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;
49 mpc85xx_exclude_device(u_char bus, u_char devfn)
51 if (bus == 0 && PCI_SLOT(devfn) == 0)
52 return PCIBIOS_DEVICE_NOT_FOUND;
54 return PCIBIOS_SUCCESSFUL;
58 mpc85xx_pcibios_fixup(void)
60 struct pci_dev *dev = NULL;
63 pci_read_irq_line(dev);
65 #endif /* CONFIG_PCI */
69 static void cpm2_cascade(unsigned int irq, struct irq_desc *desc,
74 while ((cascade_irq = cpm2_get_irq(regs)) >= 0) {
75 generic_handle_irq(cascade_irq, regs);
80 #endif /* CONFIG_CPM2 */
82 void __init mpc85xx_ads_pic_init(void)
86 struct device_node *np = NULL;
91 np = of_find_node_by_type(np, "open-pic");
94 printk(KERN_ERR "Could not find open-pic node\n");
98 if(of_address_to_resource(np, 0, &r)) {
99 printk(KERN_ERR "Could not map mpic register space\n");
104 mpic = mpic_alloc(np, r.start,
105 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
107 BUG_ON(mpic == NULL);
110 mpic_assign_isu(mpic, 0, r.start + 0x10200);
111 mpic_assign_isu(mpic, 1, r.start + 0x10280);
112 mpic_assign_isu(mpic, 2, r.start + 0x10300);
113 mpic_assign_isu(mpic, 3, r.start + 0x10380);
114 mpic_assign_isu(mpic, 4, r.start + 0x10400);
115 mpic_assign_isu(mpic, 5, r.start + 0x10480);
116 mpic_assign_isu(mpic, 6, r.start + 0x10500);
117 mpic_assign_isu(mpic, 7, r.start + 0x10580);
119 /* Unused on this platform (leave room for 8548) */
120 mpic_assign_isu(mpic, 8, r.start + 0x10600);
121 mpic_assign_isu(mpic, 9, r.start + 0x10680);
122 mpic_assign_isu(mpic, 10, r.start + 0x10700);
123 mpic_assign_isu(mpic, 11, r.start + 0x10780);
125 /* External Interrupts */
126 mpic_assign_isu(mpic, 12, r.start + 0x10000);
127 mpic_assign_isu(mpic, 13, r.start + 0x10080);
128 mpic_assign_isu(mpic, 14, r.start + 0x10100);
134 np = of_find_node_by_type(NULL, "cpm-pic");
136 printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
139 irq = irq_of_parse_and_map(np, 0);
142 set_irq_chained_handler(irq, cpm2_cascade);
147 * Setup the architecture
150 void init_fcc_ioports(struct fs_platform_info *fpi)
152 struct io_port *io = cpm2_map(im_ioport);
153 int fcc_no = fs_get_fcc_index(fpi->fs_no);
159 tempval = in_be32(&io->iop_pdirb);
160 tempval &= ~PB2_DIRB0;
161 tempval |= PB2_DIRB1;
162 out_be32(&io->iop_pdirb, tempval);
164 tempval = in_be32(&io->iop_psorb);
165 tempval &= ~PB2_PSORB0;
166 tempval |= PB2_PSORB1;
167 out_be32(&io->iop_psorb, tempval);
169 tempval = in_be32(&io->iop_pparb);
170 tempval |= (PB2_DIRB0 | PB2_DIRB1);
171 out_be32(&io->iop_pparb, tempval);
173 target = CPM_CLK_FCC2;
176 tempval = in_be32(&io->iop_pdirb);
177 tempval &= ~PB3_DIRB0;
178 tempval |= PB3_DIRB1;
179 out_be32(&io->iop_pdirb, tempval);
181 tempval = in_be32(&io->iop_psorb);
182 tempval &= ~PB3_PSORB0;
183 tempval |= PB3_PSORB1;
184 out_be32(&io->iop_psorb, tempval);
186 tempval = in_be32(&io->iop_pparb);
187 tempval |= (PB3_DIRB0 | PB3_DIRB1);
188 out_be32(&io->iop_pparb, tempval);
190 tempval = in_be32(&io->iop_pdirc);
191 tempval |= PC3_DIRC1;
192 out_be32(&io->iop_pdirc, tempval);
194 tempval = in_be32(&io->iop_pparc);
195 tempval |= PC3_DIRC1;
196 out_be32(&io->iop_pparc, tempval);
198 target = CPM_CLK_FCC3;
201 printk(KERN_ERR "init_fcc_ioports: invalid FCC number\n");
205 /* Port C has clocks...... */
206 tempval = in_be32(&io->iop_psorc);
207 tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
208 out_be32(&io->iop_psorc, tempval);
210 tempval = in_be32(&io->iop_pdirc);
211 tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
212 out_be32(&io->iop_pdirc, tempval);
213 tempval = in_be32(&io->iop_pparc);
214 tempval |= (PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
215 out_be32(&io->iop_pparc, tempval);
219 /* Configure Serial Interface clock routing.
220 * First, clear FCC bits to zero,
221 * then set the ones we want.
223 cpm2_clk_setup(target, fpi->clk_rx, CPM_CLK_RX);
224 cpm2_clk_setup(target, fpi->clk_tx, CPM_CLK_TX);
228 static void __init mpc85xx_ads_setup_arch(void)
230 struct device_node *cpu;
232 struct device_node *np;
236 ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
238 cpu = of_find_node_by_type(NULL, "cpu");
240 const unsigned int *fp;
242 fp = get_property(cpu, "clock-frequency", NULL);
244 loops_per_jiffy = *fp / HZ;
246 loops_per_jiffy = 50000000 / HZ;
255 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
258 ppc_md.pcibios_fixup = mpc85xx_pcibios_fixup;
259 ppc_md.pci_exclude_device = mpc85xx_exclude_device;
262 #ifdef CONFIG_ROOT_NFS
265 ROOT_DEV = Root_HDA1;
269 void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
271 uint pvid, svid, phid1;
272 uint memsize = total_memory;
274 pvid = mfspr(SPRN_PVR);
275 svid = mfspr(SPRN_SVR);
277 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
278 seq_printf(m, "Machine\t\t: mpc85xx\n");
279 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
280 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
282 /* Display cpu Pll setting */
283 phid1 = mfspr(SPRN_HID1);
284 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
286 /* Display the amount of memory */
287 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
291 * Called very early, device-tree isn't unflattened
293 static int __init mpc85xx_ads_probe(void)
295 /* We always match for now, eventually we should look at the flat
296 dev tree to ensure this is the board we are suppose to run on
301 define_machine(mpc85xx_ads) {
302 .name = "MPC85xx ADS",
303 .probe = mpc85xx_ads_probe,
304 .setup_arch = mpc85xx_ads_setup_arch,
305 .init_IRQ = mpc85xx_ads_pic_init,
306 .show_cpuinfo = mpc85xx_ads_show_cpuinfo,
307 .get_irq = mpic_get_irq,
308 .restart = mpc85xx_restart,
309 .calibrate_decr = generic_calibrate_decr,
310 .progress = udbg_progress,