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>
21 #include <asm/system.h>
23 #include <asm/machdep.h>
24 #include <asm/pci-bridge.h>
25 #include <asm/mpc85xx.h>
28 #include <mm/mmu_decl.h>
31 #include <sysdev/fsl_soc.h>
35 #include <linux/fs_enet_pd.h>
37 #include <sysdev/cpm2_pic.h>
38 #include <asm/fs_pd.h>
42 unsigned long isa_io_base = 0;
43 unsigned long isa_mem_base = 0;
47 static int mpc85xx_exclude_device(u_char bus, u_char devfn)
49 if (bus == 0 && PCI_SLOT(devfn) == 0)
50 return PCIBIOS_DEVICE_NOT_FOUND;
52 return PCIBIOS_SUCCESSFUL;
54 #endif /* CONFIG_PCI */
58 static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
62 while ((cascade_irq = cpm2_get_irq()) >= 0) {
63 generic_handle_irq(cascade_irq);
68 #endif /* CONFIG_CPM2 */
70 static void __init mpc85xx_ads_pic_init(void)
74 struct device_node *np = NULL;
79 np = of_find_node_by_type(np, "open-pic");
82 printk(KERN_ERR "Could not find open-pic node\n");
86 if(of_address_to_resource(np, 0, &r)) {
87 printk(KERN_ERR "Could not map mpic register space\n");
92 mpic = mpic_alloc(np, r.start,
93 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
98 mpic_assign_isu(mpic, 0, r.start + 0x10200);
99 mpic_assign_isu(mpic, 1, r.start + 0x10280);
100 mpic_assign_isu(mpic, 2, r.start + 0x10300);
101 mpic_assign_isu(mpic, 3, r.start + 0x10380);
102 mpic_assign_isu(mpic, 4, r.start + 0x10400);
103 mpic_assign_isu(mpic, 5, r.start + 0x10480);
104 mpic_assign_isu(mpic, 6, r.start + 0x10500);
105 mpic_assign_isu(mpic, 7, r.start + 0x10580);
107 /* Unused on this platform (leave room for 8548) */
108 mpic_assign_isu(mpic, 8, r.start + 0x10600);
109 mpic_assign_isu(mpic, 9, r.start + 0x10680);
110 mpic_assign_isu(mpic, 10, r.start + 0x10700);
111 mpic_assign_isu(mpic, 11, r.start + 0x10780);
113 /* External Interrupts */
114 mpic_assign_isu(mpic, 12, r.start + 0x10000);
115 mpic_assign_isu(mpic, 13, r.start + 0x10080);
116 mpic_assign_isu(mpic, 14, r.start + 0x10100);
122 np = of_find_node_by_type(NULL, "cpm-pic");
124 printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
127 irq = irq_of_parse_and_map(np, 0);
130 set_irq_chained_handler(irq, cpm2_cascade);
135 * Setup the architecture
138 void init_fcc_ioports(struct fs_platform_info *fpi)
140 struct io_port *io = cpm2_map(im_ioport);
141 int fcc_no = fs_get_fcc_index(fpi->fs_no);
147 tempval = in_be32(&io->iop_pdirb);
148 tempval &= ~PB2_DIRB0;
149 tempval |= PB2_DIRB1;
150 out_be32(&io->iop_pdirb, tempval);
152 tempval = in_be32(&io->iop_psorb);
153 tempval &= ~PB2_PSORB0;
154 tempval |= PB2_PSORB1;
155 out_be32(&io->iop_psorb, tempval);
157 tempval = in_be32(&io->iop_pparb);
158 tempval |= (PB2_DIRB0 | PB2_DIRB1);
159 out_be32(&io->iop_pparb, tempval);
161 target = CPM_CLK_FCC2;
164 tempval = in_be32(&io->iop_pdirb);
165 tempval &= ~PB3_DIRB0;
166 tempval |= PB3_DIRB1;
167 out_be32(&io->iop_pdirb, tempval);
169 tempval = in_be32(&io->iop_psorb);
170 tempval &= ~PB3_PSORB0;
171 tempval |= PB3_PSORB1;
172 out_be32(&io->iop_psorb, tempval);
174 tempval = in_be32(&io->iop_pparb);
175 tempval |= (PB3_DIRB0 | PB3_DIRB1);
176 out_be32(&io->iop_pparb, tempval);
178 tempval = in_be32(&io->iop_pdirc);
179 tempval |= PC3_DIRC1;
180 out_be32(&io->iop_pdirc, tempval);
182 tempval = in_be32(&io->iop_pparc);
183 tempval |= PC3_DIRC1;
184 out_be32(&io->iop_pparc, tempval);
186 target = CPM_CLK_FCC3;
189 printk(KERN_ERR "init_fcc_ioports: invalid FCC number\n");
193 /* Port C has clocks...... */
194 tempval = in_be32(&io->iop_psorc);
195 tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
196 out_be32(&io->iop_psorc, tempval);
198 tempval = in_be32(&io->iop_pdirc);
199 tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
200 out_be32(&io->iop_pdirc, tempval);
201 tempval = in_be32(&io->iop_pparc);
202 tempval |= (PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
203 out_be32(&io->iop_pparc, tempval);
207 /* Configure Serial Interface clock routing.
208 * First, clear FCC bits to zero,
209 * then set the ones we want.
211 cpm2_clk_setup(target, fpi->clk_rx, CPM_CLK_RX);
212 cpm2_clk_setup(target, fpi->clk_tx, CPM_CLK_TX);
216 static void __init mpc85xx_ads_setup_arch(void)
218 struct device_node *cpu;
220 struct device_node *np;
224 ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
226 cpu = of_find_node_by_type(NULL, "cpu");
228 const unsigned int *fp;
230 fp = get_property(cpu, "clock-frequency", NULL);
232 loops_per_jiffy = *fp / HZ;
234 loops_per_jiffy = 50000000 / HZ;
243 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
245 ppc_md.pci_exclude_device = mpc85xx_exclude_device;
249 static void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
251 uint pvid, svid, phid1;
252 uint memsize = total_memory;
254 pvid = mfspr(SPRN_PVR);
255 svid = mfspr(SPRN_SVR);
257 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
258 seq_printf(m, "Machine\t\t: mpc85xx\n");
259 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
260 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
262 /* Display cpu Pll setting */
263 phid1 = mfspr(SPRN_HID1);
264 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
266 /* Display the amount of memory */
267 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
271 * Called very early, device-tree isn't unflattened
273 static int __init mpc85xx_ads_probe(void)
275 unsigned long root = of_get_flat_dt_root();
277 return of_flat_dt_is_compatible(root, "MPC85xxADS");
280 define_machine(mpc85xx_ads) {
281 .name = "MPC85xx ADS",
282 .probe = mpc85xx_ads_probe,
283 .setup_arch = mpc85xx_ads_setup_arch,
284 .init_IRQ = mpc85xx_ads_pic_init,
285 .show_cpuinfo = mpc85xx_ads_show_cpuinfo,
286 .get_irq = mpic_get_irq,
287 .restart = mpc85xx_restart,
288 .calibrate_decr = generic_calibrate_decr,
289 .progress = udbg_progress,