/* Initialization for the FreeCalypso FCDEV3B modem */ /* Based on board/gta0x/init.c with the following obnoxious legalese: * * (C) 2010 by Harald Welte * * All Rights Reserved * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define ARMIO_LATCH_OUT 0xfffe4802 #define IO_CNTL_REG 0xfffe4804 #define ARM_CONF_REG 0xfffef006 #define ASIC_CONF_REG 0xfffef008 #define IO_CONF_REG 0xfffef00a static void board_io_init(void) { uint16_t reg; reg = readw(ASIC_CONF_REG); /* TWL3025: Set SPI+RIF RX clock to rising edge */ reg |= (1 << 13) | (1 << 14); writew(reg, ASIC_CONF_REG); /* * Most Calypso peripheral interface signals are unconnected * on this modem. We configure them to be GPIOs in IO_CONF_REG, * then configure them to be outputs in IO_CNTL_REG, then set * the outputs to 0 in ARMIO_LATCH_OUT. * * Differences from Openmoko GTA0x: * * GPIO1 output needs to be 1 to enable the loudspeaker amplifier * GPIO3 needs to be configured as an input * I/O 9-12 are MCSI rather than GPIOs */ writew(0x0215, IO_CONF_REG); writew(0xDC08, IO_CNTL_REG); writew(0x0002, ARMIO_LATCH_OUT); /* configure ADD(22), needed for second half of flash */ reg = readw(ARM_CONF_REG); reg |= (1 << 3); writew(reg, ARM_CONF_REG); } void board_init(int with_irq) { /* Configure the memory interface */ /* Using the same settings as the official FreeCalypso fw */ calypso_mem_cfg(CALYPSO_nCS0, 4, CALYPSO_MEM_16bit, 1); calypso_mem_cfg(CALYPSO_nCS1, 4, CALYPSO_MEM_16bit, 1); calypso_mem_cfg(CALYPSO_nCS2, 4, CALYPSO_MEM_16bit, 1); calypso_mem_cfg(CALYPSO_nCS3, 4, CALYPSO_MEM_16bit, 1); calypso_mem_cfg(CALYPSO_CS4, 4, CALYPSO_MEM_16bit, 1); calypso_mem_cfg(CALYPSO_nCS6, 0, CALYPSO_MEM_32bit, 1); calypso_mem_cfg(CALYPSO_nCS7, 0, CALYPSO_MEM_32bit, 0); /* Set VTCXO_DIV2 = 1, configure PLL for 104 MHz and give ARM half of that */ calypso_clock_set(2, CALYPSO_PLL13_104_MHZ, ARM_MCLK_DIV_2); /* Configure the RHEA bridge with some sane default values */ calypso_rhea_cfg(0, 0, 0xff, 0, 1, 0, 0); /* Initialize board-specific GPIO */ board_io_init(); /* Enable bootrom mapping to route exception vectors to RAM */ calypso_bootrom(with_irq); calypso_exceptions_install(); /* Initialize interrupt controller */ if (with_irq) irq_init(); sercomm_bind_uart(UART_MODEM); cons_bind_uart(UART_IRDA); /* initialize MODEM UART to be used for sercomm */ uart_init(UART_MODEM, with_irq); uart_baudrate(UART_MODEM, UART_115200); /* Initialize IRDA UART to be used for old-school console code. * note: IRDA uart only accessible on C115 and C117 PCB */ uart_init(UART_IRDA, with_irq); uart_baudrate(UART_IRDA, UART_115200); /* Initialize hardware timers */ hwtimer_init(); /* Initialize DMA controller */ dma_init(); /* Initialize real time clock */ rtc_init(); /* Initialize system timers (uses hwtimer 2) */ timer_init(); /* Initialize ABB driver (uses SPI) */ twl3025_init(); }