2 * Platform support file for the Freescale LITE5200 based on MPC52xx.
3 * A maximum of this file should be moved to syslib/mpc52xx_?????
4 * so that new platform based on MPC52xx need a minimal platform file
5 * ( avoid code duplication )
8 * Maintainer : Sylvain Munaut <tnt@246tNt.com>
10 * Based on the 2.4 code written by Kent Borg,
11 * Dale Farnsworth <dale.farnsworth@mvista.com> and
12 * Wolfgang Denk <wd@denx.de>
14 * Copyright 2004-2005 Sylvain Munaut <tnt@246tNt.com>
15 * Copyright 2003 Motorola Inc.
16 * Copyright 2003 MontaVista Software Inc.
17 * Copyright 2003 DENX Software Engineering (wd@denx.de)
19 * This file is licensed under the terms of the GNU General Public License
20 * version 2. This program is licensed "as is" without any warranty of any
21 * kind, whether express or implied.
24 #include <linux/initrd.h>
25 #include <linux/seq_file.h>
26 #include <linux/kdev_t.h>
27 #include <linux/root_dev.h>
28 #include <linux/console.h>
29 #include <linux/module.h>
31 #include <asm/bootinfo.h>
33 #include <asm/mpc52xx.h>
34 #include <asm/ppc_sys.h>
35 #include <asm/machdep.h>
36 #include <asm/pci-bridge.h>
39 extern int powersave_nap;
41 /* Board data given by U-Boot */
43 EXPORT_SYMBOL(__res); /* For modules */
46 /* ======================================================================== */
47 /* Platform specific code */
48 /* ======================================================================== */
50 /* Supported PSC function in "preference" order */
51 struct mpc52xx_psc_func mpc52xx_psc_functions[] = {
55 { .id = -1, /* End entry */
62 lite5200_show_cpuinfo(struct seq_file *m)
64 seq_printf(m, "machine\t\t: Freescale LITE5200\n");
69 #ifdef CONFIG_LITE5200B
71 lite5200_map_irq(struct pci_dev *dev, unsigned char idsel,
74 static char pci_irq_table[][4] =
76 * PCI IDSEL/INTPIN->INTLINE
80 {MPC52xx_IRQ0, MPC52xx_IRQ1, MPC52xx_IRQ2, MPC52xx_IRQ3},
81 {MPC52xx_IRQ1, MPC52xx_IRQ2, MPC52xx_IRQ3, MPC52xx_IRQ0},
84 const long min_idsel = 24, max_idsel = 25, irqs_per_slot = 4;
85 return PCI_IRQ_TABLE_LOOKUP;
87 #else /* Original Lite */
89 lite5200_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
91 return (pin == 1) && (idsel==24) ? MPC52xx_IRQ0 : -1;
97 lite5200_setup_cpu(void)
99 struct mpc52xx_gpio __iomem *gpio;
100 struct mpc52xx_intr __iomem *intr;
106 gpio = ioremap(MPC52xx_PA(MPC52xx_GPIO_OFFSET), MPC52xx_GPIO_SIZE);
107 intr = ioremap(MPC52xx_PA(MPC52xx_INTR_OFFSET), MPC52xx_INTR_SIZE);
109 if (!gpio || !intr) {
110 printk(KERN_ERR __FILE__ ": "
111 "Error while mapping GPIO/INTR during "
112 "lite5200_setup_cpu\n");
116 /* Get port mux config */
117 port_config = in_be32(&gpio->port_config);
119 /* 48Mhz internal, pin is GPIO */
120 port_config &= ~0x00800000;
123 port_config &= ~0x00007000; /* Differential mode - USB1 only */
124 port_config |= 0x00001000;
126 /* ATA CS is on csb_4/5 */
127 port_config &= ~0x03000000;
128 port_config |= 0x01000000;
130 /* Commit port config */
131 out_be32(&gpio->port_config, port_config);
134 intr_ctrl = in_be32(&intr->ctrl);
135 intr_ctrl &= ~0x00ff0000;
136 #ifdef CONFIG_LITE5200B
137 /* IRQ[0-3] Level Active Low */
138 intr_ctrl |= 0x00ff0000;
140 /* IRQ0 Level Active Low
141 * IRQ[1-3] Level Active High */
142 intr_ctrl |= 0x00c00000;
144 out_be32(&intr->ctrl, intr_ctrl);
148 if (gpio) iounmap(gpio);
149 if (intr) iounmap(intr);
153 lite5200_setup_arch(void)
155 /* CPU & Port mux setup */
156 mpc52xx_setup_cpu(); /* Generic */
157 lite5200_setup_cpu(); /* Platform specific */
160 /* PCI Bridge setup */
161 mpc52xx_find_bridges();
166 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
167 unsigned long r6, unsigned long r7)
169 /* Generic MPC52xx platform initialization */
170 /* TODO Create one and move a max of stuff in it.
171 Put this init in the syslib */
173 struct bi_record *bootinfo = find_bootinfo();
176 parse_bootinfo(bootinfo);
178 /* Load the bd_t board info structure */
180 memcpy((void*)&__res,(void*)(r3+KERNELBASE),
183 #ifdef CONFIG_BLK_DEV_INITRD
184 /* Load the initrd */
186 initrd_start = r4 + KERNELBASE;
187 initrd_end = r5 + KERNELBASE;
191 /* Load the command line */
193 *(char *)(r7+KERNELBASE) = 0;
194 strcpy(cmd_line, (char *)(r6+KERNELBASE));
198 /* PPC Sys identification */
199 identify_ppc_sys_by_id(mfspr(SPRN_SVR));
204 /* No ISA bus by default */
211 /* This is provided as an example on how to do it. But you
212 need to be aware that NAP disable bus snoop and that may
213 be required for some devices to work properly, like USB ... */
214 /* powersave_nap = 1; */
217 /* Setup the ppc_md struct */
218 ppc_md.setup_arch = lite5200_setup_arch;
219 ppc_md.show_cpuinfo = lite5200_show_cpuinfo;
220 ppc_md.show_percpuinfo = NULL;
221 ppc_md.init_IRQ = mpc52xx_init_irq;
222 ppc_md.get_irq = mpc52xx_get_irq;
225 ppc_md.pci_map_irq = lite5200_map_irq;
228 ppc_md.find_end_of_memory = mpc52xx_find_end_of_memory;
229 ppc_md.setup_io_mappings = mpc52xx_map_io;
231 ppc_md.restart = mpc52xx_restart;
232 ppc_md.power_off = mpc52xx_power_off;
233 ppc_md.halt = mpc52xx_halt;
235 /* No time keeper on the LITE5200 */
236 ppc_md.time_init = NULL;
237 ppc_md.get_rtc_time = NULL;
238 ppc_md.set_rtc_time = NULL;
240 ppc_md.calibrate_decr = mpc52xx_calibrate_decr;
241 #ifdef CONFIG_SERIAL_TEXT_DEBUG
242 ppc_md.progress = mpc52xx_progress;