3 * 2.6 port, Embedded Alley Solutions, Inc
5 * Based on Per Hallsmark, per.hallsmark@mvista.com
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.
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
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.
20 #include <linux/init.h>
21 #include <linux/sched.h>
22 #include <linux/ioport.h>
24 #include <linux/delay.h>
25 #include <linux/interrupt.h>
26 #include <linux/serial_ip3106.h>
30 #include <asm/bootinfo.h>
32 #include <asm/mipsregs.h>
33 #include <asm/reboot.h>
34 #include <asm/pgtable.h>
43 extern void prom_printf(char *fmt, ...);
45 extern void __init board_setup(void);
46 extern void pnx8550_machine_restart(char *);
47 extern void pnx8550_machine_halt(void);
48 extern void pnx8550_machine_power_off(void);
49 extern struct resource ioport_resource;
50 extern struct resource iomem_resource;
51 extern void (*board_time_init)(void);
52 extern void pnx8550_time_init(void);
53 extern void (*board_timer_setup)(struct irqaction *irq);
54 extern void pnx8550_timer_setup(struct irqaction *irq);
55 extern void rs_kgdb_hook(int tty_no);
56 extern void prom_printf(char *fmt, ...);
57 extern char *prom_getcmdline(void);
59 struct resource standard_io_resources[] = {
64 .flags = IORESOURCE_BUSY
69 .flags = IORESOURCE_BUSY
73 .name = "dma page reg",
74 .flags = IORESOURCE_BUSY
79 .flags = IORESOURCE_BUSY
83 #define STANDARD_IO_RESOURCES (sizeof(standard_io_resources)/sizeof(struct resource))
85 extern struct resource pci_io_resource;
86 extern struct resource pci_mem_resource;
88 /* Return the total size of DRAM-memory, (RANK0 + RANK1) */
89 unsigned long get_system_mem_size(void)
91 /* Read IP2031_RANK0_ADDR_LO */
92 unsigned long dram_r0_lo = inl(PCI_BASE | 0x65010);
93 /* Read IP2031_RANK1_ADDR_HI */
94 unsigned long dram_r1_hi = inl(PCI_BASE | 0x65018);
96 return dram_r1_hi - dram_r0_lo + 1;
99 int pnx8550_console_port = -1;
101 void __init plat_mem_setup(void)
106 board_setup(); /* board specific setup */
108 _machine_restart = pnx8550_machine_restart;
109 _machine_halt = pnx8550_machine_halt;
110 pm_power_off = pnx8550_machine_power_off;
112 board_time_init = pnx8550_time_init;
113 board_timer_setup = pnx8550_timer_setup;
115 /* Clear the Global 2 Register, PCI Inta Output Enable Registers
116 Bit 1:Enable DAC Powerdown
117 -> 0:DACs are enabled and are working normally
119 Bit 0:Enable of PCI inta output
120 -> 0 = Disable PCI inta output
121 1 = Enable PCI inta output
123 PNX8550_GLB2_ENAB_INTA_O = 0;
125 /* IO/MEM resources. */
126 set_io_port_base(KSEG1);
127 ioport_resource.start = 0;
128 ioport_resource.end = ~0;
129 iomem_resource.start = 0;
130 iomem_resource.end = ~0;
132 /* Request I/O space for devices on this board */
133 for (i = 0; i < STANDARD_IO_RESOURCES; i++)
134 request_resource(&ioport_resource, standard_io_resources + i);
136 /* Place the Mode Control bit for GPIO pin 16 in primary function */
137 /* Pin 16 is used by UART1, UA1_TX */
138 outl((PNX8550_GPIO_MODE_PRIMOP << PNX8550_GPIO_MC_16_BIT) |
139 (PNX8550_GPIO_MODE_PRIMOP << PNX8550_GPIO_MC_17_BIT),
142 argptr = prom_getcmdline();
143 if ((argptr = strstr(argptr, "console=ttyS")) != NULL) {
144 argptr += strlen("console=ttyS");
145 pnx8550_console_port = *argptr == '0' ? 0 : 1;
147 /* We must initialize the UART (console) before prom_printf */
148 /* Set LCR to 8-bit and BAUD to 38400 (no 5) */
149 ip3106_lcr(UART_BASE, pnx8550_console_port) =
150 IP3106_UART_LCR_8BIT;
151 ip3106_baud(UART_BASE, pnx8550_console_port) = 5;
155 argptr = prom_getcmdline();
156 if ((argptr = strstr(argptr, "kgdb=ttyS")) != NULL) {
158 argptr += strlen("kgdb=ttyS");
159 line = *argptr == '0' ? 0 : 1;
161 prom_printf("KGDB: Using ttyS%i for session, "
162 "please connect your debugger\n", line ? 1 : 0);