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/* Initialization for the Huawei GTM900-B modem */
/* (C) 2010 by Harald Welte <laforge@gnumonks.org>
* (C) 2010-19 by Steve Markgraf <steve@steve-m.de>
*
* 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 <stdint.h>
#include <stdio.h>
#include <debug.h>
#include <ctors.h>
#include <memory.h>
#include <board.h>
#include <keypad.h>
#include <console.h>
#include <flash/cfi_flash.h>
#include <tiffs.h>
#include <calypso/irq.h>
#include <calypso/clock.h>
#include <calypso/dma.h>
#include <calypso/rtc.h>
#include <calypso/timer.h>
#include <uart.h>
#include <calypso/backlight.h>
#include <comm/sercomm.h>
#include <comm/timer.h>
#include <abb/twl3025.h>
#include <rf/trf6151.h>
#include "keymap.h"
#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
#define LPG_LCR_REG 0xfffe7800
#define LPG_PM_REG 0xfffe7801
int gtm900_hw_is_mg01gsmt;
static void board_io_init(void)
{
uint16_t reg;
reg = readw(ASIC_CONF_REG);
/* Set LPG pin mux for power LED */
reg |= (1 << 6);
/* TWL3025: Set SPI+RIF RX clock to rising edge */
reg |= (1 << 13) | (1 << 14);
writew(reg, ASIC_CONF_REG);
/*
* Configure Calypso GPIO and multifunction pins the same way
* how Huawei's official firmware configures them.
*/
writew(0x03F5, IO_CONF_REG);
writew(0xDC58, IO_CNTL_REG);
writew(0x0007, ARMIO_LATCH_OUT);
/* Set LPG output permanently on (power LED) */
writew(1, LPG_PM_REG);
writew((1 << 7), LPG_LCR_REG);
/* configure ADD(22), needed for second half of flash on MG01GSMT */
reg = readw(ARM_CONF_REG);
reg |= (1 << 3);
writew(reg, ARM_CONF_REG);
}
/*
* There exist two firmware-incompatible versions of GTM900-B hardware:
* MG01GSMT and MGCxGSMT. They have different flash chip types (8 MiB
* vs. 4 MiB) with correspondingly different TIFFS configurations
* (and we need TIFFS in order to read factory RF calibration values),
* and they have different (incompatible) RFFE control signals.
*
* We are going to check the flash chip type and use it to decide which
* hw variant we are running on.
*/
static void board_flash_init(void)
{
uint16_t manufacturer_id, device_id[3];
/* Use an address above the Calypso boot ROM
* so we don't need to unmap it to access the flash. */
flash_get_id((void *)0x40000, &manufacturer_id, device_id);
switch (manufacturer_id) {
case CFI_MANUF_SPANSION:
/* is it S71PL064J? */
if (device_id[0] == 0x227E && device_id[1] == 0x2202 &&
device_id[2] == 0x2201) {
gtm900_hw_is_mg01gsmt = 1;
break;
}
/* is it S71PL032J? */
if (device_id[0] == 0x227E && device_id[1] == 0x220A &&
device_id[2] == 0x2201) {
gtm900_hw_is_mg01gsmt = 0;
break;
}
goto bad;
case CFI_MANUF_SAMSUNG:
/* is it K5A3281CTM? */
if (device_id[0] == 0x22A0) {
gtm900_hw_is_mg01gsmt = 0;
break;
}
/* is it K5L3316CAM? */
if (device_id[0] == 0x257E && device_id[1] == 0x2503 &&
device_id[2] == 0x2501) {
gtm900_hw_is_mg01gsmt = 0;
break;
}
/* FALL THRU */
default:
bad:
printf("Unknown module detected, "
"flash ID 0x%04x 0x%04x 0x%04x 0x%04x\n"
"Please contact mailing list!\n\n", manufacturer_id,
device_id[0], device_id[1], device_id[2]);
return;
}
/* Initialize TIFFS reader */
if (gtm900_hw_is_mg01gsmt)
tiffs_init(0x700000, 0x10000, 15);
else
tiffs_init(0x380000, 0x10000, 7);
}
void board_init(int with_irq)
{
/*
* Configure the memory interface.
* Huawei's official fw sets WS=4 for RAM, but not for flash -
* but let's be consistent and use WS=4 for both. Please refer
* to this technical article for the underlying theory:
https://www.freecalypso.org/hg/freecalypso-docs/file/tip/MEMIF-wait-states
*/
calypso_mem_cfg(CALYPSO_nCS0, 4, CALYPSO_MEM_16bit, 1);
calypso_mem_cfg(CALYPSO_nCS1, 4, CALYPSO_MEM_16bit, 1);
/*
* The remaining 3 chip selects are unused on this hw,
* thus their settings are dummies.
*/
calypso_mem_cfg(CALYPSO_nCS2, 5, CALYPSO_MEM_16bit, 1);
calypso_mem_cfg(CALYPSO_nCS3, 5, CALYPSO_MEM_16bit, 1);
calypso_mem_cfg(CALYPSO_CS4, 0, CALYPSO_MEM_8bit, 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_IRDA);
cons_bind_uart(UART_MODEM);
/* initialize IRDA UART to be used for sercomm */
uart_init(UART_IRDA, with_irq);
uart_baudrate(UART_IRDA, UART_115200);
/* Initialize MODEM UART to be used for old-school console code. */
uart_init(UART_MODEM, with_irq);
uart_baudrate(UART_MODEM, 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 keypad driver */
keypad_init(keymap, with_irq);
/* Initialize ABB driver (uses SPI) */
twl3025_init();
/* Initialize board flash */
board_flash_init();
}
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