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