558 lines
14 KiB
C
558 lines
14 KiB
C
/*
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* This file is part of wl1251
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*
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* Copyright (C) 2008 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <linux/gpio.h>
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#include <linux/slab.h>
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#include "reg.h"
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#include "boot.h"
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#include "io.h"
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#include "spi.h"
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#include "event.h"
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#include "acx.h"
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void wl1251_boot_target_enable_interrupts(struct wl1251 *wl)
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{
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wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
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wl1251_reg_write32(wl, HI_CFG, HI_CFG_DEF_VAL);
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}
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int wl1251_boot_soft_reset(struct wl1251 *wl)
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{
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unsigned long timeout;
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u32 boot_data;
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/* perform soft reset */
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wl1251_reg_write32(wl, ACX_REG_SLV_SOFT_RESET, ACX_SLV_SOFT_RESET_BIT);
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/* SOFT_RESET is self clearing */
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timeout = jiffies + usecs_to_jiffies(SOFT_RESET_MAX_TIME);
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while (1) {
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boot_data = wl1251_reg_read32(wl, ACX_REG_SLV_SOFT_RESET);
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wl1251_debug(DEBUG_BOOT, "soft reset bootdata 0x%x", boot_data);
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if ((boot_data & ACX_SLV_SOFT_RESET_BIT) == 0)
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break;
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if (time_after(jiffies, timeout)) {
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/* 1.2 check pWhalBus->uSelfClearTime if the
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* timeout was reached */
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wl1251_error("soft reset timeout");
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return -1;
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}
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udelay(SOFT_RESET_STALL_TIME);
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}
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/* disable Rx/Tx */
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wl1251_reg_write32(wl, ENABLE, 0x0);
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/* disable auto calibration on start*/
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wl1251_reg_write32(wl, SPARE_A2, 0xffff);
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return 0;
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}
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int wl1251_boot_init_seq(struct wl1251 *wl)
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{
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u32 scr_pad6, init_data, tmp, elp_cmd, ref_freq;
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/*
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* col #1: INTEGER_DIVIDER
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* col #2: FRACTIONAL_DIVIDER
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* col #3: ATTN_BB
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* col #4: ALPHA_BB
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* col #5: STOP_TIME_BB
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* col #6: BB_PLL_LOOP_FILTER
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*/
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static const u32 LUT[REF_FREQ_NUM][LUT_PARAM_NUM] = {
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{ 83, 87381, 0xB, 5, 0xF00, 3}, /* REF_FREQ_19_2*/
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{ 61, 141154, 0xB, 5, 0x1450, 2}, /* REF_FREQ_26_0*/
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{ 41, 174763, 0xC, 6, 0x2D00, 1}, /* REF_FREQ_38_4*/
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{ 40, 0, 0xC, 6, 0x2EE0, 1}, /* REF_FREQ_40_0*/
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{ 47, 162280, 0xC, 6, 0x2760, 1} /* REF_FREQ_33_6 */
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};
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/* read NVS params */
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scr_pad6 = wl1251_reg_read32(wl, SCR_PAD6);
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wl1251_debug(DEBUG_BOOT, "scr_pad6 0x%x", scr_pad6);
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/* read ELP_CMD */
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elp_cmd = wl1251_reg_read32(wl, ELP_CMD);
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wl1251_debug(DEBUG_BOOT, "elp_cmd 0x%x", elp_cmd);
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/* set the BB calibration time to be 300 usec (PLL_CAL_TIME) */
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ref_freq = scr_pad6 & 0x000000FF;
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wl1251_debug(DEBUG_BOOT, "ref_freq 0x%x", ref_freq);
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wl1251_reg_write32(wl, PLL_CAL_TIME, 0x9);
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/*
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* PG 1.2: set the clock buffer time to be 210 usec (CLK_BUF_TIME)
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*/
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wl1251_reg_write32(wl, CLK_BUF_TIME, 0x6);
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/*
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* set the clock detect feature to work in the restart wu procedure
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* (ELP_CFG_MODE[14]) and Select the clock source type
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* (ELP_CFG_MODE[13:12])
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*/
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tmp = ((scr_pad6 & 0x0000FF00) << 4) | 0x00004000;
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wl1251_reg_write32(wl, ELP_CFG_MODE, tmp);
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/* PG 1.2: enable the BB PLL fix. Enable the PLL_LIMP_CLK_EN_CMD */
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elp_cmd |= 0x00000040;
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wl1251_reg_write32(wl, ELP_CMD, elp_cmd);
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/* PG 1.2: Set the BB PLL stable time to be 1000usec
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* (PLL_STABLE_TIME) */
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wl1251_reg_write32(wl, CFG_PLL_SYNC_CNT, 0x20);
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/* PG 1.2: read clock request time */
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init_data = wl1251_reg_read32(wl, CLK_REQ_TIME);
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/*
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* PG 1.2: set the clock request time to be ref_clk_settling_time -
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* 1ms = 4ms
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*/
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if (init_data > 0x21)
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tmp = init_data - 0x21;
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else
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tmp = 0;
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wl1251_reg_write32(wl, CLK_REQ_TIME, tmp);
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/* set BB PLL configurations in RF AFE */
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wl1251_reg_write32(wl, 0x003058cc, 0x4B5);
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/* set RF_AFE_REG_5 */
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wl1251_reg_write32(wl, 0x003058d4, 0x50);
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/* set RF_AFE_CTRL_REG_2 */
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wl1251_reg_write32(wl, 0x00305948, 0x11c001);
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/*
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* change RF PLL and BB PLL divider for VCO clock and adjust VCO
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* bais current(RF_AFE_REG_13)
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*/
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wl1251_reg_write32(wl, 0x003058f4, 0x1e);
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/* set BB PLL configurations */
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tmp = LUT[ref_freq][LUT_PARAM_INTEGER_DIVIDER] | 0x00017000;
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wl1251_reg_write32(wl, 0x00305840, tmp);
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/* set fractional divider according to Appendix C-BB PLL
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* Calculations
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*/
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tmp = LUT[ref_freq][LUT_PARAM_FRACTIONAL_DIVIDER];
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wl1251_reg_write32(wl, 0x00305844, tmp);
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/* set the initial data for the sigma delta */
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wl1251_reg_write32(wl, 0x00305848, 0x3039);
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/*
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* set the accumulator attenuation value, calibration loop1
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* (alpha), calibration loop2 (beta), calibration loop3 (gamma) and
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* the VCO gain
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*/
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tmp = (LUT[ref_freq][LUT_PARAM_ATTN_BB] << 16) |
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(LUT[ref_freq][LUT_PARAM_ALPHA_BB] << 12) | 0x1;
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wl1251_reg_write32(wl, 0x00305854, tmp);
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/*
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* set the calibration stop time after holdoff time expires and set
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* settling time HOLD_OFF_TIME_BB
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*/
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tmp = LUT[ref_freq][LUT_PARAM_STOP_TIME_BB] | 0x000A0000;
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wl1251_reg_write32(wl, 0x00305858, tmp);
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/*
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* set BB PLL Loop filter capacitor3- BB_C3[2:0] and set BB PLL
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* constant leakage current to linearize PFD to 0uA -
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* BB_ILOOPF[7:3]
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*/
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tmp = LUT[ref_freq][LUT_PARAM_BB_PLL_LOOP_FILTER] | 0x00000030;
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wl1251_reg_write32(wl, 0x003058f8, tmp);
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/*
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* set regulator output voltage for n divider to
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* 1.35-BB_REFDIV[1:0], set charge pump current- BB_CPGAIN[4:2],
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* set BB PLL Loop filter capacitor2- BB_C2[7:5], set gain of BB
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* PLL auto-call to normal mode- BB_CALGAIN_3DB[8]
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*/
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wl1251_reg_write32(wl, 0x003058f0, 0x29);
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/* enable restart wakeup sequence (ELP_CMD[0]) */
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wl1251_reg_write32(wl, ELP_CMD, elp_cmd | 0x1);
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/* restart sequence completed */
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udelay(2000);
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return 0;
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}
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static void wl1251_boot_set_ecpu_ctrl(struct wl1251 *wl, u32 flag)
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{
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u32 cpu_ctrl;
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/* 10.5.0 run the firmware (I) */
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cpu_ctrl = wl1251_reg_read32(wl, ACX_REG_ECPU_CONTROL);
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/* 10.5.1 run the firmware (II) */
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cpu_ctrl &= ~flag;
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wl1251_reg_write32(wl, ACX_REG_ECPU_CONTROL, cpu_ctrl);
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}
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int wl1251_boot_run_firmware(struct wl1251 *wl)
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{
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int loop, ret;
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u32 chip_id, acx_intr;
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wl1251_boot_set_ecpu_ctrl(wl, ECPU_CONTROL_HALT);
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chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
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wl1251_debug(DEBUG_BOOT, "chip id after firmware boot: 0x%x", chip_id);
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if (chip_id != wl->chip_id) {
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wl1251_error("chip id doesn't match after firmware boot");
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return -EIO;
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}
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/* wait for init to complete */
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loop = 0;
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while (loop++ < INIT_LOOP) {
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udelay(INIT_LOOP_DELAY);
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acx_intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
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if (acx_intr == 0xffffffff) {
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wl1251_error("error reading hardware complete "
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"init indication");
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return -EIO;
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}
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/* check that ACX_INTR_INIT_COMPLETE is enabled */
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else if (acx_intr & WL1251_ACX_INTR_INIT_COMPLETE) {
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wl1251_reg_write32(wl, ACX_REG_INTERRUPT_ACK,
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WL1251_ACX_INTR_INIT_COMPLETE);
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break;
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}
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}
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if (loop > INIT_LOOP) {
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wl1251_error("timeout waiting for the hardware to "
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"complete initialization");
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return -EIO;
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}
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/* get hardware config command mail box */
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wl->cmd_box_addr = wl1251_reg_read32(wl, REG_COMMAND_MAILBOX_PTR);
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/* get hardware config event mail box */
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wl->event_box_addr = wl1251_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
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/* set the working partition to its "running" mode offset */
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wl1251_set_partition(wl, WL1251_PART_WORK_MEM_START,
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WL1251_PART_WORK_MEM_SIZE,
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WL1251_PART_WORK_REG_START,
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WL1251_PART_WORK_REG_SIZE);
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wl1251_debug(DEBUG_MAILBOX, "cmd_box_addr 0x%x event_box_addr 0x%x",
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wl->cmd_box_addr, wl->event_box_addr);
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wl1251_acx_fw_version(wl, wl->fw_ver, sizeof(wl->fw_ver));
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/*
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* in case of full asynchronous mode the firmware event must be
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* ready to receive event from the command mailbox
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*/
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/* enable gpio interrupts */
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wl1251_enable_interrupts(wl);
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/* Enable target's interrupts */
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wl->intr_mask = WL1251_ACX_INTR_RX0_DATA |
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WL1251_ACX_INTR_RX1_DATA |
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WL1251_ACX_INTR_TX_RESULT |
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WL1251_ACX_INTR_EVENT_A |
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WL1251_ACX_INTR_EVENT_B |
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WL1251_ACX_INTR_INIT_COMPLETE;
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wl1251_boot_target_enable_interrupts(wl);
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wl->event_mask = SCAN_COMPLETE_EVENT_ID | BSS_LOSE_EVENT_ID |
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SYNCHRONIZATION_TIMEOUT_EVENT_ID |
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ROAMING_TRIGGER_LOW_RSSI_EVENT_ID |
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ROAMING_TRIGGER_REGAINED_RSSI_EVENT_ID |
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REGAINED_BSS_EVENT_ID | BT_PTA_SENSE_EVENT_ID |
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BT_PTA_PREDICTION_EVENT_ID | JOIN_EVENT_COMPLETE_ID;
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ret = wl1251_event_unmask(wl);
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if (ret < 0) {
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wl1251_error("EVENT mask setting failed");
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return ret;
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}
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wl1251_event_mbox_config(wl);
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/* firmware startup completed */
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return 0;
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}
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static int wl1251_boot_upload_firmware(struct wl1251 *wl)
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{
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int addr, chunk_num, partition_limit;
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size_t fw_data_len, len;
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u8 *p, *buf;
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/* whal_FwCtrl_LoadFwImageSm() */
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wl1251_debug(DEBUG_BOOT, "chip id before fw upload: 0x%x",
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wl1251_reg_read32(wl, CHIP_ID_B));
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/* 10.0 check firmware length and set partition */
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fw_data_len = (wl->fw[4] << 24) | (wl->fw[5] << 16) |
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(wl->fw[6] << 8) | (wl->fw[7]);
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wl1251_debug(DEBUG_BOOT, "fw_data_len %zu chunk_size %d", fw_data_len,
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CHUNK_SIZE);
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if ((fw_data_len % 4) != 0) {
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wl1251_error("firmware length not multiple of four");
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return -EIO;
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}
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buf = kmalloc(CHUNK_SIZE, GFP_KERNEL);
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if (!buf) {
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wl1251_error("allocation for firmware upload chunk failed");
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return -ENOMEM;
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}
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wl1251_set_partition(wl, WL1251_PART_DOWN_MEM_START,
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WL1251_PART_DOWN_MEM_SIZE,
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WL1251_PART_DOWN_REG_START,
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WL1251_PART_DOWN_REG_SIZE);
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/* 10.1 set partition limit and chunk num */
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chunk_num = 0;
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partition_limit = WL1251_PART_DOWN_MEM_SIZE;
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while (chunk_num < fw_data_len / CHUNK_SIZE) {
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/* 10.2 update partition, if needed */
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addr = WL1251_PART_DOWN_MEM_START +
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(chunk_num + 2) * CHUNK_SIZE;
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if (addr > partition_limit) {
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addr = WL1251_PART_DOWN_MEM_START +
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chunk_num * CHUNK_SIZE;
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partition_limit = chunk_num * CHUNK_SIZE +
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WL1251_PART_DOWN_MEM_SIZE;
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wl1251_set_partition(wl,
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addr,
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WL1251_PART_DOWN_MEM_SIZE,
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WL1251_PART_DOWN_REG_START,
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WL1251_PART_DOWN_REG_SIZE);
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}
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/* 10.3 upload the chunk */
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addr = WL1251_PART_DOWN_MEM_START + chunk_num * CHUNK_SIZE;
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p = wl->fw + FW_HDR_SIZE + chunk_num * CHUNK_SIZE;
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wl1251_debug(DEBUG_BOOT, "uploading fw chunk 0x%p to 0x%x",
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p, addr);
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/* need to copy the chunk for dma */
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len = CHUNK_SIZE;
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memcpy(buf, p, len);
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wl1251_mem_write(wl, addr, buf, len);
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chunk_num++;
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}
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/* 10.4 upload the last chunk */
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addr = WL1251_PART_DOWN_MEM_START + chunk_num * CHUNK_SIZE;
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p = wl->fw + FW_HDR_SIZE + chunk_num * CHUNK_SIZE;
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/* need to copy the chunk for dma */
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len = fw_data_len % CHUNK_SIZE;
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memcpy(buf, p, len);
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wl1251_debug(DEBUG_BOOT, "uploading fw last chunk (%zu B) 0x%p to 0x%x",
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len, p, addr);
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wl1251_mem_write(wl, addr, buf, len);
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kfree(buf);
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return 0;
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}
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static int wl1251_boot_upload_nvs(struct wl1251 *wl)
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{
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size_t nvs_len, nvs_bytes_written, burst_len;
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int nvs_start, i;
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u32 dest_addr, val;
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u8 *nvs_ptr, *nvs;
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nvs = wl->nvs;
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if (nvs == NULL)
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return -ENODEV;
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nvs_ptr = nvs;
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nvs_len = wl->nvs_len;
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nvs_start = wl->fw_len;
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/*
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* Layout before the actual NVS tables:
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* 1 byte : burst length.
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* 2 bytes: destination address.
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* n bytes: data to burst copy.
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*
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* This is ended by a 0 length, then the NVS tables.
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*/
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while (nvs_ptr[0]) {
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burst_len = nvs_ptr[0];
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dest_addr = (nvs_ptr[1] & 0xfe) | ((u32)(nvs_ptr[2] << 8));
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/* We move our pointer to the data */
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nvs_ptr += 3;
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for (i = 0; i < burst_len; i++) {
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val = (nvs_ptr[0] | (nvs_ptr[1] << 8)
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| (nvs_ptr[2] << 16) | (nvs_ptr[3] << 24));
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wl1251_debug(DEBUG_BOOT,
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"nvs burst write 0x%x: 0x%x",
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dest_addr, val);
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wl1251_mem_write32(wl, dest_addr, val);
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nvs_ptr += 4;
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dest_addr += 4;
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}
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}
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/*
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* We've reached the first zero length, the first NVS table
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* is 7 bytes further.
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*/
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nvs_ptr += 7;
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nvs_len -= nvs_ptr - nvs;
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nvs_len = ALIGN(nvs_len, 4);
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/* Now we must set the partition correctly */
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wl1251_set_partition(wl, nvs_start,
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WL1251_PART_DOWN_MEM_SIZE,
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WL1251_PART_DOWN_REG_START,
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WL1251_PART_DOWN_REG_SIZE);
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/* And finally we upload the NVS tables */
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nvs_bytes_written = 0;
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while (nvs_bytes_written < nvs_len) {
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val = (nvs_ptr[0] | (nvs_ptr[1] << 8)
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| (nvs_ptr[2] << 16) | (nvs_ptr[3] << 24));
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val = cpu_to_le32(val);
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wl1251_debug(DEBUG_BOOT,
|
|
"nvs write table 0x%x: 0x%x",
|
|
nvs_start, val);
|
|
wl1251_mem_write32(wl, nvs_start, val);
|
|
|
|
nvs_ptr += 4;
|
|
nvs_bytes_written += 4;
|
|
nvs_start += 4;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wl1251_boot(struct wl1251 *wl)
|
|
{
|
|
int ret = 0, minor_minor_e2_ver;
|
|
u32 tmp, boot_data;
|
|
|
|
/* halt embedded ARM CPU while loading firmware */
|
|
wl1251_reg_write32(wl, ACX_REG_ECPU_CONTROL, ECPU_CONTROL_HALT);
|
|
|
|
ret = wl1251_boot_soft_reset(wl);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
/* 2. start processing NVS file */
|
|
if (wl->use_eeprom) {
|
|
wl1251_reg_write32(wl, ACX_REG_EE_START, START_EEPROM_MGR);
|
|
/* Wait for EEPROM NVS burst read to complete */
|
|
msleep(40);
|
|
wl1251_reg_write32(wl, ACX_EEPROMLESS_IND_REG, USE_EEPROM);
|
|
} else {
|
|
ret = wl1251_boot_upload_nvs(wl);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
/* write firmware's last address (ie. it's length) to
|
|
* ACX_EEPROMLESS_IND_REG */
|
|
wl1251_reg_write32(wl, ACX_EEPROMLESS_IND_REG, wl->fw_len);
|
|
}
|
|
|
|
/* 6. read the EEPROM parameters */
|
|
tmp = wl1251_reg_read32(wl, SCR_PAD2);
|
|
|
|
/* 7. read bootdata */
|
|
wl->boot_attr.radio_type = (tmp & 0x0000FF00) >> 8;
|
|
wl->boot_attr.major = (tmp & 0x00FF0000) >> 16;
|
|
tmp = wl1251_reg_read32(wl, SCR_PAD3);
|
|
|
|
/* 8. check bootdata and call restart sequence */
|
|
wl->boot_attr.minor = (tmp & 0x00FF0000) >> 16;
|
|
minor_minor_e2_ver = (tmp & 0xFF000000) >> 24;
|
|
|
|
wl1251_debug(DEBUG_BOOT, "radioType 0x%x majorE2Ver 0x%x "
|
|
"minorE2Ver 0x%x minor_minor_e2_ver 0x%x",
|
|
wl->boot_attr.radio_type, wl->boot_attr.major,
|
|
wl->boot_attr.minor, minor_minor_e2_ver);
|
|
|
|
ret = wl1251_boot_init_seq(wl);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
/* 9. NVS processing done */
|
|
boot_data = wl1251_reg_read32(wl, ACX_REG_ECPU_CONTROL);
|
|
|
|
wl1251_debug(DEBUG_BOOT, "halt boot_data 0x%x", boot_data);
|
|
|
|
/* 10. check that ECPU_CONTROL_HALT bits are set in
|
|
* pWhalBus->uBootData and start uploading firmware
|
|
*/
|
|
if ((boot_data & ECPU_CONTROL_HALT) == 0) {
|
|
wl1251_error("boot failed, ECPU_CONTROL_HALT not set");
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
ret = wl1251_boot_upload_firmware(wl);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
/* 10.5 start firmware */
|
|
ret = wl1251_boot_run_firmware(wl);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
out:
|
|
return ret;
|
|
}
|