117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2021 Aidan MacDonald
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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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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "system.h"
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#include "clk-x1000.h"
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#include "spl-x1000.h"
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#include "gpio-x1000.h"
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#define CMDLINE_COMMON \
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"mem=64M@0x0 no_console_suspend console=ttyS2,115200n8 lpj=5009408 ip=off"
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#define CMDLINE_NORMAL \
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" init=/linuxrc ubi.mtd=5 root=ubi0:rootfs ubi.mtd=6 rootfstype=ubifs rw"
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static int dualboot_setup(void)
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{
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spl_dualboot_init_clocktree();
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spl_dualboot_init_uart2();
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/* load PDMA MCU firmware */
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jz_writef(CPM_CLKGR, PDMA(0));
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return spl_storage_read(0x4000, 0x2000, (void*)0xb3422000);
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}
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const struct spl_boot_option spl_boot_options[] = {
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[BOOT_OPTION_ROCKBOX] = {
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.storage_addr = 0x6800,
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.storage_size = 102 * 1024,
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.load_addr = X1000_DRAM_BASE,
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.exec_addr = X1000_DRAM_BASE,
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.flags = BOOTFLAG_UCLPACK,
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},
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[BOOT_OPTION_OFW_PLAYER] = {
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.storage_addr = 0x140000,
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.storage_size = 8 * 1024 * 1024,
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.load_addr = 0x80efffc0,
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.exec_addr = 0x80f00000,
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.cmdline = CMDLINE_COMMON CMDLINE_NORMAL,
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.cmdline_addr = 0x80004000,
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.setup = dualboot_setup,
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},
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[BOOT_OPTION_OFW_RECOVERY] = {
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.storage_addr = 0x940000,
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.storage_size = 10 * 1024 * 1024,
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.load_addr = 0x80efffc0,
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.exec_addr = 0x80f00000,
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.cmdline = CMDLINE_COMMON,
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.cmdline_addr = 0x80004000,
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.setup = dualboot_setup,
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},
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};
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int spl_get_boot_option(void)
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{
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/* Button debounce time in OST clock cycles */
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const uint32_t btn_stable_time = 100 * (X1000_EXCLK_FREQ / 4000);
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/* Buttons to poll */
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const unsigned port = GPIO_B;
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const uint32_t recov_pin = (1 << 22); /* Next */
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const uint32_t orig_fw_pin = (1 << 21); /* Prev */
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uint32_t pin = -1, lastpin = 0;
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uint32_t deadline = 0;
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int iter_count = 30; /* to avoid an infinite loop */
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/* set GPIOs to input state */
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gpioz_configure(port, recov_pin|orig_fw_pin, GPIOF_INPUT);
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/* Poll until we get a stable reading */
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do {
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lastpin = pin;
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pin = ~REG_GPIO_PIN(port) & (recov_pin|orig_fw_pin);
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if(pin != lastpin) {
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deadline = __ost_read32() + btn_stable_time;
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iter_count -= 1;
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}
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} while(iter_count > 0 && __ost_read32() < deadline);
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if(iter_count >= 0 && (pin & orig_fw_pin)) {
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if(pin & recov_pin)
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return BOOT_OPTION_OFW_RECOVERY;
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else
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return BOOT_OPTION_OFW_PLAYER;
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}
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return BOOT_OPTION_ROCKBOX;
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}
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void spl_error(void)
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{
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/* Flash the backlight */
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int level = 0;
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while(1) {
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gpio_set_function(GPIO_PC(25), GPIOF_OUTPUT(level));
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mdelay(100);
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level = 1 - level;
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}
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}
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