2 * arch/ppc/platforms/85xx/mpc8540_ads.c
4 * MPC8540ADS 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>
44 #include <asm/open_pic.h>
45 #include <asm/bootinfo.h>
46 #include <asm/pci-bridge.h>
47 #include <asm/mpc85xx.h>
49 #include <asm/immap_85xx.h>
51 #include <asm/ppc_sys.h>
52 #include <mm/mmu_decl.h>
54 #include <syslib/ppc85xx_setup.h>
56 /* ************************************************************************
58 * Setup the architecture
62 mpc8540ads_setup_arch(void)
64 bd_t *binfo = (bd_t *) __res;
66 struct gianfar_platform_data *pdata;
68 /* get the core frequency */
69 freq = binfo->bi_intfreq;
72 ppc_md.progress("mpc8540ads_setup_arch()", 0);
74 /* Set loops_per_jiffy to a half-way reasonable value,
75 for use until calibrate_delay gets called. */
76 loops_per_jiffy = freq / HZ;
79 /* setup PCI host bridges */
83 #ifdef CONFIG_SERIAL_8250
84 mpc85xx_early_serial_map();
87 #ifdef CONFIG_SERIAL_TEXT_DEBUG
88 /* Invalidate the entry we stole earlier the serial ports
89 * should be properly mapped */
90 invalidate_tlbcam_entry(num_tlbcam_entries - 1);
93 /* setup the board related information for the enet controllers */
94 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
95 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
96 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
98 /* fixup phy address */
99 pdata->phy_reg_addr += binfo->bi_immr_base;
100 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
102 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
103 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
104 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
106 /* fixup phy address */
107 pdata->phy_reg_addr += binfo->bi_immr_base;
108 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
110 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_FEC);
111 pdata->board_flags = 0;
112 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
114 /* fixup phy address */
115 pdata->phy_reg_addr += binfo->bi_immr_base;
116 memcpy(pdata->mac_addr, binfo->bi_enet2addr, 6);
118 #ifdef CONFIG_BLK_DEV_INITRD
120 ROOT_DEV = Root_RAM0;
123 #ifdef CONFIG_ROOT_NFS
126 ROOT_DEV = Root_HDA1;
130 /* ************************************************************************ */
132 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
133 unsigned long r6, unsigned long r7)
135 /* parse_bootinfo must always be called first */
136 parse_bootinfo(find_bootinfo());
139 * If we were passed in a board information, copy it into the
140 * residual data area.
143 memcpy((void *) __res, (void *) (r3 + KERNELBASE),
146 #ifdef CONFIG_SERIAL_TEXT_DEBUG
148 bd_t *binfo = (bd_t *) __res;
151 /* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
152 settlbcam(num_tlbcam_entries - 1, binfo->bi_immr_base,
153 binfo->bi_immr_base, MPC85xx_CCSRBAR_SIZE, _PAGE_IO, 0);
155 memset(&p, 0, sizeof (p));
156 p.iotype = SERIAL_IO_MEM;
157 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART0_OFFSET;
158 p.uartclk = binfo->bi_busfreq;
162 memset(&p, 0, sizeof (p));
163 p.iotype = SERIAL_IO_MEM;
164 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART1_OFFSET;
165 p.uartclk = binfo->bi_busfreq;
171 #if defined(CONFIG_BLK_DEV_INITRD)
173 * If the init RAM disk has been configured in, and there's a valid
174 * starting address for it, set it up.
177 initrd_start = r4 + KERNELBASE;
178 initrd_end = r5 + KERNELBASE;
180 #endif /* CONFIG_BLK_DEV_INITRD */
182 /* Copy the kernel command line arguments to a safe place. */
185 *(char *) (r7 + KERNELBASE) = 0;
186 strcpy(cmd_line, (char *) (r6 + KERNELBASE));
189 identify_ppc_sys_by_id(mfspr(SPRN_SVR));
191 /* setup the PowerPC module struct */
192 ppc_md.setup_arch = mpc8540ads_setup_arch;
193 ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo;
195 ppc_md.init_IRQ = mpc85xx_ads_init_IRQ;
196 ppc_md.get_irq = openpic_get_irq;
198 ppc_md.restart = mpc85xx_restart;
199 ppc_md.power_off = mpc85xx_power_off;
200 ppc_md.halt = mpc85xx_halt;
202 ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
204 ppc_md.time_init = NULL;
205 ppc_md.set_rtc_time = NULL;
206 ppc_md.get_rtc_time = NULL;
207 ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
209 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
210 ppc_md.progress = gen550_progress;
211 #endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
212 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
213 ppc_md.early_serial_map = mpc85xx_early_serial_map;
214 #endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
217 ppc_md.progress("mpc8540ads_init(): exit", 0);