src/target/firmware/board/gta0x/init.c

   1 /* Initialization for the Openmoko Freerunner modem */
   2
   3 /* (C) 2010 by Harald Welte <laforge@gnumonks.org>
   4  *
   5  * All Rights Reserved
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  */
  18
  19 #include <stdint.h>
  20 #include <stdio.h>
  21
  22 #include <debug.h>
  23 #include <ctors.h>
  24 #include <memory.h>
  25 #include <board.h>
  26 #include <keypad.h>
  27 #include <console.h>
  28 #include <flash/cfi_flash.h>
  29 #include <tiffs.h>
  30
  31 #include <calypso/irq.h>
  32 #include <calypso/clock.h>
  33 #include <calypso/dma.h>
  34 #include <calypso/rtc.h>
  35 #include <calypso/timer.h>
  36 #include <uart.h>
  37 #include <calypso/backlight.h>
  38
  39 #include <comm/sercomm.h>
  40 #include <comm/timer.h>
  41
  42 #include <abb/twl3025.h>
  43 #include <rf/trf6151.h>
  44 #include "../compal/keymap.h"
  45
  46 #define ARMIO_LATCH_OUT 0xfffe4802
  47 #define IO_CNTL_REG     0xfffe4804
  48 #define ASIC_CONF_REG   0xfffef008
  49 #define IO_CONF_REG     0xfffef00a
  50
  51 static void board_io_init(void)
  52 {
  53         uint16_t reg;
  54
  55         reg = readw(ASIC_CONF_REG);
  56         /* TWL3025: Set SPI+RIF RX clock to rising edge */
  57         reg |= (1 << 13) | (1 << 14);
  58         writew(reg, ASIC_CONF_REG);
  59
  60         /*
  61          * Most Calypso peripheral interface signals are unconnected
  62          * on this modem.  We configure them to be GPIOs in IO_CONF_REG,
  63          * then configure them to be outputs in IO_CNTL_REG, then set
  64          * the outputs to 0 in ARMIO_LATCH_OUT.
  65          */
  66         writew(0x03F5, IO_CONF_REG);
  67         writew(0xC000, IO_CNTL_REG);
  68         writew(0x0000, ARMIO_LATCH_OUT);
  69 }
  70
  71 void board_init(int with_irq)
  72 {
  73         /* Configure the memory interface */
  74         calypso_mem_cfg(CALYPSO_nCS0, 3, CALYPSO_MEM_16bit, 1);
  75         calypso_mem_cfg(CALYPSO_nCS1, 3, CALYPSO_MEM_16bit, 1);
  76         calypso_mem_cfg(CALYPSO_nCS2, 5, CALYPSO_MEM_16bit, 1);
  77         calypso_mem_cfg(CALYPSO_nCS3, 5, CALYPSO_MEM_16bit, 1);
  78         calypso_mem_cfg(CALYPSO_CS4, 0, CALYPSO_MEM_8bit, 1);
  79         calypso_mem_cfg(CALYPSO_nCS6, 0, CALYPSO_MEM_32bit, 1);
  80         calypso_mem_cfg(CALYPSO_nCS7, 0, CALYPSO_MEM_32bit, 0);
  81
  82         /* Set VTCXO_DIV2 = 1, configure PLL for 104 MHz and give ARM half of that */
  83         calypso_clock_set(2, CALYPSO_PLL13_104_MHZ, ARM_MCLK_DIV_2);
  84
  85         /* Configure the RHEA bridge with some sane default values */
  86         calypso_rhea_cfg(0, 0, 0xff, 0, 1, 0, 0);
  87
  88         /* Initialize board-specific GPIO */
  89         board_io_init();
  90
  91         /* Enable bootrom mapping to route exception vectors to RAM */
  92         calypso_bootrom(with_irq);
  93         calypso_exceptions_install();
  94
  95         /* Initialize interrupt controller */
  96         if (with_irq)
  97                 irq_init();
  98
  99         sercomm_bind_uart(UART_MODEM);
 100         cons_bind_uart(UART_IRDA);
 101
 102         /* initialize MODEM UART to be used for sercomm */
 103         uart_init(UART_MODEM, with_irq);
 104         uart_baudrate(UART_MODEM, UART_115200);
 105
 106         /* Initialize IRDA UART to be used for old-school console code.
 107          * note: IRDA uart only accessible on C115 and C117 PCB */
 108         uart_init(UART_IRDA, with_irq);
 109         uart_baudrate(UART_IRDA, UART_115200);
 110
 111         /* Initialize hardware timers */
 112         hwtimer_init();
 113
 114         /* Initialize DMA controller */
 115         dma_init();
 116
 117         /* Initialize real time clock */
 118         rtc_init();
 119
 120         /* Initialize system timers (uses hwtimer 2) */
 121         timer_init();
 122
 123         /* Initialize LCD driver (uses I2C) and backlight */
 124         bl_mode_pwl(1);
 125         bl_level(50);
 126
 127         /* Initialize keypad driver */
 128         keypad_init(keymap, with_irq);
 129
 130         /* Initialize ABB driver (uses SPI) */
 131         twl3025_init();
 132
 133         /* Initialize TIFFS reader (7 sectors of 64 KiB each) */
 134         tiffs_init(0x380000, 0x10000, 7);
 135 }