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gerrit-public.fairphone.software / kernel / msm-5.4 / bdf21b18b4abf983db38f04ef7fec88f47389867 / . / arch / mips / philips / pnx8550 / common / setup.c
blob: ee6bf72094f66724be771e0796224ae3409ab31a [file] [log] [blame]
Pete Popovbdf21b12005-07-14 17:47:57 +0000[diff] [blame^]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/config.h>
21#include <linux/init.h>
22#include <linux/sched.h>
23#include <linux/ioport.h>
24#include <linux/mm.h>
25#include <linux/delay.h>
26#include <linux/interrupt.h>
27#include <linux/serial_ip3106.h>
28
29#include <asm/cpu.h>
30#include <asm/bootinfo.h>
31#include <asm/irq.h>
32#include <asm/mipsregs.h>
33#include <asm/reboot.h>
34#include <asm/pgtable.h>
35#include <asm/time.h>
36
37#include <glb.h>
38#include <int.h>
39#include <pci.h>
40#include <uart.h>
41#include <nand.h>
42
43extern void prom_printf(char *fmt, ...);
44
45extern void __init board_setup(void);
46extern void pnx8550_machine_restart(char *);
47extern void pnx8550_machine_halt(void);
48extern void pnx8550_machine_power_off(void);
49extern struct resource ioport_resource;
50extern struct resource iomem_resource;
51extern void (*board_time_init)(void);
52extern void pnx8550_time_init(void);
53extern void (*board_timer_setup)(struct irqaction *irq);
54extern void pnx8550_timer_setup(struct irqaction *irq);
55extern void rs_kgdb_hook(int tty_no);
56extern void prom_printf(char *fmt, ...);
57extern char *prom_getcmdline(void);
58
59struct resource standard_io_resources[] = {
60 {"dma1", 0x00, 0x1f, IORESOURCE_BUSY},
61 {"timer", 0x40, 0x5f, IORESOURCE_BUSY},
62 {"dma page reg", 0x80, 0x8f, IORESOURCE_BUSY},
63 {"dma2", 0xc0, 0xdf, IORESOURCE_BUSY},
64};
65
66#define STANDARD_IO_RESOURCES (sizeof(standard_io_resources)/sizeof(struct resource))
67
68extern struct resource pci_io_resource;
69extern struct resource pci_mem_resource;
70
71/* Return the total size of DRAM-memory, (RANK0 + RANK1) */
72unsigned long get_system_mem_size(void)
73{
74 /* Read IP2031_RANK0_ADDR_LO */
75 unsigned long dram_r0_lo = inl(PCI_BASE | 0x65010);
76 /* Read IP2031_RANK1_ADDR_HI */
77 unsigned long dram_r1_hi = inl(PCI_BASE | 0x65018);
78
79 return dram_r1_hi - dram_r0_lo + 1;
80}
81
82int pnx8550_console_port = -1;
83
84void __init plat_setup(void)
85{
86 int i;
87 char* argptr;
88
89 board_setup(); /* board specific setup */
90
91 _machine_restart = pnx8550_machine_restart;
92 _machine_halt = pnx8550_machine_halt;
93 _machine_power_off = pnx8550_machine_power_off;
94
95 board_time_init = pnx8550_time_init;
96 board_timer_setup = pnx8550_timer_setup;
97
98 /* Clear the Global 2 Register, PCI Inta Output Enable Registers
99 Bit 1:Enable DAC Powerdown
100 -> 0:DACs are enabled and are working normally
101 1:DACs are powerdown
102 Bit 0:Enable of PCI inta output
103 -> 0 = Disable PCI inta output
104 1 = Enable PCI inta output
105 */
106 PNX8550_GLB2_ENAB_INTA_O = 0;
107
108 /* IO/MEM resources. */
109 set_io_port_base(KSEG1);
110 ioport_resource.start = 0;
111 ioport_resource.end = ~0;
112 iomem_resource.start = 0;
113 iomem_resource.end = ~0;
114
115 /* Request I/O space for devices on this board */
116 for (i = 0; i < STANDARD_IO_RESOURCES; i++)
117 request_resource(&ioport_resource, standard_io_resources + i);
118
119 /* Place the Mode Control bit for GPIO pin 16 in primary function */
120 /* Pin 16 is used by UART1, UA1_TX */
121 outl((PNX8550_GPIO_MODE_PRIMOP << PNX8550_GPIO_MC_16_BIT) |
122 (PNX8550_GPIO_MODE_PRIMOP << PNX8550_GPIO_MC_17_BIT),
123 PNX8550_GPIO_MC1);
124
125 argptr = prom_getcmdline();
126 if ((argptr = strstr(argptr, "console=ttyS")) != NULL) {
127 argptr += strlen("console=ttyS");
128 pnx8550_console_port = *argptr == '0' ? 0 : 1;
129
130 /* We must initialize the UART (console) before prom_printf */
131 /* Set LCR to 8-bit and BAUD to 38400 (no 5) */
132 ip3106_lcr(UART_BASE, pnx8550_console_port) =
133 IP3106_UART_LCR_8BIT;
134 ip3106_baud(UART_BASE, pnx8550_console_port) = 5;
135 }
136
137#ifdef CONFIG_KGDB
138 argptr = prom_getcmdline();
139 if ((argptr = strstr(argptr, "kgdb=ttyS")) != NULL) {
140 int line;
141 argptr += strlen("kgdb=ttyS");
142 line = *argptr == '0' ? 0 : 1;
143 rs_kgdb_hook(line);
144 prom_printf("KGDB: Using ttyS%i for session, "
145 "please connect your debugger\n", line ? 1 : 0);
146 }
147#endif
148 return;
149}