1/*
2 * Wind River SBC8560 board specific routines
3 *
4 * Maintainer: Kumar Gala
5 *
6 * Copyright 2004 Freescale Semiconductor Inc.
7 *
8 * This program is free software; you can redistribute  it and/or modify it
9 * under  the terms of  the GNU General  Public License as published by the
10 * Free Software Foundation;  either version 2 of the  License, or (at your
11 * option) any later version.
12 */
13
14#include <linux/stddef.h>
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/errno.h>
18#include <linux/reboot.h>
19#include <linux/pci.h>
20#include <linux/kdev_t.h>
21#include <linux/major.h>
22#include <linux/console.h>
23#include <linux/delay.h>
24#include <linux/seq_file.h>
25#include <linux/root_dev.h>
26#include <linux/serial.h>
27#include <linux/tty.h>	/* for linux/serial_core.h */
28#include <linux/serial_core.h>
29#include <linux/initrd.h>
30#include <linux/module.h>
31#include <linux/fsl_devices.h>
32
33#include <asm/system.h>
34#include <asm/pgtable.h>
35#include <asm/page.h>
36#include <asm/atomic.h>
37#include <asm/time.h>
38#include <asm/io.h>
39#include <asm/machdep.h>
40#include <asm/open_pic.h>
41#include <asm/bootinfo.h>
42#include <asm/pci-bridge.h>
43#include <asm/mpc85xx.h>
44#include <asm/irq.h>
45#include <asm/immap_85xx.h>
46#include <asm/kgdb.h>
47#include <asm/ppc_sys.h>
48#include <mm/mmu_decl.h>
49
50#include <syslib/ppc85xx_common.h>
51#include <syslib/ppc85xx_setup.h>
52
53#ifdef CONFIG_SERIAL_8250
54static void __init
55sbc8560_early_serial_map(void)
56{
57        struct uart_port uart_req;
58
59        /* Setup serial port access */
60        memset(&uart_req, 0, sizeof (uart_req));
61	uart_req.irq = MPC85xx_IRQ_EXT9;
62	uart_req.flags = STD_COM_FLAGS;
63	uart_req.uartclk = BASE_BAUD * 16;
64        uart_req.iotype = UPIO_MEM;
65        uart_req.mapbase = UARTA_ADDR;
66        uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART0_SIZE);
67	uart_req.type = PORT_16650;
68
69#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
70        gen550_init(0, &uart_req);
71#endif
72
73        if (early_serial_setup(&uart_req) != 0)
74                printk("Early serial init of port 0 failed\n");
75
76        /* Assume early_serial_setup() doesn't modify uart_req */
77	uart_req.line = 1;
78        uart_req.mapbase = UARTB_ADDR;
79        uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART1_SIZE);
80	uart_req.irq = MPC85xx_IRQ_EXT10;
81
82#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
83        gen550_init(1, &uart_req);
84#endif
85
86        if (early_serial_setup(&uart_req) != 0)
87                printk("Early serial init of port 1 failed\n");
88}
89#endif
90
91/* ************************************************************************
92 *
93 * Setup the architecture
94 *
95 */
96static void __init
97sbc8560_setup_arch(void)
98{
99	bd_t *binfo = (bd_t *) __res;
100	unsigned int freq;
101	struct gianfar_platform_data *pdata;
102	struct gianfar_mdio_data *mdata;
103
104	/* get the core frequency */
105	freq = binfo->bi_intfreq;
106
107	if (ppc_md.progress)
108		ppc_md.progress("sbc8560_setup_arch()", 0);
109
110	/* Set loops_per_jiffy to a half-way reasonable value,
111	   for use until calibrate_delay gets called. */
112	loops_per_jiffy = freq / HZ;
113
114#ifdef CONFIG_PCI
115	/* setup PCI host bridges */
116	mpc85xx_setup_hose();
117#endif
118#ifdef CONFIG_SERIAL_8250
119	sbc8560_early_serial_map();
120#endif
121#ifdef CONFIG_SERIAL_TEXT_DEBUG
122	/* Invalidate the entry we stole earlier the serial ports
123	 * should be properly mapped */
124	invalidate_tlbcam_entry(num_tlbcam_entries - 1);
125#endif
126
127	/* setup the board related info for the MDIO bus */
128	mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC85xx_MDIO);
129
130	mdata->irq[25] = MPC85xx_IRQ_EXT6;
131	mdata->irq[26] = MPC85xx_IRQ_EXT7;
132	mdata->irq[31] = PHY_POLL;
133
134	/* setup the board related information for the enet controllers */
135	pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
136	if (pdata) {
137		pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
138		pdata->bus_id = 0;
139		pdata->phy_id = 25;
140		memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
141	}
142
143	pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
144	if (pdata) {
145		pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
146		pdata->bus_id = 0;
147		pdata->phy_id = 26;
148		memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
149	}
150
151#ifdef CONFIG_BLK_DEV_INITRD
152	if (initrd_start)
153		ROOT_DEV = Root_RAM0;
154	else
155#endif
156#ifdef  CONFIG_ROOT_NFS
157		ROOT_DEV = Root_NFS;
158#else
159		ROOT_DEV = Root_HDA1;
160#endif
161}
162
163/* ************************************************************************ */
164void __init
165platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
166	      unsigned long r6, unsigned long r7)
167{
168	/* parse_bootinfo must always be called first */
169	parse_bootinfo(find_bootinfo());
170
171	/*
172	 * If we were passed in a board information, copy it into the
173	 * residual data area.
174	 */
175	if (r3) {
176		memcpy((void *) __res, (void *) (r3 + KERNELBASE),
177		       sizeof (bd_t));
178	}
179
180#ifdef CONFIG_SERIAL_TEXT_DEBUG
181	/* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
182	settlbcam(num_tlbcam_entries - 1, UARTA_ADDR,
183		  UARTA_ADDR, 0x1000, _PAGE_IO, 0);
184#endif
185
186#if defined(CONFIG_BLK_DEV_INITRD)
187	/*
188	 * If the init RAM disk has been configured in, and there's a valid
189	 * starting address for it, set it up.
190	 */
191	if (r4) {
192		initrd_start = r4 + KERNELBASE;
193		initrd_end = r5 + KERNELBASE;
194	}
195#endif				/* CONFIG_BLK_DEV_INITRD */
196
197	/* Copy the kernel command line arguments to a safe place. */
198
199	if (r6) {
200		*(char *) (r7 + KERNELBASE) = 0;
201		strcpy(cmd_line, (char *) (r6 + KERNELBASE));
202	}
203
204	identify_ppc_sys_by_id(mfspr(SPRN_SVR));
205
206	/* setup the PowerPC module struct */
207	ppc_md.setup_arch = sbc8560_setup_arch;
208	ppc_md.show_cpuinfo = sbc8560_show_cpuinfo;
209
210	ppc_md.init_IRQ = sbc8560_init_IRQ;
211	ppc_md.get_irq = openpic_get_irq;
212
213	ppc_md.restart = mpc85xx_restart;
214	ppc_md.power_off = mpc85xx_power_off;
215	ppc_md.halt = mpc85xx_halt;
216
217	ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
218
219	ppc_md.time_init = NULL;
220	ppc_md.set_rtc_time = NULL;
221	ppc_md.get_rtc_time = NULL;
222	ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
223
224#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
225	ppc_md.progress = gen550_progress;
226#endif	/* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
227#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
228	ppc_md.early_serial_map = sbc8560_early_serial_map;
229#endif	/* CONFIG_SERIAL_8250 && CONFIG_KGDB */
230
231	if (ppc_md.progress)
232		ppc_md.progress("sbc8560_init(): exit", 0);
233}
234