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Diffstat (limited to 'hw/tc58128.c')
-rw-r--r--hw/tc58128.c178
1 files changed, 0 insertions, 178 deletions
diff --git a/hw/tc58128.c b/hw/tc58128.c
deleted file mode 100644
index a3929d444f..0000000000
--- a/hw/tc58128.c
+++ /dev/null
@@ -1,178 +0,0 @@
-#include "hw/hw.h"
-#include "hw/sh4/sh.h"
-#include "hw/loader.h"
-
-#define CE1 0x0100
-#define CE2 0x0200
-#define RE 0x0400
-#define WE 0x0800
-#define ALE 0x1000
-#define CLE 0x2000
-#define RDY1 0x4000
-#define RDY2 0x8000
-#define RDY(n) ((n) == 0 ? RDY1 : RDY2)
-
-typedef enum { WAIT, READ1, READ2, READ3 } state_t;
-
-typedef struct {
- uint8_t *flash_contents;
- state_t state;
- uint32_t address;
- uint8_t address_cycle;
-} tc58128_dev;
-
-static tc58128_dev tc58128_devs[2];
-
-#define FLASH_SIZE (16*1024*1024)
-
-static void init_dev(tc58128_dev * dev, const char *filename)
-{
- int ret, blocks;
-
- dev->state = WAIT;
- dev->flash_contents = g_malloc(FLASH_SIZE);
- memset(dev->flash_contents, 0xff, FLASH_SIZE);
- if (filename) {
- /* Load flash image skipping the first block */
- ret = load_image(filename, dev->flash_contents + 528 * 32);
- if (ret < 0) {
- fprintf(stderr, "ret=%d\n", ret);
- fprintf(stderr, "qemu: could not load flash image %s\n",
- filename);
- exit(1);
- } else {
- /* Build first block with number of blocks */
- blocks = (ret + 528 * 32 - 1) / (528 * 32);
- dev->flash_contents[0] = blocks & 0xff;
- dev->flash_contents[1] = (blocks >> 8) & 0xff;
- dev->flash_contents[2] = (blocks >> 16) & 0xff;
- dev->flash_contents[3] = (blocks >> 24) & 0xff;
- fprintf(stderr, "loaded %d bytes for %s into flash\n", ret,
- filename);
- }
- }
-}
-
-static void handle_command(tc58128_dev * dev, uint8_t command)
-{
- switch (command) {
- case 0xff:
- fprintf(stderr, "reset flash device\n");
- dev->state = WAIT;
- break;
- case 0x00:
- fprintf(stderr, "read mode 1\n");
- dev->state = READ1;
- dev->address_cycle = 0;
- break;
- case 0x01:
- fprintf(stderr, "read mode 2\n");
- dev->state = READ2;
- dev->address_cycle = 0;
- break;
- case 0x50:
- fprintf(stderr, "read mode 3\n");
- dev->state = READ3;
- dev->address_cycle = 0;
- break;
- default:
- fprintf(stderr, "unknown flash command 0x%02x\n", command);
- abort();
- }
-}
-
-static void handle_address(tc58128_dev * dev, uint8_t data)
-{
- switch (dev->state) {
- case READ1:
- case READ2:
- case READ3:
- switch (dev->address_cycle) {
- case 0:
- dev->address = data;
- if (dev->state == READ2)
- dev->address |= 0x100;
- else if (dev->state == READ3)
- dev->address |= 0x200;
- break;
- case 1:
- dev->address += data * 528 * 0x100;
- break;
- case 2:
- dev->address += data * 528;
- fprintf(stderr, "address pointer in flash: 0x%08x\n",
- dev->address);
- break;
- default:
- /* Invalid data */
- abort();
- }
- dev->address_cycle++;
- break;
- default:
- abort();
- }
-}
-
-static uint8_t handle_read(tc58128_dev * dev)
-{
-#if 0
- if (dev->address % 0x100000 == 0)
- fprintf(stderr, "reading flash at address 0x%08x\n", dev->address);
-#endif
- return dev->flash_contents[dev->address++];
-}
-
-/* We never mark the device as busy, so interrupts cannot be triggered
- XXXXX */
-
-static int tc58128_cb(uint16_t porta, uint16_t portb,
- uint16_t * periph_pdtra, uint16_t * periph_portadir,
- uint16_t * periph_pdtrb, uint16_t * periph_portbdir)
-{
- int dev;
-
- if ((porta & CE1) == 0)
- dev = 0;
- else if ((porta & CE2) == 0)
- dev = 1;
- else
- return 0; /* No device selected */
-
- if ((porta & RE) && (porta & WE)) {
- /* Nothing to do, assert ready and return to input state */
- *periph_portadir &= 0xff00;
- *periph_portadir |= RDY(dev);
- *periph_pdtra |= RDY(dev);
- return 1;
- }
-
- if (porta & CLE) {
- /* Command */
- assert((porta & WE) == 0);
- handle_command(&tc58128_devs[dev], porta & 0x00ff);
- } else if (porta & ALE) {
- assert((porta & WE) == 0);
- handle_address(&tc58128_devs[dev], porta & 0x00ff);
- } else if ((porta & RE) == 0) {
- *periph_portadir |= 0x00ff;
- *periph_pdtra &= 0xff00;
- *periph_pdtra |= handle_read(&tc58128_devs[dev]);
- } else {
- abort();
- }
- return 1;
-}
-
-static sh7750_io_device tc58128 = {
- RE | WE, /* Port A triggers */
- 0, /* Port B triggers */
- tc58128_cb /* Callback */
-};
-
-int tc58128_init(struct SH7750State *s, const char *zone1, const char *zone2)
-{
- init_dev(&tc58128_devs[0], zone1);
- init_dev(&tc58128_devs[1], zone2);
- return sh7750_register_io_device(s, &tc58128);
-}