From: notaz Date: Tue, 10 Mar 2009 20:27:31 +0000 (+0000) Subject: more commands X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=megadrive.git;a=commitdiff_plain;h=a35471cdc4f8d50d71f220f58155d18d12718dae more commands --- diff --git a/mx/linux/main.c b/mx/linux/main.c index e630e77..7565f5c 100644 --- a/mx/linux/main.c +++ b/mx/linux/main.c @@ -22,19 +22,29 @@ static const struct { /*****************************************************************************/ #define CMD_ATM_READY 0x22 -#define CMD_SEC_GET_NAME 'G' /* read filename */ +#define CMD_SEC_GET_NAME 'G' /* filename r/w */ +#define CMD_SEC_PUT_NAME 'P' +#define CMD_SEC_DEVID 'L' /* read flash device ID */ +#define CMD_SEC_ERASE 'E' +#define CMD_SEC_READY 'C' /* is flash ready? */ /* bus controllers */ #define CTL_DATA_BUS 0x55 #define CTL_ADDR_BUS 0xAA +#define W_COUNTER 0xA0 +#define W_CNT_WRITE 0x01 +#define W_CNT_READ 0x00 + #define FILENAME_ROM0 0 #define FILENAME_ROM1 1 #define FILENAME_RAM 2 typedef struct { u8 magic[4]; - u8 reserved[11]; + u8 reserved[8]; + u8 write_flag; + u8 reserved2[2]; u8 magic2; u8 mx_cmd; union { @@ -51,13 +61,17 @@ typedef struct { u8 which; } filename; struct { - u8 times_cmd; + u8 cmd; u8 action; - u8 cntb3; - u8 cntb2; - u8 cntb1; - u8 cntb0; - } times_write; + u8 b0; + u8 b1; + u8 b2; + u8 b3; + } write_cnt; + struct { + u8 which; + u8 dev_id; + } rom_id; }; u8 pad[8]; } dev_cmd_t; @@ -68,6 +82,28 @@ typedef struct { char names[56]; } dev_info_t; +typedef struct { + u32 start_addr; + u32 end_addr; + u32 page_size; +} page_table_t; + +static const page_table_t p_AM29LV320DB[] = +{ + { 0x000000, 0x00ffff, 0x002000 }, + { 0x010000, 0x3fffff, 0x010000 }, + { 0x000000, 0x000000, 0x000000 }, +}; + +static const page_table_t p_AM29LV320DT[] = +{ + { 0x000000, 0x3effff, 0x010000 }, + { 0x3f0000, 0x3fffff, 0x002000 }, + { 0x000000, 0x000000, 0x000000 }, +}; + +/*****************************************************************************/ + static void prepare_cmd(dev_cmd_t *dev_cmd, u8 cmd) { memset(dev_cmd, 0, sizeof(*dev_cmd)); @@ -77,26 +113,31 @@ static void prepare_cmd(dev_cmd_t *dev_cmd, u8 cmd) dev_cmd->mx_cmd = cmd; } -static int write_cmd(struct usb_dev_handle *dev, dev_cmd_t *cmd) +static int write_data(struct usb_dev_handle *dev, void *data, int len) { - int ret = usb_bulk_write(dev, 0x03, (char *)cmd, sizeof(*cmd), 2000); + int ret = usb_bulk_write(dev, 0x03, data, len, 2000); if (ret < 0) { fprintf(stderr, "failed to write:\n"); fprintf(stderr, "%s (%d)\n", usb_strerror(), ret); - } else if (ret != sizeof(*cmd)) - printf("write_cmd: wrote only %d of %d bytes\n", ret, sizeof(*cmd)); + } else if (ret != len) + printf("write_cmd: wrote only %d of %d bytes\n", ret, len); return ret; } -static int read_response(struct usb_dev_handle *dev, void *buff, int size) +static int write_cmd(struct usb_dev_handle *dev, dev_cmd_t *cmd) +{ + return write_data(dev, cmd, sizeof(*cmd)); +} + +static int read_data(struct usb_dev_handle *dev, void *buff, int size) { int ret = usb_bulk_read(dev, 0x82, buff, size, 2000); if (ret < 0) { fprintf(stderr, "failed to read:\n"); fprintf(stderr, "%s (%d)\n", usb_strerror(), ret); } else if (ret != size) - printf("read_response: read only %d of %d bytes\n", ret, size); + printf("read_data: read only %d of %d bytes\n", ret, size); return ret; } @@ -115,7 +156,7 @@ static int read_info(struct usb_dev_handle *device, u8 ctl_id) if (ret < 0) return ret; - ret = read_response(device, &info, sizeof(info)); + ret = read_data(device, &info, sizeof(info)); if (ret < 0) return ret; @@ -129,7 +170,7 @@ static int read_info(struct usb_dev_handle *device, u8 ctl_id) return 0; } -static int get_filename(struct usb_dev_handle *dev, char *dst, int len, u8 which) +static int read_filename(struct usb_dev_handle *dev, char *dst, int len, u8 which) { char buff[65]; dev_cmd_t cmd; @@ -143,7 +184,7 @@ static int get_filename(struct usb_dev_handle *dev, char *dst, int len, u8 which if (ret < 0) return ret; - ret = read_response(dev, buff, 64); + ret = read_data(dev, buff, 64); if (ret < 0) return ret; @@ -153,6 +194,160 @@ static int get_filename(struct usb_dev_handle *dev, char *dst, int len, u8 which return 0; } +static int write_filename(struct usb_dev_handle *dev, const char *fname, u8 which) +{ + dev_cmd_t cmd; + char buff[64]; + int ret, len; + + len = strlen(fname); + if (len > 63) + len = 63; + strncpy(buff, fname, len); + buff[len] = 0; + + prepare_cmd(&cmd, CMD_SEC_PUT_NAME); + cmd.filename.which = which; + + ret = write_cmd(dev, &cmd); + if (ret < 0) + return ret; + + return write_data(dev, buff, len + 1); +} + +static int read_w_counter(struct usb_dev_handle *dev, u32 *val) +{ + dev_cmd_t cmd; + u8 buff[16]; + int ret; + + prepare_cmd(&cmd, CMD_ATM_READY); + cmd.write_cnt.cmd = W_COUNTER; + cmd.write_cnt.action = W_CNT_READ; + + ret = write_cmd(dev, &cmd); + if (ret < 0) + return ret; + + ret = read_data(dev, buff, sizeof(buff)); + if (ret < 0) + return ret; + + *val = *(u32 *)buff; + return 0; +} + +static int read_flash_rom_id(struct usb_dev_handle *dev, u32 *val) +{ + dev_cmd_t cmd; + u8 buff[2]; + int ret; + + prepare_cmd(&cmd, CMD_SEC_DEVID); + cmd.write_flag = 1; /* XXX why? */ + cmd.rom_id.dev_id = 1; + cmd.rom_id.which = 0; + + ret = write_cmd(dev, &cmd); + if (ret < 0) + return ret; + + ret = read_data(dev, buff, sizeof(buff)); + if (ret < 0) + return ret; + + *val = *(u16 *)buff << 16; + + cmd.rom_id.which = 0; + ret = write_cmd(dev, &cmd); + if (ret < 0) + return ret; + + ret = read_data(dev, buff, sizeof(buff)); + if (ret < 0) + return ret; + + *val |= *(u16 *)buff; + return 0; +} + +static const page_table_t *get_page_table(u32 rom_id) +{ + switch (rom_id) { + case 0x0100F922: + return p_AM29LV320DB; + case 0x0100F422: + return p_AM29LV320DT; + default: + fprintf(stderr, "unrecognized ROM id: %08x\n", rom_id); + } + + return NULL; +} + +static int get_page_size(const page_table_t *table, u32 addr, u32 *size) +{ + const page_table_t *t; + + for (t = table; t->end_addr != 0; t++) { + if (addr >= t->start_addr && addr <= t->end_addr) { + *size = t->page_size; + return 0; + } + } + + if (addr == t[-1].end_addr + 1) + return 1; /* last */ + + fprintf(stderr, "get_page_size: failed on addr %06x\n", addr); + return -1; +} + +static int erase_sector(struct usb_dev_handle *dev, u32 addr) +{ + dev_cmd_t cmd; + u8 buff[10]; + int i, ret; + + prepare_cmd(&cmd, CMD_SEC_ERASE); + cmd.write_flag = 1; + cmd.rom_rw.addrb2 = addr >> 16; + cmd.rom_rw.addrb1 = addr >> 8; + cmd.rom_rw.addrb0 = addr; + + ret = write_cmd(dev, &cmd); + if (ret < 0) + return ret; + + ret = read_data(dev, buff, sizeof(buff)); + if (ret < 0) + return ret; + + prepare_cmd(&cmd, CMD_SEC_READY); + cmd.rom_rw.addrb2 = addr >> 16; + cmd.rom_rw.addrb1 = addr >> 8; + cmd.rom_rw.addrb0 = addr; + + for (i = 0; i < 100; i++) { + ret = write_cmd(dev, &cmd); + if (ret < 0) + return ret; + + ret = read_data(dev, buff, sizeof(buff)); + if (ret < 0) + return ret; + + if (ret > 4 && buff[4] == 1) + break; + + usleep(50); + } + + printf("i = %d\n", i); + return 0; +} + static usb_dev_handle *get_device(void) { struct usb_dev_handle *handle; @@ -228,6 +423,7 @@ int main(int argc, char *argv[]) { struct usb_dev_handle *device; char fname[65]; + u32 counter, rom_id; int ret; usb_init(); @@ -246,17 +442,25 @@ int main(int argc, char *argv[]) if (ret < 0) goto end; - ret = get_filename(device, fname, sizeof(fname), FILENAME_ROM0); + ret = read_filename(device, fname, sizeof(fname), FILENAME_ROM0); if (ret < 0) goto end; printf("ROM filename: %s\n", fname); - ret = get_filename(device, fname, sizeof(fname), FILENAME_RAM); + ret = read_filename(device, fname, sizeof(fname), FILENAME_RAM); if (ret < 0) goto end; printf("SRAM filename: %s\n", fname); + ret = read_w_counter(device, &counter); + if (ret < 0) + goto end; + printf("flash writes: %u\n", counter); + ret = read_flash_rom_id(device, &rom_id); + if (ret < 0) + goto end; + printf("flash rom id: %08x\n", rom_id); end: release_device(device);