#pypp 0
// Iris: micro-kernel for a capability-based operating system.
// mips/trendtac/board.ccp: trendtac-specific functions.
// Copyright 2009 Bas Wijnen <wijnen@debian.org>
//
// 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 3 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, see <http://www.gnu.org/licenses/>.

void board_init ():
	// Disable all gpio interrupts and alternate functions initially.
	for unsigned i = 0; i < 4; ++i:
		GPIO_GPIER (i) = 0
		GPIO_GPALR (i) = 0
		GPIO_GPAUR (i) = 0
	// Set up the rest of the hardware (copied from Linux).
	cpm_idle_mode ()
	cpm_enable_cko1 ()
	cpm_start_all ()
	harb_set_priority (0x08)
	dmac_enable_all_channels ()
	harb_usb0_uhc ()
	gpio_as_emc ()
	gpio_as_uart0 ()
	gpio_as_dma ()
	gpio_as_eth ()
	gpio_as_usb ()
	gpio_as_lcd_master ()
	gpio_as_ssi()
	gpio_as_msc ()

	gpio_as_gpio (GPIO_CAPS_PORT, GPIO_CAPS)
	gpio_as_gpio (GPIO_SCROLL_PORT, GPIO_SCROLL)
	gpio_as_gpio (GPIO_NUM_PORT, GPIO_NUM)
	gpio_as_gpio (GPIO_TP_LEFT_PORT, GPIO_TP_LEFT)
	gpio_as_gpio (GPIO_TP_RIGHT_PORT, GPIO_TP_RIGHT)

	// Start the operating system timer, and set it to give an interrupt immediately.
	// This is better, because the kernel starts with jumping into the idle task and
	// waiting for the first interrupt.
	unsigned latch = (JZ_EXTAL + (HZ >> 1)) / HZ
	ost_disable_all ()
	ost_set_mode (0, OST_TCSR_UIE | OST_TCSR_CKS_EXTAL)
	ost_set_reload (0, latch)
	ost_set_count (0, 1)
	ost_set_mode (0, OST_TCSR_UIE | OST_TCSR_CKS_EXTAL)
	ost_enable_channel (0)