Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 1 | /* |
| 2 | * MPC85xx setup and early boot code plus other random bits. |
| 3 | * |
| 4 | * Maintained by Kumar Gala (see MAINTAINERS for contact information) |
| 5 | * |
| 6 | * Copyright 2005 Freescale Semiconductor Inc. |
| 7 | * |
| 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. |
| 12 | */ |
| 13 | |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 14 | #include <linux/stddef.h> |
| 15 | #include <linux/kernel.h> |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 16 | #include <linux/pci.h> |
| 17 | #include <linux/kdev_t.h> |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 18 | #include <linux/delay.h> |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 19 | #include <linux/seq_file.h> |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 20 | |
| 21 | #include <asm/system.h> |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 22 | #include <asm/time.h> |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 23 | #include <asm/machdep.h> |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 24 | #include <asm/pci-bridge.h> |
| 25 | #include <asm/mpc85xx.h> |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 26 | #include <asm/prom.h> |
| 27 | #include <asm/mpic.h> |
| 28 | #include <mm/mmu_decl.h> |
| 29 | #include <asm/udbg.h> |
| 30 | |
| 31 | #include <sysdev/fsl_soc.h> |
Roy Zang | 3f6c5da | 2007-07-10 18:47:06 +0800 | [diff] [blame] | 32 | #include <sysdev/fsl_pci.h> |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 33 | #include "mpc85xx.h" |
| 34 | |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 35 | #ifdef CONFIG_CPM2 |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 36 | #include <linux/fs_enet_pd.h> |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 37 | #include <asm/cpm2.h> |
| 38 | #include <sysdev/cpm2_pic.h> |
| 39 | #include <asm/fs_pd.h> |
| 40 | #endif |
| 41 | |
Andy Fleming | 8080d54 | 2006-02-10 17:01:06 -0600 | [diff] [blame] | 42 | #ifdef CONFIG_PCI |
Kumar Gala | 7d52c7b | 2007-06-22 00:23:57 -0500 | [diff] [blame] | 43 | static int mpc85xx_exclude_device(struct pci_controller *hose, |
| 44 | u_char bus, u_char devfn) |
Andy Fleming | 8080d54 | 2006-02-10 17:01:06 -0600 | [diff] [blame] | 45 | { |
| 46 | if (bus == 0 && PCI_SLOT(devfn) == 0) |
| 47 | return PCIBIOS_DEVICE_NOT_FOUND; |
| 48 | else |
| 49 | return PCIBIOS_SUCCESSFUL; |
| 50 | } |
Andy Fleming | 8080d54 | 2006-02-10 17:01:06 -0600 | [diff] [blame] | 51 | #endif /* CONFIG_PCI */ |
| 52 | |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 53 | #ifdef CONFIG_CPM2 |
| 54 | |
Olaf Hering | 35a84c2 | 2006-10-07 22:08:26 +1000 | [diff] [blame] | 55 | static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 56 | { |
| 57 | int cascade_irq; |
| 58 | |
Olaf Hering | 35a84c2 | 2006-10-07 22:08:26 +1000 | [diff] [blame] | 59 | while ((cascade_irq = cpm2_get_irq()) >= 0) { |
Olof Johansson | 49f19ce | 2006-10-05 20:31:10 -0500 | [diff] [blame] | 60 | generic_handle_irq(cascade_irq); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 61 | } |
| 62 | desc->chip->eoi(irq); |
| 63 | } |
| 64 | |
| 65 | #endif /* CONFIG_CPM2 */ |
Andy Fleming | 8080d54 | 2006-02-10 17:01:06 -0600 | [diff] [blame] | 66 | |
Kumar Gala | 27630be | 2007-02-09 09:30:45 -0600 | [diff] [blame] | 67 | static void __init mpc85xx_ads_pic_init(void) |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 68 | { |
Andy Fleming | 4c86cd9 | 2006-08-18 18:03:08 -0500 | [diff] [blame] | 69 | struct mpic *mpic; |
| 70 | struct resource r; |
| 71 | struct device_node *np = NULL; |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 72 | #ifdef CONFIG_CPM2 |
| 73 | int irq; |
| 74 | #endif |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 75 | |
Andy Fleming | 4c86cd9 | 2006-08-18 18:03:08 -0500 | [diff] [blame] | 76 | np = of_find_node_by_type(np, "open-pic"); |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 77 | |
Andy Fleming | 4c86cd9 | 2006-08-18 18:03:08 -0500 | [diff] [blame] | 78 | if (np == NULL) { |
| 79 | printk(KERN_ERR "Could not find open-pic node\n"); |
| 80 | return; |
| 81 | } |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 82 | |
Andy Fleming | 4c86cd9 | 2006-08-18 18:03:08 -0500 | [diff] [blame] | 83 | if(of_address_to_resource(np, 0, &r)) { |
| 84 | printk(KERN_ERR "Could not map mpic register space\n"); |
| 85 | of_node_put(np); |
| 86 | return; |
| 87 | } |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 88 | |
Andy Fleming | 4c86cd9 | 2006-08-18 18:03:08 -0500 | [diff] [blame] | 89 | mpic = mpic_alloc(np, r.start, |
| 90 | MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, |
Kumar Gala | b533f8a | 2007-07-03 02:35:35 -0500 | [diff] [blame] | 91 | 0, 256, " OpenPIC "); |
Andy Fleming | 4c86cd9 | 2006-08-18 18:03:08 -0500 | [diff] [blame] | 92 | BUG_ON(mpic == NULL); |
| 93 | of_node_put(np); |
| 94 | |
Andy Fleming | 4c86cd9 | 2006-08-18 18:03:08 -0500 | [diff] [blame] | 95 | mpic_init(mpic); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 96 | |
| 97 | #ifdef CONFIG_CPM2 |
| 98 | /* Setup CPM2 PIC */ |
| 99 | np = of_find_node_by_type(NULL, "cpm-pic"); |
| 100 | if (np == NULL) { |
| 101 | printk(KERN_ERR "PIC init: can not find cpm-pic node\n"); |
| 102 | return; |
| 103 | } |
| 104 | irq = irq_of_parse_and_map(np, 0); |
| 105 | |
| 106 | cpm2_pic_init(np); |
| 107 | set_irq_chained_handler(irq, cpm2_cascade); |
| 108 | #endif |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 109 | } |
| 110 | |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 111 | /* |
| 112 | * Setup the architecture |
| 113 | */ |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 114 | #ifdef CONFIG_CPM2 |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 115 | void init_fcc_ioports(struct fs_platform_info *fpi) |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 116 | { |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 117 | struct io_port *io = cpm2_map(im_ioport); |
| 118 | int fcc_no = fs_get_fcc_index(fpi->fs_no); |
| 119 | int target; |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 120 | u32 tempval; |
| 121 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 122 | switch(fcc_no) { |
| 123 | case 1: |
| 124 | tempval = in_be32(&io->iop_pdirb); |
| 125 | tempval &= ~PB2_DIRB0; |
| 126 | tempval |= PB2_DIRB1; |
| 127 | out_be32(&io->iop_pdirb, tempval); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 128 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 129 | tempval = in_be32(&io->iop_psorb); |
| 130 | tempval &= ~PB2_PSORB0; |
| 131 | tempval |= PB2_PSORB1; |
| 132 | out_be32(&io->iop_psorb, tempval); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 133 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 134 | tempval = in_be32(&io->iop_pparb); |
| 135 | tempval |= (PB2_DIRB0 | PB2_DIRB1); |
| 136 | out_be32(&io->iop_pparb, tempval); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 137 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 138 | target = CPM_CLK_FCC2; |
| 139 | break; |
| 140 | case 2: |
| 141 | tempval = in_be32(&io->iop_pdirb); |
| 142 | tempval &= ~PB3_DIRB0; |
| 143 | tempval |= PB3_DIRB1; |
| 144 | out_be32(&io->iop_pdirb, tempval); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 145 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 146 | tempval = in_be32(&io->iop_psorb); |
| 147 | tempval &= ~PB3_PSORB0; |
| 148 | tempval |= PB3_PSORB1; |
| 149 | out_be32(&io->iop_psorb, tempval); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 150 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 151 | tempval = in_be32(&io->iop_pparb); |
| 152 | tempval |= (PB3_DIRB0 | PB3_DIRB1); |
| 153 | out_be32(&io->iop_pparb, tempval); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 154 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 155 | tempval = in_be32(&io->iop_pdirc); |
| 156 | tempval |= PC3_DIRC1; |
| 157 | out_be32(&io->iop_pdirc, tempval); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 158 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 159 | tempval = in_be32(&io->iop_pparc); |
| 160 | tempval |= PC3_DIRC1; |
| 161 | out_be32(&io->iop_pparc, tempval); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 162 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 163 | target = CPM_CLK_FCC3; |
| 164 | break; |
| 165 | default: |
| 166 | printk(KERN_ERR "init_fcc_ioports: invalid FCC number\n"); |
| 167 | return; |
| 168 | } |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 169 | |
| 170 | /* Port C has clocks...... */ |
| 171 | tempval = in_be32(&io->iop_psorc); |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 172 | tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8)); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 173 | out_be32(&io->iop_psorc, tempval); |
| 174 | |
| 175 | tempval = in_be32(&io->iop_pdirc); |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 176 | tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8)); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 177 | out_be32(&io->iop_pdirc, tempval); |
| 178 | tempval = in_be32(&io->iop_pparc); |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 179 | tempval |= (PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8)); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 180 | out_be32(&io->iop_pparc, tempval); |
| 181 | |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 182 | cpm2_unmap(io); |
| 183 | |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 184 | /* Configure Serial Interface clock routing. |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 185 | * First, clear FCC bits to zero, |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 186 | * then set the ones we want. |
| 187 | */ |
Vitaly Bordug | d3465c9 | 2006-09-21 22:38:05 +0400 | [diff] [blame] | 188 | cpm2_clk_setup(target, fpi->clk_rx, CPM_CLK_RX); |
| 189 | cpm2_clk_setup(target, fpi->clk_tx, CPM_CLK_TX); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 190 | } |
| 191 | #endif |
| 192 | |
Becky Bruce | fbc94e7 | 2006-02-07 21:29:42 -0600 | [diff] [blame] | 193 | static void __init mpc85xx_ads_setup_arch(void) |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 194 | { |
Andy Fleming | 4c86cd9 | 2006-08-18 18:03:08 -0500 | [diff] [blame] | 195 | #ifdef CONFIG_PCI |
Andy Fleming | 8080d54 | 2006-02-10 17:01:06 -0600 | [diff] [blame] | 196 | struct device_node *np; |
Andy Fleming | 4c86cd9 | 2006-08-18 18:03:08 -0500 | [diff] [blame] | 197 | #endif |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 198 | |
| 199 | if (ppc_md.progress) |
| 200 | ppc_md.progress("mpc85xx_ads_setup_arch()", 0); |
| 201 | |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 202 | #ifdef CONFIG_CPM2 |
| 203 | cpm2_reset(); |
Vitaly Bordug | 902f392 | 2006-09-21 22:31:26 +0400 | [diff] [blame] | 204 | #endif |
| 205 | |
Andy Fleming | 8080d54 | 2006-02-10 17:01:06 -0600 | [diff] [blame] | 206 | #ifdef CONFIG_PCI |
Kumar Gala | c9438af | 2007-10-04 00:28:43 -0500 | [diff] [blame^] | 207 | for_each_compatible_node(np, "pci", "fsl,mpc8540-pci") |
Roy Zang | 3f6c5da | 2007-07-10 18:47:06 +0800 | [diff] [blame] | 208 | fsl_add_bridge(np, 1); |
Kumar Gala | c9438af | 2007-10-04 00:28:43 -0500 | [diff] [blame^] | 209 | |
Andy Fleming | 8080d54 | 2006-02-10 17:01:06 -0600 | [diff] [blame] | 210 | ppc_md.pci_exclude_device = mpc85xx_exclude_device; |
| 211 | #endif |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 212 | } |
| 213 | |
Kumar Gala | 27630be | 2007-02-09 09:30:45 -0600 | [diff] [blame] | 214 | static void mpc85xx_ads_show_cpuinfo(struct seq_file *m) |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 215 | { |
| 216 | uint pvid, svid, phid1; |
| 217 | uint memsize = total_memory; |
| 218 | |
| 219 | pvid = mfspr(SPRN_PVR); |
| 220 | svid = mfspr(SPRN_SVR); |
| 221 | |
| 222 | seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n"); |
| 223 | seq_printf(m, "Machine\t\t: mpc85xx\n"); |
| 224 | seq_printf(m, "PVR\t\t: 0x%x\n", pvid); |
| 225 | seq_printf(m, "SVR\t\t: 0x%x\n", svid); |
| 226 | |
| 227 | /* Display cpu Pll setting */ |
| 228 | phid1 = mfspr(SPRN_HID1); |
| 229 | seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); |
| 230 | |
| 231 | /* Display the amount of memory */ |
| 232 | seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024)); |
| 233 | } |
| 234 | |
Kumar Gala | 72d2c3e | 2006-03-30 23:39:57 -0600 | [diff] [blame] | 235 | /* |
| 236 | * Called very early, device-tree isn't unflattened |
| 237 | */ |
| 238 | static int __init mpc85xx_ads_probe(void) |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 239 | { |
Kumar Gala | 6936c62 | 2007-02-17 16:19:34 -0600 | [diff] [blame] | 240 | unsigned long root = of_get_flat_dt_root(); |
| 241 | |
| 242 | return of_flat_dt_is_compatible(root, "MPC85xxADS"); |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 243 | } |
Kumar Gala | 72d2c3e | 2006-03-30 23:39:57 -0600 | [diff] [blame] | 244 | |
| 245 | define_machine(mpc85xx_ads) { |
| 246 | .name = "MPC85xx ADS", |
| 247 | .probe = mpc85xx_ads_probe, |
| 248 | .setup_arch = mpc85xx_ads_setup_arch, |
| 249 | .init_IRQ = mpc85xx_ads_pic_init, |
| 250 | .show_cpuinfo = mpc85xx_ads_show_cpuinfo, |
| 251 | .get_irq = mpic_get_irq, |
| 252 | .restart = mpc85xx_restart, |
| 253 | .calibrate_decr = generic_calibrate_decr, |
| 254 | .progress = udbg_progress, |
| 255 | }; |