Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2000-2002 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | * |
| 5 | * (C) Copyright 2002 (440 port) |
| 6 | * Scott McNutt, Artesyn Communication Producs, smcnutt@artsyncp.com |
| 7 | * |
| 8 | * (C) Copyright 2003 Motorola Inc. (MPC85xx port) |
| 9 | * Xianghua Xiao (X.Xiao@motorola.com) |
| 10 | * |
Jon Loeliger | 11c9958 | 2007-08-02 14:42:20 -0500 | [diff] [blame] | 11 | * (C) Copyright 2004, 2007 Freescale Semiconductor. (MPC86xx Port) |
Jon Loeliger | 8827a73 | 2006-05-31 13:55:35 -0500 | [diff] [blame] | 12 | * Jeff Brown |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 13 | * Srikanth Srinivasan (srikanth.srinivasan@freescale.com) |
| 14 | * |
| 15 | * See file CREDITS for list of people who contributed to this |
| 16 | * project. |
| 17 | * |
| 18 | * This program is free software; you can redistribute it and/or |
| 19 | * modify it under the terms of the GNU General Public License as |
| 20 | * published by the Free Software Foundation; either version 2 of |
| 21 | * the License, or (at your option) any later version. |
| 22 | * |
| 23 | * This program is distributed in the hope that it will be useful, |
| 24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 26 | * GNU General Public License for more details. |
| 27 | * |
| 28 | * You should have received a copy of the GNU General Public License |
| 29 | * along with this program; if not, write to the Free Software |
| 30 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 31 | * MA 02111-1307 USA |
| 32 | */ |
| 33 | |
| 34 | #include <common.h> |
| 35 | #include <mpc86xx.h> |
| 36 | #include <command.h> |
| 37 | #include <asm/processor.h> |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 38 | |
Wolfgang Denk | 4d5a8e3 | 2007-08-02 00:48:45 +0200 | [diff] [blame] | 39 | int interrupt_init_cpu(unsigned long *decrementer_count) |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 40 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 41 | volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR; |
Kumar Gala | bc1a0b4 | 2008-08-19 15:05:34 -0500 | [diff] [blame] | 42 | volatile ccsr_pic_t *pic = &immr->im_pic; |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 43 | |
Kumar Gala | bc1a0b4 | 2008-08-19 15:05:34 -0500 | [diff] [blame] | 44 | pic->gcr = MPC86xx_PICGCR_RST; |
| 45 | while (pic->gcr & MPC86xx_PICGCR_RST) |
| 46 | ; |
| 47 | pic->gcr = MPC86xx_PICGCR_MODE; |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 48 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 49 | *decrementer_count = get_tbclk() / CONFIG_SYS_HZ; |
Wolfgang Denk | 4d5a8e3 | 2007-08-02 00:48:45 +0200 | [diff] [blame] | 50 | debug("interrupt init: tbclk() = %d MHz, decrementer_count = %ld\n", |
Jon Loeliger | a129544 | 2006-08-22 12:06:18 -0500 | [diff] [blame] | 51 | (get_tbclk() / 1000000), |
Kumar Gala | bc1a0b4 | 2008-08-19 15:05:34 -0500 | [diff] [blame] | 52 | *decrementer_count); |
Jon Loeliger | 465b9d8 | 2006-04-27 10:15:16 -0500 | [diff] [blame] | 53 | |
Jon Loeliger | 11c9958 | 2007-08-02 14:42:20 -0500 | [diff] [blame] | 54 | #ifdef CONFIG_INTERRUPTS |
Jon Loeliger | 11c9958 | 2007-08-02 14:42:20 -0500 | [diff] [blame] | 55 | |
| 56 | pic->iivpr1 = 0x810001; /* 50220 enable mcm interrupts */ |
| 57 | debug("iivpr1@%x = %x\n", &pic->iivpr1, pic->iivpr1); |
| 58 | |
| 59 | pic->iivpr2 = 0x810002; /* 50240 enable ddr interrupts */ |
| 60 | debug("iivpr2@%x = %x\n", &pic->iivpr2, pic->iivpr2); |
| 61 | |
| 62 | pic->iivpr3 = 0x810003; /* 50260 enable lbc interrupts */ |
| 63 | debug("iivpr3@%x = %x\n", &pic->iivpr3, pic->iivpr3); |
| 64 | |
| 65 | #if defined(CONFIG_PCI1) || defined(CONFIG_PCIE1) |
| 66 | pic->iivpr8 = 0x810008; /* enable pcie1 interrupts */ |
| 67 | debug("iivpr8@%x = %x\n", &pic->iivpr8, pic->iivpr8); |
| 68 | #endif |
| 69 | #if defined(CONFIG_PCI2) || defined(CONFIG_PCIE2) |
| 70 | pic->iivpr9 = 0x810009; /* enable pcie2 interrupts */ |
| 71 | debug("iivpr9@%x = %x\n", &pic->iivpr9, pic->iivpr9); |
| 72 | #endif |
| 73 | |
| 74 | pic->ctpr = 0; /* 40080 clear current task priority register */ |
| 75 | #endif |
| 76 | |
Jon Loeliger | 465b9d8 | 2006-04-27 10:15:16 -0500 | [diff] [blame] | 77 | return 0; |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 78 | } |
| 79 | |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 80 | /* |
| 81 | * timer_interrupt - gets called when the decrementer overflows, |
| 82 | * with interrupts disabled. |
| 83 | * Trivial implementation - no need to be really accurate. |
| 84 | */ |
Jon Loeliger | a129544 | 2006-08-22 12:06:18 -0500 | [diff] [blame] | 85 | void timer_interrupt_cpu(struct pt_regs *regs) |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 86 | { |
| 87 | /* nothing to do here */ |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 88 | } |
| 89 | |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 90 | /* |
| 91 | * Install and free a interrupt handler. Not implemented yet. |
| 92 | */ |
Jon Loeliger | a129544 | 2006-08-22 12:06:18 -0500 | [diff] [blame] | 93 | void irq_install_handler(int vec, interrupt_handler_t *handler, void *arg) |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 94 | { |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 95 | } |
| 96 | |
Jon Loeliger | a129544 | 2006-08-22 12:06:18 -0500 | [diff] [blame] | 97 | void irq_free_handler(int vec) |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 98 | { |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 99 | } |
| 100 | |
Jon Loeliger | 8827a73 | 2006-05-31 13:55:35 -0500 | [diff] [blame] | 101 | /* |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 102 | * irqinfo - print information about PCI devices,not implemented. |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 103 | */ |
Wolfgang Denk | 6262d021 | 2010-06-28 22:00:46 +0200 | [diff] [blame^] | 104 | int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 105 | { |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 106 | return 0; |
| 107 | } |
| 108 | |
| 109 | /* |
| 110 | * Handle external interrupts |
| 111 | */ |
Jon Loeliger | a129544 | 2006-08-22 12:06:18 -0500 | [diff] [blame] | 112 | void external_interrupt(struct pt_regs *regs) |
Jon Loeliger | 5c8aa97 | 2006-04-26 17:58:56 -0500 | [diff] [blame] | 113 | { |
| 114 | puts("external_interrupt (oops!)\n"); |
| 115 | } |