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 static int mpc85xx_exclude_device(struct pci_controller *hose,
43 u_char bus, u_char devfn)
45 if (bus == 0 && PCI_SLOT(devfn) == 0)
46 return PCIBIOS_DEVICE_NOT_FOUND;
48 return PCIBIOS_SUCCESSFUL;
50 #endif /* CONFIG_PCI */
54 static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
58 while ((cascade_irq = cpm2_get_irq()) >= 0) {
59 generic_handle_irq(cascade_irq);
64 #endif /* CONFIG_CPM2 */
66 static void __init mpc85xx_ads_pic_init(void)
70 struct device_node *np = NULL;
75 np = of_find_node_by_type(np, "open-pic");
78 printk(KERN_ERR "Could not find open-pic node\n");
82 if(of_address_to_resource(np, 0, &r)) {
83 printk(KERN_ERR "Could not map mpic register space\n");
88 mpic = mpic_alloc(np, r.start,
89 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
94 mpic_assign_isu(mpic, 0, r.start + 0x10200);
95 mpic_assign_isu(mpic, 1, r.start + 0x10280);
96 mpic_assign_isu(mpic, 2, r.start + 0x10300);
97 mpic_assign_isu(mpic, 3, r.start + 0x10380);
98 mpic_assign_isu(mpic, 4, r.start + 0x10400);
99 mpic_assign_isu(mpic, 5, r.start + 0x10480);
100 mpic_assign_isu(mpic, 6, r.start + 0x10500);
101 mpic_assign_isu(mpic, 7, r.start + 0x10580);
103 /* Unused on this platform (leave room for 8548) */
104 mpic_assign_isu(mpic, 8, r.start + 0x10600);
105 mpic_assign_isu(mpic, 9, r.start + 0x10680);
106 mpic_assign_isu(mpic, 10, r.start + 0x10700);
107 mpic_assign_isu(mpic, 11, r.start + 0x10780);
109 /* External Interrupts */
110 mpic_assign_isu(mpic, 12, r.start + 0x10000);
111 mpic_assign_isu(mpic, 13, r.start + 0x10080);
112 mpic_assign_isu(mpic, 14, r.start + 0x10100);
118 np = of_find_node_by_type(NULL, "cpm-pic");
120 printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
123 irq = irq_of_parse_and_map(np, 0);
126 set_irq_chained_handler(irq, cpm2_cascade);
131 * Setup the architecture
134 void init_fcc_ioports(struct fs_platform_info *fpi)
136 struct io_port *io = cpm2_map(im_ioport);
137 int fcc_no = fs_get_fcc_index(fpi->fs_no);
143 tempval = in_be32(&io->iop_pdirb);
144 tempval &= ~PB2_DIRB0;
145 tempval |= PB2_DIRB1;
146 out_be32(&io->iop_pdirb, tempval);
148 tempval = in_be32(&io->iop_psorb);
149 tempval &= ~PB2_PSORB0;
150 tempval |= PB2_PSORB1;
151 out_be32(&io->iop_psorb, tempval);
153 tempval = in_be32(&io->iop_pparb);
154 tempval |= (PB2_DIRB0 | PB2_DIRB1);
155 out_be32(&io->iop_pparb, tempval);
157 target = CPM_CLK_FCC2;
160 tempval = in_be32(&io->iop_pdirb);
161 tempval &= ~PB3_DIRB0;
162 tempval |= PB3_DIRB1;
163 out_be32(&io->iop_pdirb, tempval);
165 tempval = in_be32(&io->iop_psorb);
166 tempval &= ~PB3_PSORB0;
167 tempval |= PB3_PSORB1;
168 out_be32(&io->iop_psorb, tempval);
170 tempval = in_be32(&io->iop_pparb);
171 tempval |= (PB3_DIRB0 | PB3_DIRB1);
172 out_be32(&io->iop_pparb, tempval);
174 tempval = in_be32(&io->iop_pdirc);
175 tempval |= PC3_DIRC1;
176 out_be32(&io->iop_pdirc, tempval);
178 tempval = in_be32(&io->iop_pparc);
179 tempval |= PC3_DIRC1;
180 out_be32(&io->iop_pparc, tempval);
182 target = CPM_CLK_FCC3;
185 printk(KERN_ERR "init_fcc_ioports: invalid FCC number\n");
189 /* Port C has clocks...... */
190 tempval = in_be32(&io->iop_psorc);
191 tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
192 out_be32(&io->iop_psorc, tempval);
194 tempval = in_be32(&io->iop_pdirc);
195 tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
196 out_be32(&io->iop_pdirc, tempval);
197 tempval = in_be32(&io->iop_pparc);
198 tempval |= (PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
199 out_be32(&io->iop_pparc, tempval);
203 /* Configure Serial Interface clock routing.
204 * First, clear FCC bits to zero,
205 * then set the ones we want.
207 cpm2_clk_setup(target, fpi->clk_rx, CPM_CLK_RX);
208 cpm2_clk_setup(target, fpi->clk_tx, CPM_CLK_TX);
212 static void __init mpc85xx_ads_setup_arch(void)
214 struct device_node *cpu;
216 struct device_node *np;
220 ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
222 cpu = of_find_node_by_type(NULL, "cpu");
224 const unsigned int *fp;
226 fp = of_get_property(cpu, "clock-frequency", NULL);
228 loops_per_jiffy = *fp / HZ;
230 loops_per_jiffy = 50000000 / HZ;
239 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
240 mpc85xx_add_bridge(np);
241 ppc_md.pci_exclude_device = mpc85xx_exclude_device;
245 static void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
247 uint pvid, svid, phid1;
248 uint memsize = total_memory;
250 pvid = mfspr(SPRN_PVR);
251 svid = mfspr(SPRN_SVR);
253 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
254 seq_printf(m, "Machine\t\t: mpc85xx\n");
255 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
256 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
258 /* Display cpu Pll setting */
259 phid1 = mfspr(SPRN_HID1);
260 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
262 /* Display the amount of memory */
263 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
267 * Called very early, device-tree isn't unflattened
269 static int __init mpc85xx_ads_probe(void)
271 unsigned long root = of_get_flat_dt_root();
273 return of_flat_dt_is_compatible(root, "MPC85xxADS");
276 define_machine(mpc85xx_ads) {
277 .name = "MPC85xx ADS",
278 .probe = mpc85xx_ads_probe,
279 .setup_arch = mpc85xx_ads_setup_arch,
280 .init_IRQ = mpc85xx_ads_pic_init,
281 .show_cpuinfo = mpc85xx_ads_show_cpuinfo,
282 .get_irq = mpic_get_irq,
283 .restart = mpc85xx_restart,
284 .calibrate_decr = generic_calibrate_decr,
285 .progress = udbg_progress,