90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
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static void write_phys(unsigned long addr, unsigned long value)
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{
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unsigned long *ptr;
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ptr = (void *)addr;
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*ptr = value;
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}
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static unsigned long read_phys(unsigned long addr)
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{
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unsigned long *ptr;
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ptr = (void *)addr;
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return *ptr;
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}
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void ram_fill(unsigned long start, unsigned long stop)
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{
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unsigned long addr;
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/*
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* Fill.
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*/
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print_debug("DRAM fill: ");
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print_debug_hex32(start);
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print_debug("-");
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print_debug_hex32(stop);
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print_debug("\r\n");
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for(addr = start; addr < stop ; addr += 4) {
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/* Display address being filled */
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if ((addr & 0xffff) == 0) {
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print_debug_hex32(addr);
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print_debug("\r");
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}
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write_phys(addr, addr);
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};
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/* Display final address */
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print_debug_hex32(addr);
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print_debug("\r\nDRAM filled\r\n");
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}
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void ram_verify(unsigned long start, unsigned long stop)
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{
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unsigned long addr;
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/*
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* Verify.
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*/
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print_debug("DRAM verify: ");
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print_debug_hex32(start);
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print_debug_char('-');
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print_debug_hex32(stop);
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print_debug("\r\n");
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for(addr = start; addr < stop ; addr += 4) {
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unsigned long value;
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/* Display address being tested */
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if ((addr & 0xffff) == 0) {
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print_debug_hex32(addr);
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print_debug("\r");
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}
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value = read_phys(addr);
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if (value != addr) {
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/* Display address with error */
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print_err_hex32(addr);
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print_err_char(':');
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print_err_hex32(value);
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print_err("\r\n");
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}
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}
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/* Display final address */
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print_debug_hex32(addr);
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print_debug("\r\nDRAM verified\r\n");
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}
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void ramcheck(unsigned long start, unsigned long stop)
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{
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int result;
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/*
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* This is much more of a "Is my DRAM properly configured?"
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* test than a "Is my DRAM faulty?" test. Not all bits
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* are tested. -Tyson
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*/
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print_debug("Testing DRAM : ");
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print_debug_hex32(start);
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print_debug("-");
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print_debug_hex32(stop);
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print_debug("\r\n");
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ram_fill(start, stop);
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ram_verify(start, stop);
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print_debug("Done.\n");
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}
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