Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 1 | /* |
Holger Brunck | 93e2b95 | 2011-03-11 08:02:44 +0100 | [diff] [blame] | 2 | * Copyright 2008-2011 DENX Software Engineering GmbH |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 3 | * Author: Heiko Schocher <hs@denx.de> |
| 4 | * |
| 5 | * Description: |
| 6 | * Keymile KMETER1 board specific routines. |
| 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 | |
| 14 | #include <linux/stddef.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/init.h> |
| 17 | #include <linux/errno.h> |
| 18 | #include <linux/reboot.h> |
| 19 | #include <linux/pci.h> |
| 20 | #include <linux/kdev_t.h> |
| 21 | #include <linux/major.h> |
| 22 | #include <linux/console.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/seq_file.h> |
| 25 | #include <linux/root_dev.h> |
| 26 | #include <linux/initrd.h> |
| 27 | #include <linux/of_platform.h> |
| 28 | #include <linux/of_device.h> |
| 29 | |
| 30 | #include <asm/system.h> |
Arun Sharma | 6006349 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 31 | #include <linux/atomic.h> |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 32 | #include <asm/time.h> |
| 33 | #include <asm/io.h> |
| 34 | #include <asm/machdep.h> |
| 35 | #include <asm/ipic.h> |
| 36 | #include <asm/irq.h> |
| 37 | #include <asm/prom.h> |
| 38 | #include <asm/udbg.h> |
| 39 | #include <sysdev/fsl_soc.h> |
| 40 | #include <sysdev/fsl_pci.h> |
| 41 | #include <asm/qe.h> |
| 42 | #include <asm/qe_ic.h> |
| 43 | |
| 44 | #include "mpc83xx.h" |
| 45 | |
| 46 | #define SVR_REV(svr) (((svr) >> 0) & 0xFFFF) /* Revision field */ |
| 47 | /* ************************************************************************ |
| 48 | * |
| 49 | * Setup the architecture |
| 50 | * |
| 51 | */ |
Holger Brunck | 93e2b95 | 2011-03-11 08:02:44 +0100 | [diff] [blame] | 52 | static void __init mpc83xx_km_setup_arch(void) |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 53 | { |
Dmitry Eremin-Solenikov | bede480 | 2011-11-17 18:48:48 +0400 | [diff] [blame] | 54 | #ifdef CONFIG_QUICC_ENGINE |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 55 | struct device_node *np; |
Dmitry Eremin-Solenikov | bede480 | 2011-11-17 18:48:48 +0400 | [diff] [blame] | 56 | #endif |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 57 | |
| 58 | if (ppc_md.progress) |
Holger Brunck | 93e2b95 | 2011-03-11 08:02:44 +0100 | [diff] [blame] | 59 | ppc_md.progress("kmpbec83xx_setup_arch()", 0); |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 60 | |
Dmitry Eremin-Solenikov | bede480 | 2011-11-17 18:48:48 +0400 | [diff] [blame] | 61 | mpc83xx_setup_pci(); |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 62 | |
| 63 | #ifdef CONFIG_QUICC_ENGINE |
| 64 | qe_reset(); |
| 65 | |
| 66 | np = of_find_node_by_name(NULL, "par_io"); |
| 67 | if (np != NULL) { |
| 68 | par_io_init(np); |
| 69 | of_node_put(np); |
| 70 | |
Holger Brunck | 93e2b95 | 2011-03-11 08:02:44 +0100 | [diff] [blame] | 71 | for_each_node_by_name(np, "spi") |
| 72 | par_io_of_config(np); |
| 73 | |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 74 | for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) |
| 75 | par_io_of_config(np); |
| 76 | } |
| 77 | |
| 78 | np = of_find_compatible_node(NULL, "network", "ucc_geth"); |
| 79 | if (np != NULL) { |
| 80 | uint svid; |
| 81 | |
| 82 | /* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */ |
| 83 | svid = mfspr(SPRN_SVR); |
| 84 | if (SVR_REV(svid) == 0x0021) { |
| 85 | struct device_node *np_par; |
| 86 | struct resource res; |
| 87 | void __iomem *base; |
| 88 | int ret; |
| 89 | |
| 90 | np_par = of_find_node_by_name(NULL, "par_io"); |
| 91 | if (np_par == NULL) { |
| 92 | printk(KERN_WARNING "%s couldn;t find par_io node\n", |
| 93 | __func__); |
| 94 | return; |
| 95 | } |
| 96 | /* Map Parallel I/O ports registers */ |
| 97 | ret = of_address_to_resource(np_par, 0, &res); |
| 98 | if (ret) { |
| 99 | printk(KERN_WARNING "%s couldn;t map par_io registers\n", |
| 100 | __func__); |
| 101 | return; |
| 102 | } |
Joe Perches | 28f65c1 | 2011-06-09 09:13:32 -0700 | [diff] [blame] | 103 | base = ioremap(res.start, resource_size(&res)); |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 104 | |
| 105 | /* |
| 106 | * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2) |
| 107 | * IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1) |
| 108 | */ |
| 109 | setbits32((base + 0xa8), 0x0c003000); |
| 110 | |
| 111 | /* |
| 112 | * IMMR + 0x14AC[20:27] = 10101010 |
| 113 | * (data delay for both UCC's) |
| 114 | */ |
| 115 | clrsetbits_be32((base + 0xac), 0xff0, 0xaa0); |
| 116 | iounmap(base); |
| 117 | of_node_put(np_par); |
| 118 | } |
| 119 | of_node_put(np); |
| 120 | } |
| 121 | #endif /* CONFIG_QUICC_ENGINE */ |
| 122 | } |
| 123 | |
Dmitry Eremin-Solenikov | 7669d58 | 2011-11-17 18:48:47 +0400 | [diff] [blame] | 124 | machine_device_initcall(mpc83xx_km, mpc83xx_declare_of_platform_devices); |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 125 | |
Holger Brunck | 93e2b95 | 2011-03-11 08:02:44 +0100 | [diff] [blame] | 126 | /* list of the supported boards */ |
| 127 | static char *board[] __initdata = { |
| 128 | "Keymile,KMETER1", |
| 129 | "Keymile,kmpbec8321", |
| 130 | NULL |
| 131 | }; |
| 132 | |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 133 | /* |
| 134 | * Called very early, MMU is off, device-tree isn't unflattened |
| 135 | */ |
Holger Brunck | 93e2b95 | 2011-03-11 08:02:44 +0100 | [diff] [blame] | 136 | static int __init mpc83xx_km_probe(void) |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 137 | { |
Holger Brunck | 93e2b95 | 2011-03-11 08:02:44 +0100 | [diff] [blame] | 138 | unsigned long node = of_get_flat_dt_root(); |
| 139 | int i = 0; |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 140 | |
Holger Brunck | 93e2b95 | 2011-03-11 08:02:44 +0100 | [diff] [blame] | 141 | while (board[i]) { |
| 142 | if (of_flat_dt_is_compatible(node, board[i])) |
| 143 | break; |
| 144 | i++; |
| 145 | } |
| 146 | return (board[i] != NULL); |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 147 | } |
| 148 | |
Holger Brunck | 93e2b95 | 2011-03-11 08:02:44 +0100 | [diff] [blame] | 149 | define_machine(mpc83xx_km) { |
| 150 | .name = "mpc83xx-km-platform", |
| 151 | .probe = mpc83xx_km_probe, |
| 152 | .setup_arch = mpc83xx_km_setup_arch, |
Dmitry Eremin-Solenikov | d4fb5eb | 2011-07-22 23:55:42 +0400 | [diff] [blame] | 153 | .init_IRQ = mpc83xx_ipic_and_qe_init_IRQ, |
Heiko Schocher | 8159df7 | 2009-06-15 09:38:18 +0200 | [diff] [blame] | 154 | .get_irq = ipic_get_irq, |
| 155 | .restart = mpc83xx_restart, |
| 156 | .time_init = mpc83xx_time_init, |
| 157 | .calibrate_decr = generic_calibrate_decr, |
| 158 | .progress = udbg_progress, |
| 159 | }; |