2 * Wind River SBC8560 board specific routines
4 * Maintainer: Kumar Gala
6 * Copyright 2004 Freescale Semiconductor Inc.
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.
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>
33 #include <asm/system.h>
34 #include <asm/pgtable.h>
36 #include <asm/atomic.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>
45 #include <asm/immap_85xx.h>
47 #include <asm/ppc_sys.h>
48 #include <mm/mmu_decl.h>
50 #include <syslib/ppc85xx_common.h>
51 #include <syslib/ppc85xx_setup.h>
53 #ifdef CONFIG_SERIAL_8250
55 sbc8560_early_serial_map(void)
57 struct uart_port uart_req;
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;
69 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
70 gen550_init(0, &uart_req);
73 if (early_serial_setup(&uart_req) != 0)
74 printk("Early serial init of port 0 failed\n");
76 /* Assume early_serial_setup() doesn't modify uart_req */
78 uart_req.mapbase = UARTB_ADDR;
79 uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART1_SIZE);
80 uart_req.irq = MPC85xx_IRQ_EXT10;
82 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
83 gen550_init(1, &uart_req);
86 if (early_serial_setup(&uart_req) != 0)
87 printk("Early serial init of port 1 failed\n");
91 /* ************************************************************************
93 * Setup the architecture
97 sbc8560_setup_arch(void)
99 bd_t *binfo = (bd_t *) __res;
101 struct gianfar_platform_data *pdata;
102 struct gianfar_mdio_data *mdata;
104 /* get the core frequency */
105 freq = binfo->bi_intfreq;
108 ppc_md.progress("sbc8560_setup_arch()", 0);
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;
115 /* setup PCI host bridges */
116 mpc85xx_setup_hose();
118 #ifdef CONFIG_SERIAL_8250
119 sbc8560_early_serial_map();
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);
127 /* setup the board related info for the MDIO bus */
128 mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC85xx_MDIO);
130 mdata->irq[25] = MPC85xx_IRQ_EXT6;
131 mdata->irq[26] = MPC85xx_IRQ_EXT7;
134 /* setup the board related information for the enet controllers */
135 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
137 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
140 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
143 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
145 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
148 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
151 #ifdef CONFIG_BLK_DEV_INITRD
153 ROOT_DEV = Root_RAM0;
156 #ifdef CONFIG_ROOT_NFS
159 ROOT_DEV = Root_HDA1;
163 /* ************************************************************************ */
165 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
166 unsigned long r6, unsigned long r7)
168 /* parse_bootinfo must always be called first */
169 parse_bootinfo(find_bootinfo());
172 * If we were passed in a board information, copy it into the
173 * residual data area.
176 memcpy((void *) __res, (void *) (r3 + KERNELBASE),
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);
186 #if defined(CONFIG_BLK_DEV_INITRD)
188 * If the init RAM disk has been configured in, and there's a valid
189 * starting address for it, set it up.
192 initrd_start = r4 + KERNELBASE;
193 initrd_end = r5 + KERNELBASE;
195 #endif /* CONFIG_BLK_DEV_INITRD */
197 /* Copy the kernel command line arguments to a safe place. */
200 *(char *) (r7 + KERNELBASE) = 0;
201 strcpy(cmd_line, (char *) (r6 + KERNELBASE));
204 identify_ppc_sys_by_id(mfspr(SPRN_SVR));
206 /* setup the PowerPC module struct */
207 ppc_md.setup_arch = sbc8560_setup_arch;
208 ppc_md.show_cpuinfo = sbc8560_show_cpuinfo;
210 ppc_md.init_IRQ = sbc8560_init_IRQ;
211 ppc_md.get_irq = openpic_get_irq;
213 ppc_md.restart = mpc85xx_restart;
214 ppc_md.power_off = mpc85xx_power_off;
215 ppc_md.halt = mpc85xx_halt;
217 ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
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;
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 */
232 ppc_md.progress("sbc8560_init(): exit", 0);