mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-13 00:22:48 +02:00
208 lines
4.9 KiB
C
208 lines
4.9 KiB
C
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/*
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* linux/arch/mips/jz4750d/common/setup.c
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*
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* JZ4750D common setup routines.
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*
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* Copyright (C) 2006 Ingenic Semiconductor Inc.
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*
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* This program is free software; you can distribute it and/or modify it
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* under the terms of the GNU General Public License (Version 2) as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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*/
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/ioport.h>
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#include <linux/tty.h>
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#include <linux/serial.h>
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#include <linux/serial_core.h>
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#include <linux/serial_8250.h>
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#include <asm/cpu.h>
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#include <asm/bootinfo.h>
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#include <asm/irq.h>
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#include <asm/mipsregs.h>
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#include <asm/reboot.h>
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#include <asm/pgtable.h>
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#include <asm/time.h>
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#include <asm/jzsoc.h>
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#ifdef CONFIG_PM
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#include <asm/suspend.h>
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#endif
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#ifdef CONFIG_PC_KEYB
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#include <asm/keyboard.h>
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#endif
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jz_clocks_t jz_clocks;
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extern char * __init prom_getcmdline(void);
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extern void __init jz_board_setup(void);
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extern void jz_restart(char *);
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extern void jz_halt(void);
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extern void jz_power_off(void);
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extern void jz_time_init(void);
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extern void jz_pm_hibernate(void);
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static void __init sysclocks_setup(void)
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{
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#ifndef CONFIG_MIPS_JZ_EMURUS /* FPGA */
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jz_clocks.cclk = __cpm_get_cclk();
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jz_clocks.hclk = __cpm_get_hclk();
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jz_clocks.pclk = __cpm_get_pclk();
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jz_clocks.mclk = __cpm_get_mclk();
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jz_clocks.h1clk = __cpm_get_h1clk();
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jz_clocks.pixclk = __cpm_get_pixclk();
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jz_clocks.i2sclk = __cpm_get_i2sclk();
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jz_clocks.usbclk = __cpm_get_usbclk();
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jz_clocks.mscclk = __cpm_get_mscclk(0);
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jz_clocks.extalclk = __cpm_get_extalclk();
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jz_clocks.rtcclk = __cpm_get_rtcclk();
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#else
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#define FPGACLK 8000000
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jz_clocks.cclk = FPGACLK;
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jz_clocks.hclk = FPGACLK;
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jz_clocks.pclk = FPGACLK;
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jz_clocks.mclk = FPGACLK;
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jz_clocks.h1clk = FPGACLK;
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jz_clocks.pixclk = FPGACLK;
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jz_clocks.i2sclk = FPGACLK;
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jz_clocks.usbclk = FPGACLK;
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jz_clocks.mscclk = FPGACLK;
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jz_clocks.extalclk = FPGACLK;
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jz_clocks.rtcclk = FPGACLK;
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#endif
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printk("CPU clock: %dMHz, System clock: %dMHz, Peripheral clock: %dMHz, Memory clock: %dMHz\n",
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(jz_clocks.cclk + 500000) / 1000000,
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(jz_clocks.hclk + 500000) / 1000000,
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(jz_clocks.pclk + 500000) / 1000000,
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(jz_clocks.mclk + 500000) / 1000000);
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}
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static void __init soc_cpm_setup(void)
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{
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/* Start all module clocks
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*/
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__cpm_start_all();
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/* Enable CKO to external memory */
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__cpm_enable_cko();
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/* CPU enters IDLE mode when executing 'wait' instruction */
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__cpm_idle_mode();
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/* Setup system clocks */
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sysclocks_setup();
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}
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static void __init soc_harb_setup(void)
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{
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// __harb_set_priority(0x00); /* CIM>LCD>DMA>ETH>PCI>USB>CBB */
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// __harb_set_priority(0x03); /* LCD>CIM>DMA>ETH>PCI>USB>CBB */
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// __harb_set_priority(0x0a); /* ETH>LCD>CIM>DMA>PCI>USB>CBB */
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}
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static void __init soc_emc_setup(void)
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{
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}
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static void __init soc_dmac_setup(void)
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{
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__dmac_enable_module(0);
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__dmac_enable_module(1);
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}
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static void __init jz_soc_setup(void)
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{
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soc_cpm_setup();
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soc_harb_setup();
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soc_emc_setup();
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soc_dmac_setup();
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}
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static void __init jz_serial_setup(void)
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{
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#ifdef CONFIG_SERIAL_8250
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struct uart_port s;
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REG8(UART0_FCR) |= UARTFCR_UUE; /* enable UART module */
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memset(&s, 0, sizeof(s));
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s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
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s.iotype = SERIAL_IO_MEM;
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s.regshift = 2;
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s.uartclk = jz_clocks.extalclk ;
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s.line = 0;
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s.membase = (u8 *)UART0_BASE;
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s.irq = IRQ_UART0;
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if (early_serial_setup(&s) != 0) {
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printk(KERN_ERR "Serial ttyS0 setup failed!\n");
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}
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s.line = 1;
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s.membase = (u8 *)UART1_BASE;
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s.irq = IRQ_UART1;
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if (early_serial_setup(&s) != 0) {
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printk(KERN_ERR "Serial ttyS1 setup failed!\n");
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}
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s.line = 2;
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s.membase = (u8 *)UART2_BASE;
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s.irq = IRQ_UART2;
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if (early_serial_setup(&s) != 0) {
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printk(KERN_ERR "Serial ttyS2 setup failed!\n");
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}
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/*
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s.line = 3;
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s.membase = (u8 *)UART3_BASE;
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s.irq = IRQ_UART3;
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if (early_serial_setup(&s) != 0) {
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printk(KERN_ERR "Serial ttyS3 setup failed!\n");
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}
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*/
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#endif
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}
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void __init plat_mem_setup(void)
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{
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char *argptr;
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argptr = prom_getcmdline();
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/* IO/MEM resources. Which will be the addtion value in `inX' and
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* `outX' macros defined in asm/io.h */
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set_io_port_base(0);
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ioport_resource.start = 0x00000000;
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ioport_resource.end = 0xffffffff;
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iomem_resource.start = 0x00000000;
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iomem_resource.end = 0xffffffff;
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_machine_restart = jz_restart;
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_machine_halt = jz_halt;
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pm_power_off = jz_pm_hibernate;
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jz_soc_setup();
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jz_serial_setup();
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jz_board_setup();
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#ifdef CONFIG_PM
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jz_pm_init();
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#endif
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}
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