2 * arch/ppc/platforms/85xx/mpc8560_ads.c
4 * MPC8560ADS board specific routines
6 * Maintainer: Kumar Gala <kumar.gala@freescale.com>
8 * Copyright 2004 Freescale Semiconductor Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
16 #include <linux/config.h>
17 #include <linux/stddef.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/errno.h>
21 #include <linux/reboot.h>
22 #include <linux/pci.h>
23 #include <linux/kdev_t.h>
24 #include <linux/major.h>
25 #include <linux/console.h>
26 #include <linux/delay.h>
27 #include <linux/irq.h>
28 #include <linux/seq_file.h>
29 #include <linux/root_dev.h>
30 #include <linux/serial.h>
31 #include <linux/tty.h> /* for linux/serial_core.h */
32 #include <linux/serial_core.h>
33 #include <linux/initrd.h>
34 #include <linux/module.h>
35 #include <linux/fsl_devices.h>
37 #include <asm/system.h>
38 #include <asm/pgtable.h>
40 #include <asm/atomic.h>
43 #include <asm/machdep.h>
45 #include <asm/open_pic.h>
46 #include <asm/bootinfo.h>
47 #include <asm/pci-bridge.h>
48 #include <asm/mpc85xx.h>
50 #include <asm/immap_85xx.h>
52 #include <asm/ppc_sys.h>
54 #include <mm/mmu_decl.h>
56 #include <syslib/cpm2_pic.h>
57 #include <syslib/ppc85xx_common.h>
58 #include <syslib/ppc85xx_setup.h>
60 extern void cpm2_reset(void);
62 /* ************************************************************************
64 * Setup the architecture
69 mpc8560ads_setup_arch(void)
71 bd_t *binfo = (bd_t *) __res;
73 struct gianfar_platform_data *pdata;
77 /* get the core frequency */
78 freq = binfo->bi_intfreq;
81 ppc_md.progress("mpc8560ads_setup_arch()", 0);
83 /* Set loops_per_jiffy to a half-way reasonable value,
84 for use until calibrate_delay gets called. */
85 loops_per_jiffy = freq / HZ;
88 /* setup PCI host bridges */
92 /* setup the board related information for the enet controllers */
93 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
94 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
95 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
97 /* fixup phy address */
98 pdata->phy_reg_addr += binfo->bi_immr_base;
99 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
101 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
102 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
103 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
105 /* fixup phy address */
106 pdata->phy_reg_addr += binfo->bi_immr_base;
107 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
109 #ifdef CONFIG_BLK_DEV_INITRD
111 ROOT_DEV = Root_RAM0;
114 #ifdef CONFIG_ROOT_NFS
117 ROOT_DEV = Root_HDA1;
121 static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
123 while ((irq = cpm2_get_irq(regs)) >= 0)
128 static struct irqaction cpm2_irqaction = {
129 .handler = cpm2_cascade,
130 .flags = SA_INTERRUPT,
131 .mask = CPU_MASK_NONE,
132 .name = "cpm2_cascade",
136 mpc8560_ads_init_IRQ(void)
139 mpc85xx_ads_init_IRQ();
144 setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction);
151 /* ************************************************************************ */
153 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
154 unsigned long r6, unsigned long r7)
156 /* parse_bootinfo must always be called first */
157 parse_bootinfo(find_bootinfo());
160 * If we were passed in a board information, copy it into the
161 * residual data area.
164 memcpy((void *) __res, (void *) (r3 + KERNELBASE),
168 #if defined(CONFIG_BLK_DEV_INITRD)
170 * If the init RAM disk has been configured in, and there's a valid
171 * starting address for it, set it up.
174 initrd_start = r4 + KERNELBASE;
175 initrd_end = r5 + KERNELBASE;
177 #endif /* CONFIG_BLK_DEV_INITRD */
179 /* Copy the kernel command line arguments to a safe place. */
182 *(char *) (r7 + KERNELBASE) = 0;
183 strcpy(cmd_line, (char *) (r6 + KERNELBASE));
186 identify_ppc_sys_by_id(mfspr(SPRN_SVR));
188 /* setup the PowerPC module struct */
189 ppc_md.setup_arch = mpc8560ads_setup_arch;
190 ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo;
192 ppc_md.init_IRQ = mpc8560_ads_init_IRQ;
193 ppc_md.get_irq = openpic_get_irq;
195 ppc_md.restart = mpc85xx_restart;
196 ppc_md.power_off = mpc85xx_power_off;
197 ppc_md.halt = mpc85xx_halt;
199 ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
201 ppc_md.time_init = NULL;
202 ppc_md.set_rtc_time = NULL;
203 ppc_md.get_rtc_time = NULL;
204 ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
207 ppc_md.progress("mpc8560ads_init(): exit", 0);