diff options
Diffstat (limited to 'post/board/lwmon5/gdc.c')
-rw-r--r-- | post/board/lwmon5/gdc.c | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/post/board/lwmon5/gdc.c b/post/board/lwmon5/gdc.c deleted file mode 100644 index 9405e7d9ab..0000000000 --- a/post/board/lwmon5/gdc.c +++ /dev/null @@ -1,363 +0,0 @@ -/* - * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com - * - * Developed for DENX Software Engineering GmbH - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include <common.h> - -/* This test attempts to verify board GDC. A scratch register tested, then - * simple memory test (get_ram_size()) run over GDC memory. - */ - -#include <post.h> -#include <watchdog.h> -#include <asm/io.h> -#include <video.h> - -DECLARE_GLOBAL_DATA_PTR; - -#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) -{ - uint read_value; - - /* write test pattern */ - out_be32((void *)GDC_SCRATCH_REG, value); - /* read other location (protect against data lines capacity) */ - in_be32((void *)GDC_RAM_START); - /* verify test pattern */ - 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); - } - - return (read_value != value); -} - -/* 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 i = 0; - int ret = 0; - - post_log("\n"); - old_value = in_be32((void *)GDC_SCRATCH_REG); - - /* - * GPIOC2 register behaviour: the LIME graphics processor has a - * maximum of 5 GPIO ports that can be used in this hardware - * configuration. Thus only the bits for these 5 GPIOs can be - * activated in the GPIOC2 register. All other bits will always be - * read as zero. - */ - if (gdc_test_reg_one(0x00150015)) - ret = 1; - if (gdc_test_reg_one(0x000A000A)) - ret = 1; - - out_be32((void *)GDC_SCRATCH_REG, old_value); - - 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 = get_ram_size((void *)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 */ |