1/* 2 * 3 * 2.6 port, Embedded Alley Solutions, Inc 4 * 5 * Based on Per Hallsmark, per.hallsmark@mvista.com 6 * 7 * This program is free software; you can distribute it and/or modify it 8 * under the terms of the GNU General Public License (Version 2) as 9 * published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * for more details. 15 * 16 * You should have received a copy of the GNU General Public License along 17 * with this program; if not, write to the Free Software Foundation, Inc., 18 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. 19 */ 20#include <linux/init.h> 21#include <linux/sched.h> 22#include <linux/ioport.h> 23#include <linux/irq.h> 24#include <linux/mm.h> 25#include <linux/delay.h> 26#include <linux/interrupt.h> 27#include <linux/serial_pnx8xxx.h> 28#include <linux/pm.h> 29 30#include <asm/cpu.h> 31#include <asm/bootinfo.h> 32#include <asm/irq.h> 33#include <asm/mipsregs.h> 34#include <asm/reboot.h> 35#include <asm/pgtable.h> 36#include <asm/time.h> 37 38#include <glb.h> 39#include <int.h> 40#include <pci.h> 41#include <uart.h> 42#include <nand.h> 43 44extern void __init board_setup(void); 45extern void pnx8550_machine_restart(char *); 46extern void pnx8550_machine_halt(void); 47extern void pnx8550_machine_power_off(void); 48extern struct resource ioport_resource; 49extern struct resource iomem_resource; 50extern void pnx8550_time_init(void); 51extern void rs_kgdb_hook(int tty_no); 52extern char *prom_getcmdline(void); 53 54struct resource standard_io_resources[] = { 55 { 56 .start = 0x00, 57 .end = 0x1f, 58 .name = "dma1", 59 .flags = IORESOURCE_BUSY 60 }, { 61 .start = 0x40, 62 .end = 0x5f, 63 .name = "timer", 64 .flags = IORESOURCE_BUSY 65 }, { 66 .start = 0x80, 67 .end = 0x8f, 68 .name = "dma page reg", 69 .flags = IORESOURCE_BUSY 70 }, { 71 .start = 0xc0, 72 .end = 0xdf, 73 .name = "dma2", 74 .flags = IORESOURCE_BUSY 75 }, 76}; 77 78#define STANDARD_IO_RESOURCES (sizeof(standard_io_resources)/sizeof(struct resource)) 79 80extern struct resource pci_io_resource; 81extern struct resource pci_mem_resource; 82 83/* Return the total size of DRAM-memory, (RANK0 + RANK1) */ 84unsigned long get_system_mem_size(void) 85{ 86 /* Read IP2031_RANK0_ADDR_LO */ 87 unsigned long dram_r0_lo = inl(PCI_BASE | 0x65010); 88 /* Read IP2031_RANK1_ADDR_HI */ 89 unsigned long dram_r1_hi = inl(PCI_BASE | 0x65018); 90 91 return dram_r1_hi - dram_r0_lo + 1; 92} 93 94int pnx8550_console_port = -1; 95 96void __init plat_mem_setup(void) 97{ 98 int i; 99 char* argptr; 100 101 board_setup(); /* board specific setup */ 102 103 _machine_restart = pnx8550_machine_restart; 104 _machine_halt = pnx8550_machine_halt; 105 pm_power_off = pnx8550_machine_power_off; 106 107 board_time_init = pnx8550_time_init; 108 109 /* Clear the Global 2 Register, PCI Inta Output Enable Registers 110 Bit 1:Enable DAC Powerdown 111 -> 0:DACs are enabled and are working normally 112 1:DACs are powerdown 113 Bit 0:Enable of PCI inta output 114 -> 0 = Disable PCI inta output 115 1 = Enable PCI inta output 116 */ 117 PNX8550_GLB2_ENAB_INTA_O = 0; 118 119 /* IO/MEM resources. */ 120 set_io_port_base(KSEG1); 121 ioport_resource.start = 0; 122 ioport_resource.end = ~0; 123 iomem_resource.start = 0; 124 iomem_resource.end = ~0; 125 126 /* Request I/O space for devices on this board */ 127 for (i = 0; i < STANDARD_IO_RESOURCES; i++) 128 request_resource(&ioport_resource, standard_io_resources + i); 129 130 /* Place the Mode Control bit for GPIO pin 16 in primary function */ 131 /* Pin 16 is used by UART1, UA1_TX */ 132 outl((PNX8550_GPIO_MODE_PRIMOP << PNX8550_GPIO_MC_16_BIT) | 133 (PNX8550_GPIO_MODE_PRIMOP << PNX8550_GPIO_MC_17_BIT), 134 PNX8550_GPIO_MC1); 135 136 argptr = prom_getcmdline(); 137 if ((argptr = strstr(argptr, "console=ttyS")) != NULL) { 138 argptr += strlen("console=ttyS"); 139 pnx8550_console_port = *argptr == '0' ? 0 : 1; 140 141 /* We must initialize the UART (console) before early printk */ 142 /* Set LCR to 8-bit and BAUD to 38400 (no 5) */ 143 ip3106_lcr(UART_BASE, pnx8550_console_port) = 144 PNX8XXX_UART_LCR_8BIT; 145 ip3106_baud(UART_BASE, pnx8550_console_port) = 5; 146 } 147 148#ifdef CONFIG_KGDB 149 argptr = prom_getcmdline(); 150 if ((argptr = strstr(argptr, "kgdb=ttyS")) != NULL) { 151 int line; 152 argptr += strlen("kgdb=ttyS"); 153 line = *argptr == '0' ? 0 : 1; 154 rs_kgdb_hook(line); 155 pr_info("KGDB: Using ttyS%i for session, " 156 "please connect your debugger\n", line ? 1 : 0); 157 } 158#endif 159 return; 160} 161