1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2000-2002
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * (C) Copyright 2002 (440 port)
7 * Scott McNutt, Artesyn Communication Producs, smcnutt@artsyncp.com
9 * (C) Copyright 2003 Motorola Inc. (MPC85xx port)
10 * Xianghua Xiao (X.Xiao@motorola.com)
19 #include <asm/processor.h>
25 void interrupt_init_cpu(unsigned *decrementer_count)
27 ccsr_pic_t __iomem *pic = (void *)CONFIG_SYS_MPC8xxx_PIC_ADDR;
31 * The POST word is stored in the PIC's TFRR register which gets
32 * cleared when the PIC is reset. Save it off so we can restore it
35 ulong post_word = post_word_load();
38 out_be32(&pic->gcr, MPC85xx_PICGCR_RST);
39 while (in_be32(&pic->gcr) & MPC85xx_PICGCR_RST)
41 out_be32(&pic->gcr, MPC85xx_PICGCR_M);
44 *decrementer_count = get_tbclk() / CONFIG_SYS_HZ;
46 /* PIE is same as DIE, dec interrupt enable */
47 mtspr(SPRN_TCR, mfspr(SPRN_TCR) | TCR_PIE);
49 #ifdef CONFIG_INTERRUPTS
50 pic->iivpr1 = 0x810001; /* 50220 enable ecm interrupts */
51 debug("iivpr1@%x = %x\n", (uint)&pic->iivpr1, pic->iivpr1);
53 pic->iivpr2 = 0x810002; /* 50240 enable ddr interrupts */
54 debug("iivpr2@%x = %x\n", (uint)&pic->iivpr2, pic->iivpr2);
56 pic->iivpr3 = 0x810003; /* 50260 enable lbc interrupts */
57 debug("iivpr3@%x = %x\n", (uint)&pic->iivpr3, pic->iivpr3);
60 pic->iivpr8 = 0x810008; /* enable pci1 interrupts */
61 debug("iivpr8@%x = %x\n", (uint)&pic->iivpr8, pic->iivpr8);
63 #if defined(CONFIG_PCI2) || defined(CONFIG_PCIE2)
64 pic->iivpr9 = 0x810009; /* enable pci1 interrupts */
65 debug("iivpr9@%x = %x\n", (uint)&pic->iivpr9, pic->iivpr9);
68 pic->iivpr10 = 0x81000a; /* enable pcie1 interrupts */
69 debug("iivpr10@%x = %x\n", (uint)&pic->iivpr10, pic->iivpr10);
72 pic->iivpr11 = 0x81000b; /* enable pcie3 interrupts */
73 debug("iivpr11@%x = %x\n", (uint)&pic->iivpr11, pic->iivpr11);
76 pic->ctpr=0; /* 40080 clear current task priority register */
80 post_word_store(post_word);
84 /* Install and free a interrupt handler. Not implemented yet. */
87 irq_install_handler(int vec, interrupt_handler_t *handler, void *arg)
93 irq_free_handler(int vec)
98 void timer_interrupt_cpu(struct pt_regs *regs)
100 /* PIS is same as DIS, dec interrupt status */
101 mtspr(SPRN_TSR, TSR_PIS);
104 #if defined(CONFIG_CMD_IRQ)
105 /* irqinfo - print information about PCI devices,not implemented. */
106 int do_irqinfo(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])