158 lines
4.3 KiB
C
158 lines
4.3 KiB
C
/*
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*
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* 2.6 port, Embedded Alley Solutions, Inc
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*
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* Based on Per Hallsmark, per.hallsmark@mvista.com
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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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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/ioport.h>
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#include <linux/irq.h>
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#include <linux/mm.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/serial_pnx8xxx.h>
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#include <linux/pm.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 <glb.h>
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#include <int.h>
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#include <pci.h>
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#include <uart.h>
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#include <nand.h>
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extern void __init board_setup(void);
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extern void pnx8550_machine_restart(char *);
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extern void pnx8550_machine_halt(void);
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extern void pnx8550_machine_power_off(void);
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extern struct resource ioport_resource;
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extern struct resource iomem_resource;
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extern void rs_kgdb_hook(int tty_no);
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extern char *prom_getcmdline(void);
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struct resource standard_io_resources[] = {
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{
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.start = 0x00,
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.end = 0x1f,
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.name = "dma1",
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.flags = IORESOURCE_BUSY
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}, {
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.start = 0x40,
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.end = 0x5f,
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.name = "timer",
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.flags = IORESOURCE_BUSY
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}, {
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.start = 0x80,
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.end = 0x8f,
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.name = "dma page reg",
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.flags = IORESOURCE_BUSY
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}, {
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.start = 0xc0,
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.end = 0xdf,
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.name = "dma2",
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.flags = IORESOURCE_BUSY
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},
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};
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#define STANDARD_IO_RESOURCES ARRAY_SIZE(standard_io_resources)
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extern struct resource pci_io_resource;
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extern struct resource pci_mem_resource;
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/* Return the total size of DRAM-memory, (RANK0 + RANK1) */
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unsigned long get_system_mem_size(void)
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{
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/* Read IP2031_RANK0_ADDR_LO */
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unsigned long dram_r0_lo = inl(PCI_BASE | 0x65010);
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/* Read IP2031_RANK1_ADDR_HI */
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unsigned long dram_r1_hi = inl(PCI_BASE | 0x65018);
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return dram_r1_hi - dram_r0_lo + 1;
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}
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int pnx8550_console_port = -1;
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void __init plat_mem_setup(void)
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{
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int i;
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char* argptr;
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board_setup(); /* board specific setup */
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_machine_restart = pnx8550_machine_restart;
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_machine_halt = pnx8550_machine_halt;
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pm_power_off = pnx8550_machine_power_off;
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/* Clear the Global 2 Register, PCI Inta Output Enable Registers
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Bit 1:Enable DAC Powerdown
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-> 0:DACs are enabled and are working normally
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1:DACs are powerdown
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Bit 0:Enable of PCI inta output
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-> 0 = Disable PCI inta output
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1 = Enable PCI inta output
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*/
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PNX8550_GLB2_ENAB_INTA_O = 0;
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/* IO/MEM resources. */
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set_io_port_base(KSEG1);
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ioport_resource.start = 0;
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ioport_resource.end = ~0;
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iomem_resource.start = 0;
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iomem_resource.end = ~0;
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/* Request I/O space for devices on this board */
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for (i = 0; i < STANDARD_IO_RESOURCES; i++)
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request_resource(&ioport_resource, standard_io_resources + i);
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/* Place the Mode Control bit for GPIO pin 16 in primary function */
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/* Pin 16 is used by UART1, UA1_TX */
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outl((PNX8550_GPIO_MODE_PRIMOP << PNX8550_GPIO_MC_16_BIT) |
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(PNX8550_GPIO_MODE_PRIMOP << PNX8550_GPIO_MC_17_BIT),
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PNX8550_GPIO_MC1);
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argptr = prom_getcmdline();
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if ((argptr = strstr(argptr, "console=ttyS")) != NULL) {
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argptr += strlen("console=ttyS");
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pnx8550_console_port = *argptr == '0' ? 0 : 1;
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/* We must initialize the UART (console) before early printk */
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/* Set LCR to 8-bit and BAUD to 38400 (no 5) */
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ip3106_lcr(UART_BASE, pnx8550_console_port) =
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PNX8XXX_UART_LCR_8BIT;
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ip3106_baud(UART_BASE, pnx8550_console_port) = 5;
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}
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#ifdef CONFIG_KGDB
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argptr = prom_getcmdline();
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if ((argptr = strstr(argptr, "kgdb=ttyS")) != NULL) {
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int line;
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argptr += strlen("kgdb=ttyS");
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line = *argptr == '0' ? 0 : 1;
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rs_kgdb_hook(line);
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pr_info("KGDB: Using ttyS%i for session, "
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"please connect your debugger\n", line ? 1 : 0);
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}
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#endif
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return;
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}
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