2 ppcskel - a Free Software replacement for the Nintendo/BroadOn IOS.
5 Copyright (C) 2008, 2009 Hector Martin "marcan" <marcan@marcansoft.com>
6 Copyright (C) 2008, 2009 Sven Peter <svenpeter@gmail.com>
7 Copyright (C) 2009 Andre Heider "dhewg" <dhewg@wiibrew.org>
9 # This code is licensed to you under the terms of the GNU GPL, version 2;
10 # see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
14 #include "hollywood.h"
16 #include "bootmii_ppc.h"
17 #include "usb/host/host.h"
19 void irq_initialize(void)
21 // clear flipper-pic (processor interface)
22 write32(BW_PI_IRQMASK, 0);
23 write32(BW_PI_IRQFLAG, 0xffffffff);
25 // clear hollywood-pic
26 write32(HW_PPCIRQMASK, 0);
27 write32(HW_PPCIRQFLAG, 0xffffffff);
32 * write32(HW_ARMIRQMASK+0x04, 0);
33 * write32(HW_ARMIRQMASK+0x20, 0);
36 * may it's here following; on the other
37 * hand it's already done by mini...
39 * write32(HW_PPCIRQMASK+0x04+0x08, 0);
40 * write32(HW_PPCIRQMASK+0x20+0x08, 0);
46 void irq_shutdown(void)
48 write32(HW_PPCIRQMASK, 0);
49 write32(HW_PPCIRQFLAG, 0xffffffff);
53 void irq_handler(void)
55 u32 enabled = read32(BW_PI_IRQMASK);
56 u32 flags = read32(BW_PI_IRQFLAG);
58 flags = flags & enabled;
60 if (flags & (1<<BW_PI_IRQ_RESET)) {
61 write32(BW_PI_IRQFLAG, 1<<BW_PI_IRQ_RESET);
62 printf("IRQ-BW RESET\n");
64 if (flags & (1<<BW_PI_IRQ_HW)) { //HW-PIC IRQ
65 u32 hw_enabled = read32(HW_PPCIRQMASK);
66 u32 hw_flags = read32(HW_PPCIRQFLAG);
68 //printf("In IRQ handler: 0x%08x 0x%08x 0x%08x\n", hw_enabled, hw_flags, hw_flags & hw_enabled);
70 hw_flags = hw_flags & hw_enabled;
72 if(hw_flags & IRQF_TIMER) {
73 write32(HW_PPCIRQFLAG, IRQF_TIMER);
75 if(hw_flags & IRQF_NAND) {
76 // printf("IRQ: NAND\n");
77 // hmmm... should be done by mini?
78 write32(NAND_CMD, 0x7fffffff); // shut it up
79 write32(HW_PPCIRQFLAG, IRQF_NAND);
82 if(hw_flags & IRQF_GPIO1B) {
83 // printf("IRQ: GPIO1B\n");
84 // hmmm... should be done by mini?
85 write32(HW_GPIO1BINTFLAG, 0xFFFFFF); // shut it up
86 write32(HW_PPCIRQFLAG, IRQF_GPIO1B);
88 if(hw_flags & IRQF_GPIO1) {
89 // printf("IRQ: GPIO1\n");
90 // hmmm... should be done by mini?
91 write32(HW_GPIO1INTFLAG, 0xFFFFFF); // shut it up
92 write32(HW_PPCIRQFLAG, IRQF_GPIO1);
94 if(hw_flags & IRQF_RESET) {
95 // printf("IRQ: RESET\n");
96 write32(HW_PPCIRQFLAG, IRQF_RESET);
98 if(hw_flags & IRQF_IPC) {
99 //printf("IRQ: IPC\n");
100 //not necessary here?
102 write32(HW_PPCIRQFLAG, IRQF_IPC);
104 if(hw_flags & IRQF_AES) {
105 // printf("IRQ: AES\n");
106 write32(HW_PPCIRQFLAG, IRQF_AES);
108 if (hw_flags & IRQF_SDHC) {
109 // printf("IRQ: SDHC\n");
110 write32(HW_PPCIRQFLAG, IRQF_SDHC);
113 if (hw_flags & IRQF_OHCI0) {
115 write32(HW_PPCIRQFLAG, IRQF_OHCI0);
117 if (hw_flags & IRQF_OHCI1) {
119 write32(HW_PPCIRQFLAG, IRQF_OHCI1);
122 hw_flags &= ~IRQF_ALL;
124 printf("IRQ: unknown 0x%08x\n", hw_flags);
125 write32(HW_PPCIRQFLAG, hw_flags);
128 // not necessary here, but "cleaner"?
129 write32(BW_PI_IRQFLAG, 1<<BW_PI_IRQ_HW);
133 void irq_bw_enable(u32 irq)
135 set32(BW_PI_IRQMASK, 1<<irq);
138 void irq_bw_disable(u32 irq) {
139 clear32(BW_PI_IRQMASK, 1<<irq);
142 void irq_hw_enable(u32 irq)
144 set32(HW_PPCIRQMASK, 1<<irq);
147 void irq_hw_disable(u32 irq)
149 clear32(HW_PPCIRQMASK, 1<<irq);
154 _CPU_ISR_Disable(cookie);
158 void irq_restore(u32 cookie) {
159 _CPU_ISR_Restore(cookie);
160 _CPU_ISR_Enable(); //wtf :/