FreeCalypso > hg > freecalypso-tools
diff target-utils/pln-ppb-test/read_id.c @ 988:5a6019ed7e72
pln-ppb-test: implement read-id
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 03 Dec 2023 00:04:18 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/target-utils/pln-ppb-test/read_id.c Sun Dec 03 00:04:18 2023 +0000 @@ -0,0 +1,28 @@ +/* + * read-id (Autoselect) command + */ + +#include <sys/types.h> +#include "types.h" + +void +cmd_read_id(argbulk) + char *argbulk; +{ + char *argv[2]; + u_long addr; + + if (parse_args(argbulk, 1, 1, argv, 0) < 0) + return; + if (parse_hexarg(argv[0], 8, &addr) < 0) { + printf("ERROR: argument must be a valid 32-bit hex address\n"); + return; + } + if (addr & 0xFFFF) { + printf("ERROR: address is not on 64 KiB boundary\n"); + return; + } + *(volatile u16 *)(addr + 0xAAA) = 0xAA; + *(volatile u16 *)(addr + 0x554) = 0x55; + *(volatile u16 *)(addr + 0xAAA) = 0x90; +}