2 * This file is part of wl1271
4 * Copyright (C) 2008-2009 Nokia Corporation
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 #include <linux/gpio.h>
26 #include "wl1271_acx.h"
27 #include "wl1271_reg.h"
28 #include "wl1271_boot.h"
29 #include "wl1271_spi.h"
30 #include "wl1271_event.h"
32 static struct wl1271_partition_set part_table[PART_TABLE_LEN] = {
39 .start = REGISTERS_BASE,
58 .start = REGISTERS_BASE,
91 static void wl1271_boot_set_ecpu_ctrl(struct wl1271 *wl, u32 flag)
95 /* 10.5.0 run the firmware (I) */
96 cpu_ctrl = wl1271_spi_read32(wl, ACX_REG_ECPU_CONTROL);
98 /* 10.5.1 run the firmware (II) */
100 wl1271_spi_write32(wl, ACX_REG_ECPU_CONTROL, cpu_ctrl);
103 static void wl1271_boot_fw_version(struct wl1271 *wl)
105 struct wl1271_static_data static_data;
107 wl1271_spi_read(wl, wl->cmd_box_addr,
108 &static_data, sizeof(static_data), false);
110 strncpy(wl->chip.fw_ver, static_data.fw_version,
111 sizeof(wl->chip.fw_ver));
113 /* make sure the string is NULL-terminated */
114 wl->chip.fw_ver[sizeof(wl->chip.fw_ver) - 1] = '\0';
117 static int wl1271_boot_upload_firmware_chunk(struct wl1271 *wl, void *buf,
118 size_t fw_data_len, u32 dest)
120 struct wl1271_partition_set partition;
121 int addr, chunk_num, partition_limit;
124 /* whal_FwCtrl_LoadFwImageSm() */
126 wl1271_debug(DEBUG_BOOT, "starting firmware upload");
128 wl1271_debug(DEBUG_BOOT, "fw_data_len %zd chunk_size %d",
129 fw_data_len, CHUNK_SIZE);
131 if ((fw_data_len % 4) != 0) {
132 wl1271_error("firmware length not multiple of four");
136 chunk = kmalloc(CHUNK_SIZE, GFP_KERNEL);
138 wl1271_error("allocation for firmware upload chunk failed");
142 memcpy(&partition, &part_table[PART_DOWN], sizeof(partition));
143 partition.mem.start = dest;
144 wl1271_set_partition(wl, &partition);
146 /* 10.1 set partition limit and chunk num */
148 partition_limit = part_table[PART_DOWN].mem.size;
150 while (chunk_num < fw_data_len / CHUNK_SIZE) {
151 /* 10.2 update partition, if needed */
152 addr = dest + (chunk_num + 2) * CHUNK_SIZE;
153 if (addr > partition_limit) {
154 addr = dest + chunk_num * CHUNK_SIZE;
155 partition_limit = chunk_num * CHUNK_SIZE +
156 part_table[PART_DOWN].mem.size;
157 partition.mem.start = addr;
158 wl1271_set_partition(wl, &partition);
161 /* 10.3 upload the chunk */
162 addr = dest + chunk_num * CHUNK_SIZE;
163 p = buf + chunk_num * CHUNK_SIZE;
164 memcpy(chunk, p, CHUNK_SIZE);
165 wl1271_debug(DEBUG_BOOT, "uploading fw chunk 0x%p to 0x%x",
167 wl1271_spi_write(wl, addr, chunk, CHUNK_SIZE, false);
172 /* 10.4 upload the last chunk */
173 addr = dest + chunk_num * CHUNK_SIZE;
174 p = buf + chunk_num * CHUNK_SIZE;
175 memcpy(chunk, p, fw_data_len % CHUNK_SIZE);
176 wl1271_debug(DEBUG_BOOT, "uploading fw last chunk (%zd B) 0x%p to 0x%x",
177 fw_data_len % CHUNK_SIZE, p, addr);
178 wl1271_spi_write(wl, addr, chunk, fw_data_len % CHUNK_SIZE, false);
184 static int wl1271_boot_upload_firmware(struct wl1271 *wl)
186 u32 chunks, addr, len;
191 chunks = be32_to_cpup((__be32 *) fw);
194 wl1271_debug(DEBUG_BOOT, "firmware chunks to be uploaded: %u", chunks);
197 addr = be32_to_cpup((__be32 *) fw);
199 len = be32_to_cpup((__be32 *) fw);
203 wl1271_info("firmware chunk too long: %u", len);
206 wl1271_debug(DEBUG_BOOT, "chunk %d addr 0x%x len %u",
208 ret = wl1271_boot_upload_firmware_chunk(wl, fw, len, addr);
217 static int wl1271_boot_upload_nvs(struct wl1271 *wl)
219 size_t nvs_len, burst_len;
222 u8 *nvs_ptr, *nvs, *nvs_aligned;
228 if (wl->nvs_len < WL1271_NVS_LEN)
233 /* only the first part of the NVS needs to be uploaded */
234 nvs_len = WL1271_NVS_LEN;
236 /* FIXME: read init settings from the remaining part of the NVS */
238 /* Update the device MAC address into the nvs */
239 nvs[11] = wl->mac_addr[0];
240 nvs[10] = wl->mac_addr[1];
241 nvs[6] = wl->mac_addr[2];
242 nvs[5] = wl->mac_addr[3];
243 nvs[4] = wl->mac_addr[4];
244 nvs[3] = wl->mac_addr[5];
247 * Layout before the actual NVS tables:
248 * 1 byte : burst length.
249 * 2 bytes: destination address.
250 * n bytes: data to burst copy.
252 * This is ended by a 0 length, then the NVS tables.
255 /* FIXME: Do we need to check here whether the LSB is 1? */
257 burst_len = nvs_ptr[0];
258 dest_addr = (nvs_ptr[1] & 0xfe) | ((u32)(nvs_ptr[2] << 8));
260 /* FIXME: Due to our new wl1271_translate_reg_addr function,
261 we need to add the REGISTER_BASE to the destination */
262 dest_addr += REGISTERS_BASE;
264 /* We move our pointer to the data */
267 for (i = 0; i < burst_len; i++) {
268 val = (nvs_ptr[0] | (nvs_ptr[1] << 8)
269 | (nvs_ptr[2] << 16) | (nvs_ptr[3] << 24));
271 wl1271_debug(DEBUG_BOOT,
272 "nvs burst write 0x%x: 0x%x",
274 wl1271_spi_write32(wl, dest_addr, val);
282 * We've reached the first zero length, the first NVS table
283 * is 7 bytes further.
286 nvs_len -= nvs_ptr - nvs;
287 nvs_len = ALIGN(nvs_len, 4);
289 /* FIXME: The driver sets the partition here, but this is not needed,
290 since it sets to the same one as currently in use */
291 /* Now we must set the partition correctly */
292 wl1271_set_partition(wl, &part_table[PART_WORK]);
294 /* Copy the NVS tables to a new block to ensure alignment */
295 nvs_aligned = kmemdup(nvs_ptr, nvs_len, GFP_KERNEL);
299 /* And finally we upload the NVS tables */
300 /* FIXME: In wl1271, we upload everything at once.
301 No endianness handling needed here?! The ref driver doesn't do
302 anything about it at this point */
303 wl1271_spi_write(wl, CMD_MBOX_ADDRESS, nvs_aligned, nvs_len, false);
309 static void wl1271_boot_enable_interrupts(struct wl1271 *wl)
312 wl1271_spi_write32(wl, ACX_REG_INTERRUPT_MASK,
313 WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK));
314 wl1271_spi_write32(wl, HI_CFG, HI_CFG_DEF_VAL);
317 static int wl1271_boot_soft_reset(struct wl1271 *wl)
319 unsigned long timeout;
322 /* perform soft reset */
323 wl1271_spi_write32(wl, ACX_REG_SLV_SOFT_RESET,
324 ACX_SLV_SOFT_RESET_BIT);
326 /* SOFT_RESET is self clearing */
327 timeout = jiffies + usecs_to_jiffies(SOFT_RESET_MAX_TIME);
329 boot_data = wl1271_spi_read32(wl, ACX_REG_SLV_SOFT_RESET);
330 wl1271_debug(DEBUG_BOOT, "soft reset bootdata 0x%x", boot_data);
331 if ((boot_data & ACX_SLV_SOFT_RESET_BIT) == 0)
334 if (time_after(jiffies, timeout)) {
335 /* 1.2 check pWhalBus->uSelfClearTime if the
336 * timeout was reached */
337 wl1271_error("soft reset timeout");
341 udelay(SOFT_RESET_STALL_TIME);
345 wl1271_spi_write32(wl, ENABLE, 0x0);
347 /* disable auto calibration on start*/
348 wl1271_spi_write32(wl, SPARE_A2, 0xffff);
353 static int wl1271_boot_run_firmware(struct wl1271 *wl)
356 u32 chip_id, interrupt;
358 wl1271_boot_set_ecpu_ctrl(wl, ECPU_CONTROL_HALT);
360 chip_id = wl1271_spi_read32(wl, CHIP_ID_B);
362 wl1271_debug(DEBUG_BOOT, "chip id after firmware boot: 0x%x", chip_id);
364 if (chip_id != wl->chip.id) {
365 wl1271_error("chip id doesn't match after firmware boot");
369 /* wait for init to complete */
371 while (loop++ < INIT_LOOP) {
372 udelay(INIT_LOOP_DELAY);
373 interrupt = wl1271_spi_read32(wl,
374 ACX_REG_INTERRUPT_NO_CLEAR);
376 if (interrupt == 0xffffffff) {
377 wl1271_error("error reading hardware complete "
381 /* check that ACX_INTR_INIT_COMPLETE is enabled */
382 else if (interrupt & WL1271_ACX_INTR_INIT_COMPLETE) {
383 wl1271_spi_write32(wl, ACX_REG_INTERRUPT_ACK,
384 WL1271_ACX_INTR_INIT_COMPLETE);
389 if (loop > INIT_LOOP) {
390 wl1271_error("timeout waiting for the hardware to "
391 "complete initialization");
395 /* get hardware config command mail box */
396 wl->cmd_box_addr = wl1271_spi_read32(wl, REG_COMMAND_MAILBOX_PTR);
398 /* get hardware config event mail box */
399 wl->event_box_addr = wl1271_spi_read32(wl, REG_EVENT_MAILBOX_PTR);
401 /* set the working partition to its "running" mode offset */
402 wl1271_set_partition(wl, &part_table[PART_WORK]);
404 wl1271_debug(DEBUG_MAILBOX, "cmd_box_addr 0x%x event_box_addr 0x%x",
405 wl->cmd_box_addr, wl->event_box_addr);
407 wl1271_boot_fw_version(wl);
410 * in case of full asynchronous mode the firmware event must be
411 * ready to receive event from the command mailbox
414 /* unmask required mbox events */
415 wl->event_mask = BSS_LOSE_EVENT_ID |
416 SCAN_COMPLETE_EVENT_ID |
419 ret = wl1271_event_unmask(wl);
421 wl1271_error("EVENT mask setting failed");
425 wl1271_event_mbox_config(wl);
427 /* firmware startup completed */
431 static int wl1271_boot_write_irq_polarity(struct wl1271 *wl)
435 polarity = wl1271_top_reg_read(wl, OCP_REG_POLARITY);
437 /* We use HIGH polarity, so unset the LOW bit */
438 polarity &= ~POLARITY_LOW;
439 wl1271_top_reg_write(wl, OCP_REG_POLARITY, polarity);
444 int wl1271_boot(struct wl1271 *wl)
449 if (REF_CLOCK == 0 || REF_CLOCK == 2 || REF_CLOCK == 4)
450 /* ref clk: 19.2/38.4/38.4-XTAL */
452 else if (REF_CLOCK == 1 || REF_CLOCK == 3)
456 if (REF_CLOCK != 0) {
459 val = wl1271_top_reg_read(wl, OCP_REG_CLK_TYPE);
460 val &= FREF_CLK_TYPE_BITS;
462 wl1271_top_reg_write(wl, OCP_REG_CLK_TYPE, val);
465 /* Set clock polarity */
466 val = wl1271_top_reg_read(wl, OCP_REG_CLK_POLARITY);
467 val &= FREF_CLK_POLARITY_BITS;
468 val |= CLK_REQ_OUTN_SEL;
469 wl1271_top_reg_write(wl, OCP_REG_CLK_POLARITY, val);
472 wl1271_spi_write32(wl, PLL_PARAMETERS, clk);
474 pause = wl1271_spi_read32(wl, PLL_PARAMETERS);
476 wl1271_debug(DEBUG_BOOT, "pause1 0x%x", pause);
478 pause &= ~(WU_COUNTER_PAUSE_VAL); /* FIXME: This should probably be
479 * WU_COUNTER_PAUSE_VAL instead of
480 * 0x3ff (magic number ). How does
482 pause |= WU_COUNTER_PAUSE_VAL;
483 wl1271_spi_write32(wl, WU_COUNTER_PAUSE, pause);
485 /* Continue the ELP wake up sequence */
486 wl1271_spi_write32(wl, WELP_ARM_COMMAND, WELP_ARM_COMMAND_VAL);
489 wl1271_set_partition(wl, &part_table[PART_DRPW]);
491 /* Read-modify-write DRPW_SCRATCH_START register (see next state)
492 to be used by DRPw FW. The RTRIM value will be added by the FW
493 before taking DRPw out of reset */
495 wl1271_debug(DEBUG_BOOT, "DRPW_SCRATCH_START %08x", DRPW_SCRATCH_START);
496 clk = wl1271_spi_read32(wl, DRPW_SCRATCH_START);
498 wl1271_debug(DEBUG_BOOT, "clk2 0x%x", clk);
501 clk |= (REF_CLOCK << 1) << 4;
502 wl1271_spi_write32(wl, DRPW_SCRATCH_START, clk);
504 wl1271_set_partition(wl, &part_table[PART_WORK]);
506 /* Disable interrupts */
507 wl1271_spi_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL);
509 ret = wl1271_boot_soft_reset(wl);
513 /* 2. start processing NVS file */
514 ret = wl1271_boot_upload_nvs(wl);
518 /* write firmware's last address (ie. it's length) to
519 * ACX_EEPROMLESS_IND_REG */
520 wl1271_debug(DEBUG_BOOT, "ACX_EEPROMLESS_IND_REG");
522 wl1271_spi_write32(wl, ACX_EEPROMLESS_IND_REG,
523 ACX_EEPROMLESS_IND_REG);
525 tmp = wl1271_spi_read32(wl, CHIP_ID_B);
527 wl1271_debug(DEBUG_BOOT, "chip id 0x%x", tmp);
529 /* 6. read the EEPROM parameters */
530 tmp = wl1271_spi_read32(wl, SCR_PAD2);
532 ret = wl1271_boot_write_irq_polarity(wl);
536 /* FIXME: Need to check whether this is really what we want */
537 wl1271_spi_write32(wl, ACX_REG_INTERRUPT_MASK,
538 WL1271_ACX_ALL_EVENTS_VECTOR);
540 /* WL1271: The reference driver skips steps 7 to 10 (jumps directly
543 ret = wl1271_boot_upload_firmware(wl);
547 /* 10.5 start firmware */
548 ret = wl1271_boot_run_firmware(wl);
552 /* Enable firmware interrupts now */
553 wl1271_boot_enable_interrupts(wl);
555 /* set the wl1271 default filters */
556 wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
557 wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
559 wl1271_event_mbox_config(wl);