2 * mini2440 development board support
4 * Copyright Michel Pollet <buserror@gmail.com>
6 * This code is licensed under the GNU GPL v2.
14 #include "qemu-timer.h"
16 #include "audio/audio.h"
23 #include "eeprom24c0x.h"
25 #define mini2440_printf(format, ...) \
26 fprintf(stderr, "QEMU %s: " format, __FUNCTION__, ##__VA_ARGS__)
28 #define MINI2440_GPIO_BACKLIGHT S3C_GPG(4)
29 #define MINI2440_GPIO_LCD_RESET S3C_GPC(6)
30 #define MINI2440_GPIO_nSD_DETECT S3C_GPG(8)
31 #define MINI2440_GPIO_WP_SD S3C_GPH(8)
32 #define MINI2440_GPIO_DM9000 S3C_GPF(7)
33 #define MINI2440_GPIO_USB_PULLUP S3C_GPC(5)
35 #define MINI2440_IRQ_nSD_DETECT S3C_EINT(16)
36 #define MINI2440_IRQ_DM9000 S3C_EINT(7)
42 struct mini2440_board_s
{
43 struct s3c_state_s
*cpu
;
45 struct ee24c08_s
* eeprom
;
54 * the 24c08 sits on 4 addresses on the bus, and uses the lower address bits
55 * to address the 256 byte "page" of the eeprom. We thus need to use 4 i2c_slaves
56 * and keep track of which one was used to set the read/write pointer into the data
59 typedef struct ee24cxx_page_s
{
61 struct ee24c08_s
* eeprom
;
64 typedef struct ee24c08_s
{
65 /* that memory takes 4 addresses */
72 static void ee24c08_event(i2c_slave
*i2c
, enum i2c_event event
)
74 ee24cxx_page_s
*s
= FROM_I2C_SLAVE(ee24cxx_page_s
, i2c
);
79 s
->eeprom
->ptr
= s
->page
* 256;
83 static int ee24c08_tx(i2c_slave
*i2c
, uint8_t data
)
85 ee24cxx_page_s
*s
= FROM_I2C_SLAVE(ee24cxx_page_s
, i2c
);
89 if (s
->eeprom
->count
++ == 0) {
90 /* first byte is address offset */
91 s
->eeprom
->ptr
= (s
->page
* 256) + data
;
93 mini2440_printf("write %04x=%02x\n", s
->eeprom
->ptr
, data
);
94 s
->eeprom
->data
[s
->eeprom
->ptr
] = data
;
95 s
->eeprom
->ptr
= (s
->eeprom
->ptr
& ~0xff) | ((s
->eeprom
->ptr
+ 1) & 0xff);
101 static int ee24c08_rx(i2c_slave
*i2c
)
103 ee24cxx_page_s
*s
= FROM_I2C_SLAVE(ee24cxx_page_s
, i2c
);
108 res
= s
->eeprom
->data
[s
->eeprom
->ptr
];
110 s
->eeprom
->ptr
= (s
->eeprom
->ptr
& ~0xff) | ((s
->eeprom
->ptr
+ 1) & 0xff);
115 static void ee24c08_save(QEMUFile
*f
, void *opaque
)
117 struct ee24c08_s
*s
= (struct ee24c08_s
*) opaque
;
120 qemu_put_be16s(f
, &s
->ptr
);
121 qemu_put_be16s(f
, &s
->count
);
122 qemu_put_buffer(f
, s
->data
, sizeof(s
->data
));
124 for (i
= 0; i
< 4; i
++)
125 i2c_slave_save(f
, s
->slave
[i
]);
128 static int ee24c08_load(QEMUFile
*f
, void *opaque
, int version_id
)
130 struct ee24c08_s
*s
= (struct ee24c08_s
*) opaque
;
133 qemu_get_be16s(f
, &s
->ptr
);
134 qemu_get_be16s(f
, &s
->count
);
135 qemu_get_buffer(f
, s
->data
, sizeof(s
->data
));
137 for (i
= 0; i
< 4; i
++)
138 i2c_slave_load(f
, s
->slave
[i
]);
142 static void ee24c08_page_init(i2c_slave
*i2c
)
144 /* nothing to do here */
147 static I2CSlaveInfo ee24c08_info
= {
148 .init
= ee24c08_page_init
,
149 .event
= ee24c08_event
,
154 static void ee24c08_register_devices(void)
156 i2c_register_slave("24C08", sizeof(ee24cxx_page_s
), &ee24c08_info
);
159 device_init(ee24c08_register_devices
);
161 static ee24c08
* ee24c08_init(i2c_bus
* bus
)
163 ee24c08
*s
= qemu_malloc(sizeof(ee24c08
));
166 printf("QEMU: %s\n", __FUNCTION__
);
168 memset(s
->data
, 0xff, sizeof(s
->data
));
170 for (i
= 0; i
< 4; i
++) {
171 DeviceState
*dev
= i2c_create_slave(bus
, "24C08", 0x50 + i
);
173 mini2440_printf("failed address %02x\n", 0x50+i
);
175 s
->slave
[i
] = I2C_SLAVE_FROM_QDEV(dev
);
176 ee24cxx_page_s
*ss
= FROM_I2C_SLAVE(ee24cxx_page_s
, s
->slave
[i
]);
180 register_savevm("ee24c08", -1, 0, ee24c08_save
, ee24c08_load
, s
);
184 /* Handlers for output ports */
185 static void mini2440_bl_switch(void *opaque
, int line
, int level
)
187 printf("QEMU: %s: LCD Backlight now %s (%d).\n", __FUNCTION__
, level
? "on" : "off", level
);
190 static void mini2440_bl_intensity(int line
, int level
, void *opaque
)
192 struct mini2440_board_s
*s
= (struct mini2440_board_s
*) opaque
;
194 if ((level
>> 8) != s
->bl_level
) {
195 s
->bl_level
= level
>> 8;
196 printf("%s: LCD Backlight now at %04x\n", __FUNCTION__
, level
);
200 static void mini2440_gpio_setup(struct mini2440_board_s
*s
)
202 /* set the "input" pin values */
203 s3c_gpio_set_dat(s
->cpu
->io
, S3C_GPG(13), 1);
204 s3c_gpio_set_dat(s
->cpu
->io
, S3C_GPG(14), 1);
205 s3c_gpio_set_dat(s
->cpu
->io
, S3C_GPG(15), 0);
207 s3c_gpio_out_set(s
->cpu
->io
, MINI2440_GPIO_BACKLIGHT
,
208 *qemu_allocate_irqs(mini2440_bl_switch
, s
, 1));
210 s3c_timers_cmp_handler_set(s
->cpu
->timers
, 1, mini2440_bl_intensity
, s
);
212 /* Register the SD card pins to the lower SD driver */
214 s3c_gpio_in_get(s
->cpu
->io
)[MINI2440_GPIO_WP_SD
],
215 qemu_irq_invert(s3c_gpio_in_get(s
->cpu
->io
)[MINI2440_IRQ_nSD_DETECT
]));
220 static void hexdump(const void* address
, uint32_t len
)
222 const unsigned char* p
= address
;
225 for (i
= 0; i
< len
; i
+= 16) {
226 for (j
= 0; j
< 16 && i
+ j
< len
; j
++)
227 fprintf(stderr
, "%02x ", p
[i
+ j
]);
229 fprintf(stderr
, " ");
230 fprintf(stderr
, " ");
231 for (j
= 0; j
< 16 && i
+ j
< len
; j
++)
232 fprintf(stderr
, "%c", (p
[i
+ j
] < ' ' || p
[i
+ j
] > 0x7f) ? '.' : p
[i
+ j
]);
233 fprintf(stderr
, "\n");
238 static int mini2440_load_from_nand(NANDFlashState
*nand
,
239 uint32_t nand_offset
, uint32_t s3c_base_offset
, uint32_t size
)
249 for (page
= 0; page
< (size
/ 512); page
++, src
+= 512 + 16, dst
+= 512) {
250 if (nand_readraw(nand
, nand_offset
+ src
, buffer
, 512)) {
251 cpu_physical_memory_write(s3c_base_offset
+ dst
, buffer
, 512);
253 mini2440_printf("failed to load nand %d:%d\n",
254 nand_offset
+ src
, 512 + 16);
261 static void mini2440_reset(void *opaque
)
263 struct mini2440_board_s
*s
= (struct mini2440_board_s
*) opaque
;
266 s
->cpu
->env
->regs
[15] = 0;
268 if (s
->boot_mode
== BOOT_NAND
) {
270 * Normally we would load 4 KB of nand to SRAM and jump there, but
271 * it is not working perfectly as expected, so we cheat and load
272 * it from nand directly relocated to 0x33f80000 and jump there
274 if (mini2440_load_from_nand(s
->nand
, 0, S3C_RAM_BASE
| 0x03f80000, 256*1024)> 0) {
275 mini2440_printf("loaded default u-boot from NAND\n");
276 s
->cpu
->env
->regs
[15] = S3C_RAM_BASE
| 0x03f80000; /* start address, u-boot already relocated */
278 #if 0 && defined(LATER)
279 if (mini2440_load_from_nand(s
->nand
, 0, S3C_SRAM_BASE_NANDBOOT
, S3C_SRAM_SIZE
) > 0) {
280 s
->cpu
->env
->regs
[15] = S3C_SRAM_BASE_NANDBOOT
; /* start address, u-boot relocating code */
281 mini2440_printf("4KB SteppingStone loaded from NAND\n");
286 * if a u--boot is available as a file, we always use it
289 image_size
= load_image("mini2440/u-boot.bin", qemu_get_ram_ptr(0x03f80000));
291 image_size
= load_image("u-boot.bin", qemu_get_ram_ptr(0x03f80000));
292 if (image_size
> 0) {
293 if (image_size
& (512 -1)) /* round size to a NAND block size */
294 image_size
= (image_size
+ 512) & ~(512-1);
295 mini2440_printf("loaded override u-boot (size %x)\n", image_size
);
296 s
->cpu
->env
->regs
[15] = S3C_RAM_BASE
| 0x03f80000; /* start address, u-boot already relocated */
301 * if a kernel was explicitly specified, we load it too
304 image_size
= load_image(s
->kernel
, qemu_get_ram_ptr(0x02000000));
305 if (image_size
> 0) {
306 if (image_size
& (512 -1)) /* round size to a NAND block size */
307 image_size
= (image_size
+ 512) & ~(512-1);
308 mini2440_printf("loaded %s (size %x)\n", s
->kernel
, image_size
);
314 /* Typical touchscreen calibration values */
315 static const int mini2440_ts_scale
[6] = {
316 0, (90 - 960) * 256 / 1021, -90 * 256 * 32,
317 (940 - 75) * 256 / 1021, 0, 75 * 256 * 32,
321 static struct mini2440_board_s
*mini2440_init_common(struct mini2440_board_s
*s
,
323 const char *kernel_filename
, const char *cpu_model
,
329 s
->kernel
= kernel_filename
;
332 /* Setup CPU & memory */
333 if (ram_size
< s
->ram
+ S3C_SRAM_SIZE
) {
334 mini2440_printf("This platform requires %i bytes of memory (not %d)\n",
335 s
->ram
+ S3C_SRAM_SIZE
, ram_size
);
338 if (cpu_model
&& strcmp(cpu_model
, "arm920t")) {
339 mini2440_printf("This platform requires an ARM920T core\n");
343 if (s
->boot_mode
== BOOT_NOR
)
344 sram_base
= S3C_SRAM_BASE_NORBOOT
;
346 sram_base
= S3C_SRAM_BASE_NANDBOOT
;
348 s
->cpu
= s3c24xx_init(S3C_CPU_2440
, 12000000 /* 12 mhz */, s
->ram
, sram_base
, s
->mmc
);
350 /* Setup peripherals */
351 mini2440_gpio_setup(s
);
353 s
->eeprom
= ee24c08_init(s3c_i2c_bus(s
->cpu
->i2c
));
359 nd
->model
= "dm9000";
360 if (strcmp(nd
->model
, "dm9000") == 0) {
361 dm9000_init(nd
, 0x20000000, 0x300, 0x304, s3c_gpio_in_get(s
->cpu
->io
)[MINI2440_IRQ_DM9000
]);
365 s3c_adc_setscale(s
->cpu
->adc
, mini2440_ts_scale
);
367 /* Setup initial (reset) machine state */
368 qemu_register_reset(mini2440_reset
, s
);
373 #define FLASH_NOR_SIZE (2*1024*1024)
375 static void mini2440_init(ram_addr_t ram_size
,
376 const char *boot_device
,
377 const char *kernel_filename
,
378 const char *kernel_cmdline
,
379 const char *initrd_filename
,
380 const char *cpu_model
)
382 struct mini2440_board_s
*mini
= (struct mini2440_board_s
*)
383 qemu_mallocz(sizeof(struct mini2440_board_s
));
384 int sd_idx
= drive_get_index(IF_SD
, 0, 0);
385 int nor_idx
= drive_get_index(IF_PFLASH
, 0, 0);
386 int nand_idx
= drive_get_index(IF_MTD
, 0, 0);
388 ram_addr_t phys_flash
;
390 /* Check the boot mode */
392 mini
->boot_mode
= BOOT_NAND
;
394 mini
->boot_mode
= BOOT_NOR
;
396 printf("Boot mode: %s\n", mini
->boot_mode
== BOOT_NOR
? "NOR": "NAND");
399 if (mini
->boot_mode
== BOOT_NOR
) {
401 int nor_size
= bdrv_getlength(drives_table
[nor_idx
].bdrv
);
402 if (nor_size
> FLASH_NOR_SIZE
)
403 printf("file too big (2MBytes)\n");
404 printf("Register parallel flash %d size 0x%x '%s'\n",
406 bdrv_get_device_name(drives_table
[nor_idx
].bdrv
));
410 phys_flash
= qemu_ram_alloc(FLASH_NOR_SIZE
);
411 pflash_cfi02_register(0, phys_flash
,
412 nor_idx
!= -1 ? drives_table
[nor_idx
].bdrv
: NULL
, (64 * 1024),
413 FLASH_NOR_SIZE
>> 16,
414 1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
420 sd
= sd_init(drives_table
[sd_idx
].bdrv
, 0);
422 mini
= mini2440_init_common(mini
, ram_size
,
423 kernel_filename
, cpu_model
, sd
);
425 mini
->nand
= nand_init(NAND_MFR_SAMSUNG
, 0x76);
426 mini
->cpu
->nand
->reg(mini
->cpu
->nand
, mini
->nand
);
428 mini2440_reset(mini
);
431 QEMUMachine mini2440_machine
= {
433 "MINI2440 Chinese Samsung SoC dev board (S3C2440A)",
434 .init
= mini2440_init
,