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openwrt-xburst/target/linux/xburst/files-2.6.27/arch/mips/jz4750d/setup.c

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/*
* linux/arch/mips/jz4750d/common/setup.c
*
* JZ4750D common setup routines.
*
* Copyright (C) 2006 Ingenic Semiconductor Inc.
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* This program is distributed in the hope 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.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
*/
#include <linux/init.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/ioport.h>
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <asm/cpu.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/mipsregs.h>
#include <asm/reboot.h>
#include <asm/pgtable.h>
#include <asm/time.h>
#include <asm/jzsoc.h>
#ifdef CONFIG_PM
#include <asm/suspend.h>
#endif
#ifdef CONFIG_PC_KEYB
#include <asm/keyboard.h>
#endif
jz_clocks_t jz_clocks;
extern char * __init prom_getcmdline(void);
extern void __init jz_board_setup(void);
extern void jz_restart(char *);
extern void jz_halt(void);
extern void jz_power_off(void);
extern void jz_time_init(void);
extern void jz_pm_hibernate(void);
static void __init sysclocks_setup(void)
{
#ifndef CONFIG_MIPS_JZ_EMURUS /* FPGA */
jz_clocks.cclk = __cpm_get_cclk();
jz_clocks.hclk = __cpm_get_hclk();
jz_clocks.pclk = __cpm_get_pclk();
jz_clocks.mclk = __cpm_get_mclk();
jz_clocks.h1clk = __cpm_get_h1clk();
jz_clocks.pixclk = __cpm_get_pixclk();
jz_clocks.i2sclk = __cpm_get_i2sclk();
jz_clocks.usbclk = __cpm_get_usbclk();
jz_clocks.mscclk = __cpm_get_mscclk(0);
jz_clocks.extalclk = __cpm_get_extalclk();
jz_clocks.rtcclk = __cpm_get_rtcclk();
#else
#define FPGACLK 8000000
jz_clocks.cclk = FPGACLK;
jz_clocks.hclk = FPGACLK;
jz_clocks.pclk = FPGACLK;
jz_clocks.mclk = FPGACLK;
jz_clocks.h1clk = FPGACLK;
jz_clocks.pixclk = FPGACLK;
jz_clocks.i2sclk = FPGACLK;
jz_clocks.usbclk = FPGACLK;
jz_clocks.mscclk = FPGACLK;
jz_clocks.extalclk = FPGACLK;
jz_clocks.rtcclk = FPGACLK;
#endif
printk("CPU clock: %dMHz, System clock: %dMHz, Peripheral clock: %dMHz, Memory clock: %dMHz\n",
(jz_clocks.cclk + 500000) / 1000000,
(jz_clocks.hclk + 500000) / 1000000,
(jz_clocks.pclk + 500000) / 1000000,
(jz_clocks.mclk + 500000) / 1000000);
}
static void __init soc_cpm_setup(void)
{
/* Start all module clocks
*/
__cpm_start_all();
/* Enable CKO to external memory */
__cpm_enable_cko();
/* CPU enters IDLE mode when executing 'wait' instruction */
__cpm_idle_mode();
/* Setup system clocks */
sysclocks_setup();
}
static void __init soc_harb_setup(void)
{
// __harb_set_priority(0x00); /* CIM>LCD>DMA>ETH>PCI>USB>CBB */
// __harb_set_priority(0x03); /* LCD>CIM>DMA>ETH>PCI>USB>CBB */
// __harb_set_priority(0x0a); /* ETH>LCD>CIM>DMA>PCI>USB>CBB */
}
static void __init soc_emc_setup(void)
{
}
static void __init soc_dmac_setup(void)
{
__dmac_enable_module(0);
__dmac_enable_module(1);
}
static void __init jz_soc_setup(void)
{
soc_cpm_setup();
soc_harb_setup();
soc_emc_setup();
soc_dmac_setup();
}
static void __init jz_serial_setup(void)
{
#ifdef CONFIG_SERIAL_8250
struct uart_port s;
REG8(UART0_FCR) |= UARTFCR_UUE; /* enable UART module */
memset(&s, 0, sizeof(s));
s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
s.iotype = SERIAL_IO_MEM;
s.regshift = 2;
s.uartclk = jz_clocks.extalclk ;
s.line = 0;
s.membase = (u8 *)UART0_BASE;
s.irq = IRQ_UART0;
if (early_serial_setup(&s) != 0) {
printk(KERN_ERR "Serial ttyS0 setup failed!\n");
}
s.line = 1;
s.membase = (u8 *)UART1_BASE;
s.irq = IRQ_UART1;
if (early_serial_setup(&s) != 0) {
printk(KERN_ERR "Serial ttyS1 setup failed!\n");
}
s.line = 2;
s.membase = (u8 *)UART2_BASE;
s.irq = IRQ_UART2;
if (early_serial_setup(&s) != 0) {
printk(KERN_ERR "Serial ttyS2 setup failed!\n");
}
/*
s.line = 3;
s.membase = (u8 *)UART3_BASE;
s.irq = IRQ_UART3;
if (early_serial_setup(&s) != 0) {
printk(KERN_ERR "Serial ttyS3 setup failed!\n");
}
*/
#endif
}
void __init plat_mem_setup(void)
{
char *argptr;
argptr = prom_getcmdline();
/* IO/MEM resources. Which will be the addtion value in `inX' and
* `outX' macros defined in asm/io.h */
set_io_port_base(0);
ioport_resource.start = 0x00000000;
ioport_resource.end = 0xffffffff;
iomem_resource.start = 0x00000000;
iomem_resource.end = 0xffffffff;
_machine_restart = jz_restart;
_machine_halt = jz_halt;
pm_power_off = jz_pm_hibernate;
jz_soc_setup();
jz_serial_setup();
jz_board_setup();
#ifdef CONFIG_PM
jz_pm_init();
#endif
}