2 * MPC85xx setup and early boot code plus other random bits.
4 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
6 * Copyright 2005 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/pci.h>
17 #include <linux/kdev_t.h>
18 #include <linux/delay.h>
19 #include <linux/seq_file.h>
20 #include <linux/root_dev.h>
22 #include <asm/system.h>
24 #include <asm/machdep.h>
25 #include <asm/pci-bridge.h>
26 #include <asm/mpc85xx.h>
29 #include <mm/mmu_decl.h>
32 #include <sysdev/fsl_soc.h>
36 #include <linux/fs_enet_pd.h>
38 #include <sysdev/cpm2_pic.h>
39 #include <asm/fs_pd.h>
43 unsigned long isa_io_base = 0;
44 unsigned long isa_mem_base = 0;
48 static int mpc85xx_exclude_device(u_char bus, u_char devfn)
50 if (bus == 0 && PCI_SLOT(devfn) == 0)
51 return PCIBIOS_DEVICE_NOT_FOUND;
53 return PCIBIOS_SUCCESSFUL;
55 #endif /* CONFIG_PCI */
59 static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
63 while ((cascade_irq = cpm2_get_irq()) >= 0) {
64 generic_handle_irq(cascade_irq);
69 #endif /* CONFIG_CPM2 */
71 static void __init mpc85xx_ads_pic_init(void)
75 struct device_node *np = NULL;
80 np = of_find_node_by_type(np, "open-pic");
83 printk(KERN_ERR "Could not find open-pic node\n");
87 if(of_address_to_resource(np, 0, &r)) {
88 printk(KERN_ERR "Could not map mpic register space\n");
93 mpic = mpic_alloc(np, r.start,
94 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
99 mpic_assign_isu(mpic, 0, r.start + 0x10200);
100 mpic_assign_isu(mpic, 1, r.start + 0x10280);
101 mpic_assign_isu(mpic, 2, r.start + 0x10300);
102 mpic_assign_isu(mpic, 3, r.start + 0x10380);
103 mpic_assign_isu(mpic, 4, r.start + 0x10400);
104 mpic_assign_isu(mpic, 5, r.start + 0x10480);
105 mpic_assign_isu(mpic, 6, r.start + 0x10500);
106 mpic_assign_isu(mpic, 7, r.start + 0x10580);
108 /* Unused on this platform (leave room for 8548) */
109 mpic_assign_isu(mpic, 8, r.start + 0x10600);
110 mpic_assign_isu(mpic, 9, r.start + 0x10680);
111 mpic_assign_isu(mpic, 10, r.start + 0x10700);
112 mpic_assign_isu(mpic, 11, r.start + 0x10780);
114 /* External Interrupts */
115 mpic_assign_isu(mpic, 12, r.start + 0x10000);
116 mpic_assign_isu(mpic, 13, r.start + 0x10080);
117 mpic_assign_isu(mpic, 14, r.start + 0x10100);
123 np = of_find_node_by_type(NULL, "cpm-pic");
125 printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
128 irq = irq_of_parse_and_map(np, 0);
131 set_irq_chained_handler(irq, cpm2_cascade);
136 * Setup the architecture
139 void init_fcc_ioports(struct fs_platform_info *fpi)
141 struct io_port *io = cpm2_map(im_ioport);
142 int fcc_no = fs_get_fcc_index(fpi->fs_no);
148 tempval = in_be32(&io->iop_pdirb);
149 tempval &= ~PB2_DIRB0;
150 tempval |= PB2_DIRB1;
151 out_be32(&io->iop_pdirb, tempval);
153 tempval = in_be32(&io->iop_psorb);
154 tempval &= ~PB2_PSORB0;
155 tempval |= PB2_PSORB1;
156 out_be32(&io->iop_psorb, tempval);
158 tempval = in_be32(&io->iop_pparb);
159 tempval |= (PB2_DIRB0 | PB2_DIRB1);
160 out_be32(&io->iop_pparb, tempval);
162 target = CPM_CLK_FCC2;
165 tempval = in_be32(&io->iop_pdirb);
166 tempval &= ~PB3_DIRB0;
167 tempval |= PB3_DIRB1;
168 out_be32(&io->iop_pdirb, tempval);
170 tempval = in_be32(&io->iop_psorb);
171 tempval &= ~PB3_PSORB0;
172 tempval |= PB3_PSORB1;
173 out_be32(&io->iop_psorb, tempval);
175 tempval = in_be32(&io->iop_pparb);
176 tempval |= (PB3_DIRB0 | PB3_DIRB1);
177 out_be32(&io->iop_pparb, tempval);
179 tempval = in_be32(&io->iop_pdirc);
180 tempval |= PC3_DIRC1;
181 out_be32(&io->iop_pdirc, tempval);
183 tempval = in_be32(&io->iop_pparc);
184 tempval |= PC3_DIRC1;
185 out_be32(&io->iop_pparc, tempval);
187 target = CPM_CLK_FCC3;
190 printk(KERN_ERR "init_fcc_ioports: invalid FCC number\n");
194 /* Port C has clocks...... */
195 tempval = in_be32(&io->iop_psorc);
196 tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
197 out_be32(&io->iop_psorc, tempval);
199 tempval = in_be32(&io->iop_pdirc);
200 tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
201 out_be32(&io->iop_pdirc, tempval);
202 tempval = in_be32(&io->iop_pparc);
203 tempval |= (PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
204 out_be32(&io->iop_pparc, tempval);
208 /* Configure Serial Interface clock routing.
209 * First, clear FCC bits to zero,
210 * then set the ones we want.
212 cpm2_clk_setup(target, fpi->clk_rx, CPM_CLK_RX);
213 cpm2_clk_setup(target, fpi->clk_tx, CPM_CLK_TX);
217 static void __init mpc85xx_ads_setup_arch(void)
219 struct device_node *cpu;
221 struct device_node *np;
225 ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
227 cpu = of_find_node_by_type(NULL, "cpu");
229 const unsigned int *fp;
231 fp = get_property(cpu, "clock-frequency", NULL);
233 loops_per_jiffy = *fp / HZ;
235 loops_per_jiffy = 50000000 / HZ;
244 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
246 ppc_md.pci_exclude_device = mpc85xx_exclude_device;
249 #ifdef CONFIG_ROOT_NFS
252 ROOT_DEV = Root_HDA1;
256 static void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
258 uint pvid, svid, phid1;
259 uint memsize = total_memory;
261 pvid = mfspr(SPRN_PVR);
262 svid = mfspr(SPRN_SVR);
264 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
265 seq_printf(m, "Machine\t\t: mpc85xx\n");
266 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
267 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
269 /* Display cpu Pll setting */
270 phid1 = mfspr(SPRN_HID1);
271 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
273 /* Display the amount of memory */
274 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
278 * Called very early, device-tree isn't unflattened
280 static int __init mpc85xx_ads_probe(void)
282 /* We always match for now, eventually we should look at the flat
283 dev tree to ensure this is the board we are suppose to run on
288 define_machine(mpc85xx_ads) {
289 .name = "MPC85xx ADS",
290 .probe = mpc85xx_ads_probe,
291 .setup_arch = mpc85xx_ads_setup_arch,
292 .init_IRQ = mpc85xx_ads_pic_init,
293 .show_cpuinfo = mpc85xx_ads_show_cpuinfo,
294 .get_irq = mpic_get_irq,
295 .restart = mpc85xx_restart,
296 .calibrate_decr = generic_calibrate_decr,
297 .progress = udbg_progress,