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https://github.com/fail0verflow/mini.git
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2100d84d7c
New function ipc_enqueue_slow() to enqueue to the slow in_queue from within mini's irq context. The SDHC driver and the geckoloader uses this, which in return gets our irq stack size down again to a sane value.
100 lines
2.5 KiB
C
100 lines
2.5 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 program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, version 2.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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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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()
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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()
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{
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write32(0xD800034, 0x40000000);
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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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