2 * Ocotea board specific routines
4 * Matt Porter <mporter@kernel.crashing.org>
6 * Copyright 2003-2005 MontaVista Software 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/config.h>
15 #include <linux/stddef.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/errno.h>
19 #include <linux/reboot.h>
20 #include <linux/pci.h>
21 #include <linux/kdev_t.h>
22 #include <linux/types.h>
23 #include <linux/major.h>
24 #include <linux/blkdev.h>
25 #include <linux/console.h>
26 #include <linux/delay.h>
27 #include <linux/ide.h>
28 #include <linux/initrd.h>
29 #include <linux/seq_file.h>
30 #include <linux/root_dev.h>
31 #include <linux/tty.h>
32 #include <linux/serial.h>
33 #include <linux/serial_core.h>
35 #include <asm/system.h>
36 #include <asm/pgtable.h>
40 #include <asm/machdep.h>
42 #include <asm/pci-bridge.h>
45 #include <asm/bootinfo.h>
46 #include <asm/ppc4xx_pic.h>
47 #include <asm/ppcboot.h>
48 #include <asm/tlbflush.h>
50 #include <syslib/gen550.h>
51 #include <syslib/ibm440gx_common.h>
55 static struct ibm44x_clocks clocks __initdata;
58 ocotea_calibrate_decr(void)
62 if (mfspr(SPRN_CCR1) & CCR1_TCS)
63 freq = OCOTEA_TMR_CLK;
67 ibm44x_calibrate_decr(freq);
71 ocotea_show_cpuinfo(struct seq_file *m)
73 seq_printf(m, "vendor\t\t: IBM\n");
74 seq_printf(m, "machine\t\t: PPC440GX EVB (Ocotea)\n");
75 ibm440gx_show_cpuinfo(m);
80 ocotea_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
82 static char pci_irq_table[][4] =
84 * PCI IDSEL/INTPIN->INTLINE
88 { 23, 23, 23, 23 }, /* IDSEL 1 - PCI Slot 0 */
89 { 24, 24, 24, 24 }, /* IDSEL 2 - PCI Slot 1 */
90 { 25, 25, 25, 25 }, /* IDSEL 3 - PCI Slot 2 */
91 { 26, 26, 26, 26 }, /* IDSEL 4 - PCI Slot 3 */
94 const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
95 return PCI_IRQ_TABLE_LOOKUP;
98 static void __init ocotea_set_emacdata(void)
101 struct ocp_func_emac_data *emacdata;
105 * Note: Current rev. board only operates in Group 4a
106 * mode, so we always set EMAC0-1 for SMII and EMAC2-3
107 * for RGMII (though these could run in RTBI just the same).
109 * The FPGA reg 3 information isn't even suitable for
110 * determining the phy_mode, so if the board becomes
111 * usable in !4a, it will be necessary to parse an environment
112 * variable from the firmware or similar to properly configure
113 * the phy_map/phy_mode.
115 /* Set phy_map, phy_mode, and mac_addr for each EMAC */
116 for (i=0; i<4; i++) {
117 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, i);
118 emacdata = def->additions;
120 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
121 emacdata->phy_mode = PHY_MODE_SMII;
124 emacdata->phy_map = 0x0000ffff; /* Skip 0x00-0x0f */
125 emacdata->phy_mode = PHY_MODE_RGMII;
128 memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
130 memcpy(emacdata->mac_addr, __res.bi_enet1addr, 6);
132 memcpy(emacdata->mac_addr, __res.bi_enet2addr, 6);
134 memcpy(emacdata->mac_addr, __res.bi_enet3addr, 6);
138 #define PCIX_READW(offset) \
139 (readw(pcix_reg_base+offset))
141 #define PCIX_WRITEW(value, offset) \
142 (writew(value, pcix_reg_base+offset))
144 #define PCIX_WRITEL(value, offset) \
145 (writel(value, pcix_reg_base+offset))
148 * FIXME: This is only here to "make it work". This will move
149 * to a ibm_pcix.c which will contain a generic IBM PCIX bridge
150 * configuration library. -Matt
153 ocotea_setup_pcix(void)
157 pcix_reg_base = ioremap64(PCIX0_REG_BASE, PCIX_REG_SIZE);
159 /* Enable PCIX0 I/O, Mem, and Busmaster cycles */
160 PCIX_WRITEW(PCIX_READW(PCIX0_COMMAND) | PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER, PCIX0_COMMAND);
162 /* Disable all windows */
163 PCIX_WRITEL(0, PCIX0_POM0SA);
164 PCIX_WRITEL(0, PCIX0_POM1SA);
165 PCIX_WRITEL(0, PCIX0_POM2SA);
166 PCIX_WRITEL(0, PCIX0_PIM0SA);
167 PCIX_WRITEL(0, PCIX0_PIM0SAH);
168 PCIX_WRITEL(0, PCIX0_PIM1SA);
169 PCIX_WRITEL(0, PCIX0_PIM2SA);
170 PCIX_WRITEL(0, PCIX0_PIM2SAH);
172 /* Setup 2GB PLB->PCI outbound mem window (3_8000_0000->0_8000_0000) */
173 PCIX_WRITEL(0x00000003, PCIX0_POM0LAH);
174 PCIX_WRITEL(0x80000000, PCIX0_POM0LAL);
175 PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
176 PCIX_WRITEL(0x80000000, PCIX0_POM0PCIAL);
177 PCIX_WRITEL(0x80000001, PCIX0_POM0SA);
179 /* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
180 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
181 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
182 PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
188 ocotea_setup_hose(void)
190 struct pci_controller *hose;
192 /* Configure windows on the PCI-X host bridge */
195 hose = pcibios_alloc_controller();
200 hose->first_busno = 0;
201 hose->last_busno = 0xff;
203 hose->pci_mem_offset = OCOTEA_PCI_MEM_OFFSET;
205 pci_init_resource(&hose->io_resource,
211 pci_init_resource(&hose->mem_resources[0],
212 OCOTEA_PCI_LOWER_MEM,
213 OCOTEA_PCI_UPPER_MEM,
217 hose->io_space.start = OCOTEA_PCI_LOWER_IO;
218 hose->io_space.end = OCOTEA_PCI_UPPER_IO;
219 hose->mem_space.start = OCOTEA_PCI_LOWER_MEM;
220 hose->mem_space.end = OCOTEA_PCI_UPPER_MEM;
221 hose->io_base_virt = ioremap64(OCOTEA_PCI_IO_BASE, OCOTEA_PCI_IO_SIZE);
222 isa_io_base = (unsigned long) hose->io_base_virt;
224 setup_indirect_pci(hose,
225 OCOTEA_PCI_CFGA_PLB32,
226 OCOTEA_PCI_CFGD_PLB32);
227 hose->set_cfg_type = 1;
229 hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
231 ppc_md.pci_swizzle = common_swizzle;
232 ppc_md.pci_map_irq = ocotea_map_irq;
239 ocotea_early_serial_map(void)
241 struct uart_port port;
243 /* Setup ioremapped serial port access */
244 memset(&port, 0, sizeof(port));
245 port.membase = ioremap64(PPC440GX_UART0_ADDR, 8);
246 port.irq = UART0_INT;
247 port.uartclk = clocks.uart0;
249 port.iotype = UPIO_MEM;
250 port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
253 if (early_serial_setup(&port) != 0) {
254 printk("Early serial init of port 0 failed\n");
257 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
258 /* Configure debug serial access */
259 gen550_init(0, &port);
261 /* Purge TLB entry added in head_44x.S for early serial access */
262 _tlbie(UART0_IO_BASE);
265 port.membase = ioremap64(PPC440GX_UART1_ADDR, 8);
266 port.irq = UART1_INT;
267 port.uartclk = clocks.uart1;
270 if (early_serial_setup(&port) != 0) {
271 printk("Early serial init of port 1 failed\n");
274 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
275 /* Configure debug serial access */
276 gen550_init(1, &port);
281 ocotea_setup_arch(void)
283 ocotea_set_emacdata();
285 ibm440gx_tah_enable();
288 * Determine various clocks.
289 * To be completely correct we should get SysClk
290 * from FPGA, because it can be changed by on-board switches
293 ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
294 ocp_sys_info.opb_bus_freq = clocks.opb;
296 /* Setup TODC access */
297 TODC_INIT(TODC_TYPE_DS1743,
300 ioremap64(OCOTEA_RTC_ADDR, OCOTEA_RTC_SIZE),
303 /* init to some ~sane value until calibrate_delay() runs */
304 loops_per_jiffy = 50000000/HZ;
306 /* Setup PCI host bridge */
309 #ifdef CONFIG_BLK_DEV_INITRD
311 ROOT_DEV = Root_RAM0;
314 #ifdef CONFIG_ROOT_NFS
317 ROOT_DEV = Root_HDA1;
320 ocotea_early_serial_map();
322 /* Identify the system */
323 printk("IBM Ocotea port (MontaVista Software, Inc. <source@mvista.com>)\n");
326 static void __init ocotea_init(void)
328 ibm440gx_l2c_setup(&clocks);
331 void __init platform_init(unsigned long r3, unsigned long r4,
332 unsigned long r5, unsigned long r6, unsigned long r7)
334 ibm44x_platform_init(r3, r4, r5, r6, r7);
336 ppc_md.setup_arch = ocotea_setup_arch;
337 ppc_md.show_cpuinfo = ocotea_show_cpuinfo;
338 ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
340 ppc_md.calibrate_decr = ocotea_calibrate_decr;
341 ppc_md.time_init = todc_time_init;
342 ppc_md.set_rtc_time = todc_set_rtc_time;
343 ppc_md.get_rtc_time = todc_get_rtc_time;
345 ppc_md.nvram_read_val = todc_direct_read_val;
346 ppc_md.nvram_write_val = todc_direct_write_val;
348 ppc_md.early_serial_map = ocotea_early_serial_map;
350 ppc_md.init = ocotea_init;