ret; +} + +/* do some patterntests in a given addressrange */ +int gdc_mem_test(ulong *start, ulong size) +{ + int ret = 0; + + /* + * check addressrange and do different static and dynamic + * pattern tests with it. + */ + if (((void *)start) + size <= (void *)GDC_RAM_END) { + if (ret == 0) + ret = gdc_post_test1(start, size, 0x00000000); + + if (ret == 0) + ret = gdc_post_test1(start, size, 0xffffffff); + + if (ret == 0) + ret = gdc_post_test1(start, size, 0x55555555); + + if (ret == 0) + ret = gdc_post_test1(start, size, 0xaaaaaaaa); + + if (ret == 0) + ret = gdc_post_test2(start, size); + + if (ret == 0) + ret = gdc_post_test3(start, size); + + if (ret == 0) + ret = gdc_post_test4(start, size); + } + + return ret; +} + +/* test function of gdc memory addresslines*/ +static int gdc_post_addrline(ulong *address, ulong *base, ulong size) +{ + ulong *target; + ulong *end; + ulong readback = 0; + ulong xor = 0; + int ret = 0; + + end = (ulong *)((ulong)base + size); + + for (xor = sizeof(long); xor > 0; xor <<= 1) { + target = (ulong *)((ulong)address ^ xor); + if ((target >= base) && (target < end)) { + *address = ~*target; + readback = *target; + } + + if (readback == *address) { + post_log("GDC Memory (address line) error at %08x" + "XOR value %08x !\n", + address, target , xor); + ret = -1; + break; + } + } + + return ret; +} + +static int gdc_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("GDC Memory (date line) error at %08x, " + "wrote %08x, read %08x !\n", + address, pattern[i], temp32); + ret = 1; + } + } + + return ret; +} + +/* Verify GDC, get memory size, verify GDC memory */ int gdc_post_test(int flags) { - uint old_value; - int ret = 0; + uint old_value; + int i = 0; + int ret = 0; post_log("\n"); old_value = in_be32((void *)GDC_SCRATCH_REG); @@ -84,13 +317,64 @@ int gdc_post_test(int flags) old_value = in_be32((void *)GDC_VERSION_REG); post_log("GDC chip version %u.%u, year %04X\n", - (old_value >> 8) & 0xFF, old_value & 0xFF, - (old_value >> 16) & 0xFFFF); + (old_value >> 8) & 0xFF, old_value & 0xFF, + (old_value >> 16) & 0xFFFF); old_value = get_ram_size((void *)GDC_RAM_START, - GDC_RAM_END - GDC_RAM_START); + 0x02000000); + + debug("GDC RAM size (ist): %d bytes\n", old_value); + debug("GDC RAM size (soll): %d bytes\n", GDC_RAM_SIZE); post_log("GDC RAM size: %d bytes\n", old_value); + /* Test SDRAM datalines */ + if (gdc_post_dataline((ulong *)GDC_RAM_START)) { + ret = 1; + goto out; + } + WATCHDOG_RESET(); + + /* Test SDRAM adresslines */ + if (gdc_post_addrline((ulong *)GDC_RAM_START, + (ulong *)GDC_RAM_START, GDC_RAM_SIZE)) { + ret = 1; + goto out; + } + WATCHDOG_RESET(); + if (gdc_post_addrline((ulong *)GDC_RAM_END - sizeof(long), + (ulong *)GDC_RAM_START, GDC_RAM_SIZE)) { + ret = 1; + goto out; + } + WATCHDOG_RESET(); + + /* memory pattern test */ + debug("GDC Memory test (flags %8x:%8x)\n", flags, + POST_SLOWTEST | POST_MANUAL); + + if (flags & POST_MANUAL) { + debug("Full memory test\n"); + if (gdc_mem_test((ulong *)GDC_RAM_START, GDC_RAM_SIZE)) { + ret = 1; + goto out; + } + /* load splashscreen again */ + } else { + debug("smart memory test\n"); + for (i = 0; i < (GDC_RAM_SIZE >> 20) && ret == 0; i++) { + if (ret == 0) + ret = gdc_mem_test((ulong *)(GDC_RAM_START + + (i << 20)), + 0x800); + if (ret == 0) + ret = gdc_mem_test((ulong *)(GDC_RAM_START + + (i << 20) + 0xff800), + 0x800); + } + } + WATCHDOG_RESET(); + +out: return ret; } #endif /* CONFIG_POST & CONFIG_SYS_POST_BSPEC4 */ -- cgit