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>
23 #include <linux/irq.h>
25 #include <linux/delay.h>
26 #include <linux/interrupt.h>
27 #include <linux/serial_pnx8xxx.h>
31 #include <asm/bootinfo.h>
33 #include <asm/mipsregs.h>
34 #include <asm/reboot.h>
35 #include <asm/pgtable.h>
44 extern void __init board_setup(void);
45 extern void pnx8550_machine_restart(char *);
46 extern void pnx8550_machine_halt(void);
47 extern void pnx8550_machine_power_off(void);
48 extern struct resource ioport_resource;
49 extern struct resource iomem_resource;
50 extern void pnx8550_time_init(void);
51 extern void rs_kgdb_hook(int tty_no);
52 extern char *prom_getcmdline(void);
54 struct resource standard_io_resources[] = {
59 .flags = IORESOURCE_BUSY
64 .flags = IORESOURCE_BUSY
68 .name = "dma page reg",
69 .flags = IORESOURCE_BUSY
74 .flags = IORESOURCE_BUSY
78 #define STANDARD_IO_RESOURCES (sizeof(standard_io_resources)/sizeof(struct resource))
80 extern struct resource pci_io_resource;
81 extern struct resource pci_mem_resource;
83 /* Return the total size of DRAM-memory, (RANK0 + RANK1) */
84 unsigned long get_system_mem_size(void)
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);
91 return dram_r1_hi - dram_r0_lo + 1;
94 int pnx8550_console_port = -1;
96 void __init plat_mem_setup(void)
101 board_setup(); /* board specific setup */
103 _machine_restart = pnx8550_machine_restart;
104 _machine_halt = pnx8550_machine_halt;
105 pm_power_off = pnx8550_machine_power_off;
107 board_time_init = pnx8550_time_init;
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
113 Bit 0:Enable of PCI inta output
114 -> 0 = Disable PCI inta output
115 1 = Enable PCI inta output
117 PNX8550_GLB2_ENAB_INTA_O = 0;
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;
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);
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),
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;
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;
149 argptr = prom_getcmdline();
150 if ((argptr = strstr(argptr, "kgdb=ttyS")) != NULL) {
152 argptr += strlen("kgdb=ttyS");
153 line = *argptr == '0' ? 0 : 1;
155 pr_info("KGDB: Using ttyS%i for session, "
156 "please connect your debugger\n", line ? 1 : 0);