src/target/firmware/board/fcdev3b/init.c

   1 /* Initialization for the FreeCalypso FCDEV3B modem */
   2
   3 /* Based on board/gta0x/init.c with the following obnoxious legalese:
   4  *
   5  * (C) 2010 by Harald Welte <laforge@gnumonks.org>
   6  *
   7  * All Rights Reserved
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  */
  20
  21 #include <stdint.h>
  22 #include <stdio.h>
  23
  24 #include <debug.h>
  25 #include <ctors.h>
  26 #include <memory.h>
  27 #include <board.h>
  28 #include <keypad.h>
  29 #include <console.h>
  30 #include <flash/cfi_flash.h>
  31 #include <tiffs.h>
  32
  33 #include <calypso/irq.h>
  34 #include <calypso/clock.h>
  35 #include <calypso/dma.h>
  36 #include <calypso/rtc.h>
  37 #include <calypso/timer.h>
  38 #include <uart.h>
  39
  40 #include <comm/sercomm.h>
  41 #include <comm/timer.h>
  42
  43 #include <abb/twl3025.h>
  44 #include <rf/trf6151.h>
  45
  46 #define ARMIO_LATCH_OUT 0xfffe4802
  47 #define IO_CNTL_REG     0xfffe4804
  48 #define ARM_CONF_REG    0xfffef006
  49 #define ASIC_CONF_REG   0xfffef008
  50 #define IO_CONF_REG     0xfffef00a
  51
  52 static void board_io_init(void)
  53 {
  54         uint16_t reg;
  55
  56         reg = readw(ASIC_CONF_REG);
  57         /* TWL3025: Set SPI+RIF RX clock to rising edge */
  58         reg |= (1 << 13) | (1 << 14);
  59         writew(reg, ASIC_CONF_REG);
  60
  61         /*
  62          * Most Calypso peripheral interface signals are unconnected
  63          * on this modem.  We configure them to be GPIOs in IO_CONF_REG,
  64          * then configure them to be outputs in IO_CNTL_REG, then set
  65          * the outputs to 0 in ARMIO_LATCH_OUT.
  66          *
  67          * Differences from Openmoko GTA0x:
  68          *
  69          * GPIO1 output needs to be 1 to enable the loudspeaker amplifier
  70          * GPIO3 needs to be configured as an input
  71          * I/O 9-12 are MCSI rather than GPIOs
  72          */
  73         writew(0x0215, IO_CONF_REG);
  74         writew(0xDC08, IO_CNTL_REG);
  75         writew(0x0002, ARMIO_LATCH_OUT);
  76
  77         /* configure ADD(22), needed for second half of flash */
  78         reg = readw(ARM_CONF_REG);
  79         reg |= (1 << 3);
  80         writew(reg, ARM_CONF_REG);
  81 }
  82
  83 void board_init(int with_irq)
  84 {
  85         /* Configure the memory interface */
  86         /* Using the same settings as the official FreeCalypso fw */
  87         calypso_mem_cfg(CALYPSO_nCS0, 4, CALYPSO_MEM_16bit, 1);
  88         calypso_mem_cfg(CALYPSO_nCS1, 4, CALYPSO_MEM_16bit, 1);
  89         calypso_mem_cfg(CALYPSO_nCS2, 4, CALYPSO_MEM_16bit, 1);
  90         calypso_mem_cfg(CALYPSO_nCS3, 4, CALYPSO_MEM_16bit, 1);
  91         calypso_mem_cfg(CALYPSO_CS4, 4, CALYPSO_MEM_16bit, 1);
  92         calypso_mem_cfg(CALYPSO_nCS6, 0, CALYPSO_MEM_32bit, 1);
  93         calypso_mem_cfg(CALYPSO_nCS7, 0, CALYPSO_MEM_32bit, 0);
  94
  95         /* Set VTCXO_DIV2 = 1, configure PLL for 104 MHz and give ARM half of that */
  96         calypso_clock_set(2, CALYPSO_PLL13_104_MHZ, ARM_MCLK_DIV_2);
  97
  98         /* Configure the RHEA bridge with some sane default values */
  99         calypso_rhea_cfg(0, 0, 0xff, 0, 1, 0, 0);
 100
 101         /* Initialize board-specific GPIO */
 102         board_io_init();
 103
 104         /* Enable bootrom mapping to route exception vectors to RAM */
 105         calypso_bootrom(with_irq);
 106         calypso_exceptions_install();
 107
 108         /* Initialize interrupt controller */
 109         if (with_irq)
 110                 irq_init();
 111
 112         sercomm_bind_uart(UART_MODEM);
 113         cons_bind_uart(UART_IRDA);
 114
 115         /* initialize MODEM UART to be used for sercomm */
 116         uart_init(UART_MODEM, with_irq);
 117         uart_baudrate(UART_MODEM, UART_115200);
 118
 119         /* Initialize IRDA UART to be used for old-school console code.
 120          * note: IRDA uart only accessible on C115 and C117 PCB */
 121         uart_init(UART_IRDA, with_irq);
 122         uart_baudrate(UART_IRDA, UART_115200);
 123
 124         /* Initialize hardware timers */
 125         hwtimer_init();
 126
 127         /* Initialize DMA controller */
 128         dma_init();
 129
 130         /* Initialize real time clock */
 131         rtc_init();
 132
 133         /* Initialize system timers (uses hwtimer 2) */
 134         timer_init();
 135
 136         /* Initialize ABB driver (uses SPI) */
 137         twl3025_init();
 138
 139         /* Initialize TIFFS reader (8 sectors of 256 KiB each) */
 140         tiffs_init(0x01800000, 0x40000, 8);
 141 }