2 * arch/ppc/platforms/lite5200.c
4 * Platform support file for the Freescale LITE5200 based on MPC52xx.
5 * A maximum of this file should be moved to syslib/mpc52xx_?????
6 * so that new platform based on MPC52xx need a minimal platform file
7 * ( avoid code duplication )
10 * Maintainer : Sylvain Munaut <tnt@246tNt.com>
12 * Based on the 2.4 code written by Kent Borg,
13 * Dale Farnsworth <dale.farnsworth@mvista.com> and
14 * Wolfgang Denk <wd@denx.de>
16 * Copyright 2004 Sylvain Munaut <tnt@246tNt.com>
17 * Copyright 2003 Motorola Inc.
18 * Copyright 2003 MontaVista Software Inc.
19 * Copyright 2003 DENX Software Engineering (wd@denx.de)
21 * This file is licensed under the terms of the GNU General Public License
22 * version 2. This program is licensed "as is" without any warranty of any
23 * kind, whether express or implied.
26 #include <linux/config.h>
27 #include <linux/initrd.h>
28 #include <linux/seq_file.h>
29 #include <linux/kdev_t.h>
30 #include <linux/root_dev.h>
31 #include <linux/console.h>
33 #include <asm/bootinfo.h>
36 #include <asm/mpc52xx.h>
39 extern int powersave_nap
;
41 /* Board data given by U-Boot */
43 EXPORT_SYMBOL(__res
); /* For modules */
46 /* ======================================================================== */
47 /* OCP device definition */
48 /* For board/shared resources like PSCs */
49 /* ======================================================================== */
50 /* Be sure not to load conficting devices : e.g. loading the UART drivers for
51 * PSC1 and then also loading a AC97 for this same PSC.
52 * For details about how to create an entry, look in the doc of the concerned
53 * driver ( eg drivers/serial/mpc52xx_uart.c for the PSC in uart mode )
56 struct ocp_def board_ocp
[] = {
58 .vendor
= OCP_VENDOR_FREESCALE
,
59 .function
= OCP_FUNC_PSC_UART
,
61 .paddr
= MPC52xx_PSC1
,
62 .irq
= MPC52xx_PSC1_IRQ
,
65 { /* Terminating entry */
66 .vendor
= OCP_VENDOR_INVALID
71 /* ======================================================================== */
72 /* Platform specific code */
73 /* ======================================================================== */
76 lite5200_show_cpuinfo(struct seq_file
*m
)
78 seq_printf(m
, "machine\t\t: Freescale LITE5200\n");
83 lite5200_setup_cpu(void)
85 struct mpc52xx_intr
*intr
;
90 intr
= (struct mpc52xx_intr
*)
91 ioremap(MPC52xx_INTR
,sizeof(struct mpc52xx_intr
));
94 printk("lite5200.c: Error while mapping INTR during lite5200_setup_cpu\n");
98 /* IRQ[0-3] setup : IRQ0 - Level Active Low */
99 /* IRQ[1-3] - Level Active High */
100 intr_ctrl
= in_be32(&intr
->ctrl
);
101 intr_ctrl
&= ~0x00ff0000;
102 intr_ctrl
|= 0x00c00000;
103 out_be32(&intr
->ctrl
, intr_ctrl
);
107 if (intr
) iounmap(intr
);
111 lite5200_setup_arch(void)
113 /* Add board OCP definitions */
114 mpc52xx_add_board_devices(board_ocp
);
116 /* CPU & Port mux setup */
117 lite5200_setup_cpu();
121 platform_init(unsigned long r3
, unsigned long r4
, unsigned long r5
,
122 unsigned long r6
, unsigned long r7
)
124 /* Generic MPC52xx platform initialization */
125 /* TODO Create one and move a max of stuff in it.
126 Put this init in the syslib */
128 struct bi_record
*bootinfo
= find_bootinfo();
131 parse_bootinfo(bootinfo
);
133 /* Load the bd_t board info structure */
135 memcpy((void*)&__res
,(void*)(r3
+KERNELBASE
),
138 #ifdef CONFIG_BLK_DEV_INITRD
139 /* Load the initrd */
141 initrd_start
= r4
+ KERNELBASE
;
142 initrd_end
= r5
+ KERNELBASE
;
146 /* Load the command line */
148 *(char *)(r7
+KERNELBASE
) = 0;
149 strcpy(cmd_line
, (char *)(r6
+KERNELBASE
));
156 /* No ISA bus AFAIK */
161 powersave_nap
= 1; /* We allow this platform to NAP */
163 /* Setup the ppc_md struct */
164 ppc_md
.setup_arch
= lite5200_setup_arch
;
165 ppc_md
.show_cpuinfo
= lite5200_show_cpuinfo
;
166 ppc_md
.show_percpuinfo
= NULL
;
167 ppc_md
.init_IRQ
= mpc52xx_init_irq
;
168 ppc_md
.get_irq
= mpc52xx_get_irq
;
170 ppc_md
.find_end_of_memory
= mpc52xx_find_end_of_memory
;
171 ppc_md
.setup_io_mappings
= mpc52xx_map_io
;
173 ppc_md
.restart
= mpc52xx_restart
;
174 ppc_md
.power_off
= mpc52xx_power_off
;
175 ppc_md
.halt
= mpc52xx_halt
;
177 /* No time keeper on the LITE5200 */
178 ppc_md
.time_init
= NULL
;
179 ppc_md
.get_rtc_time
= NULL
;
180 ppc_md
.set_rtc_time
= NULL
;
182 ppc_md
.calibrate_decr
= mpc52xx_calibrate_decr
;
183 #ifdef CONFIG_SERIAL_TEXT_DEBUG
184 ppc_md
.progress
= mpc52xx_progress
;