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91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/*
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mini - a Free Software replacement for the Nintendo/BroadOn IOS.
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PowerPC support code
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Copyright (C) 2008, 2009 Sven Peter <svenpeter@gmail.com>
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Copyright (C) 2009 Andre Heider "dhewg" <dhewg@wiibrew.org>
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# This code is licensed to you under the terms of the GNU GPL, version 2;
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# see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
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*/
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#include "types.h"
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#include "memory.h"
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#include "powerpc.h"
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#include "powerpc_elf.h"
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#include "hollywood.h"
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#include "utils.h"
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#include "start.h"
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#include "gecko.h"
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void powerpc_upload_stub(u32 entry)
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{
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u32 i;
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set32(HW_EXICTRL, EXICTRL_ENABLE_EXI);
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// lis r3, entry@h
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write32(EXI_BOOT_BASE + 4 * 0, 0x3c600000 | entry >> 16);
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// ori r3, r3, entry@l
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write32(EXI_BOOT_BASE + 4 * 1, 0x60630000 | (entry & 0xffff));
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// mtsrr0 r3
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write32(EXI_BOOT_BASE + 4 * 2, 0x7c7a03a6);
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// li r3, 0
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write32(EXI_BOOT_BASE + 4 * 3, 0x38600000);
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// mtsrr1 r3
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write32(EXI_BOOT_BASE + 4 * 4, 0x7c7b03a6);
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// rfi
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write32(EXI_BOOT_BASE + 4 * 5, 0x4c000064);
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for (i = 6; i < 0x10; ++i)
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write32(EXI_BOOT_BASE + 4 * i, 0);
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set32(HW_DIFLAGS, DIFLAGS_BOOT_CODE);
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set32(HW_AHBPROT, 0xFFFFFFFF);
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gecko_printf("disabling EXI now...\n");
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clear32(HW_EXICTRL, EXICTRL_ENABLE_EXI);
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}
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void powerpc_hang(void)
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{
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clear32(HW_RESETS, 0x30);
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udelay(100);
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set32(HW_RESETS, 0x20);
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udelay(100);
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}
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void powerpc_reset(void)
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{
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// enable the broadway IPC interrupt
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write32(HW_PPCIRQMASK, (1<<30));
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clear32(HW_RESETS, 0x30);
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udelay(100);
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set32(HW_RESETS, 0x20);
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udelay(100);
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set32(HW_RESETS, 0x10);
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udelay(100000);
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set32(HW_EXICTRL, EXICTRL_ENABLE_EXI);
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}
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void powerpc_ipc(volatile ipc_request *req)
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{
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switch (req->req) {
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case IPC_PPC_BOOT:
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if (req->args[0]) {
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// Enqueued from ARM side, do not invalidate mem nor ipc_post
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powerpc_boot_mem((u8 *) req->args[1], req->args[2]);
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} else {
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dc_invalidaterange((void *) req->args[1], req->args[2]);
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int res = powerpc_boot_mem((u8 *) req->args[1], req->args[2]);
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if (res)
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ipc_post(req->code, req->tag, 1, res);
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}
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break;
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default:
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gecko_printf("IPC: unknown SLOW PPC request %04X\n", req->req);
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}
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}
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