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/*
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* QEMU PPC PREP hardware System Emulator
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*
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* Copyright (c) 2003-2004 Jocelyn Mayer
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h" |
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#include "m48t59.h" |
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/* XXX: move all TB related stuff in ppc_prep.c and suppress ppc.c ? */
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ppc_tb_t *cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq); |
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//#define HARD_DEBUG_PPC_IO
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//#define DEBUG_PPC_IO
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extern int loglevel; |
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extern FILE *logfile;
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#if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
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#define DEBUG_PPC_IO
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#endif
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#if defined (HARD_DEBUG_PPC_IO)
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#define PPC_IO_DPRINTF(fmt, args...) \
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do { \
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if (loglevel > 0) { \ |
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fprintf(logfile, "%s: " fmt, __func__ , ##args); \ |
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} else { \
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printf("%s : " fmt, __func__ , ##args); \ |
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} \ |
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} while (0) |
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#elif defined (DEBUG_PPC_IO)
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#define PPC_IO_DPRINTF(fmt, args...) \
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do { \
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if (loglevel > 0) { \ |
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fprintf(logfile, "%s: " fmt, __func__ , ##args); \ |
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} \ |
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} while (0) |
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#else
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#define PPC_IO_DPRINTF(fmt, args...) do { } while (0) |
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#endif
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#define BIOS_FILENAME "ppc_rom.bin" |
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#define KERNEL_LOAD_ADDR 0x00000000 |
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#define KERNEL_STACK_ADDR 0x00400000 |
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#define INITRD_LOAD_ADDR 0x00800000 |
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|
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int load_kernel(const char *filename, uint8_t *addr, |
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uint8_t *real_addr) |
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{ |
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int fd, size;
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int setup_sects;
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fd = open(filename, O_RDONLY); |
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if (fd < 0) |
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return -1; |
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|
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/* load 16 bit code */
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if (read(fd, real_addr, 512) != 512) |
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goto fail;
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setup_sects = real_addr[0x1F1];
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if (!setup_sects)
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setup_sects = 4;
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if (read(fd, real_addr + 512, setup_sects * 512) != |
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setup_sects * 512)
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goto fail;
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/* load 32 bit code */
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size = read(fd, addr, 16 * 1024 * 1024); |
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if (size < 0) |
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goto fail;
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close(fd); |
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return size;
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fail:
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close(fd); |
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return -1; |
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} |
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static const int ide_iobase[2] = { 0x1f0, 0x170 }; |
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static const int ide_iobase2[2] = { 0x3f6, 0x376 }; |
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static const int ide_irq[2] = { 13, 13 }; |
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#define NE2000_NB_MAX 6 |
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static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; |
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static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; |
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|
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/* IO ports emulation */
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#define PPC_IO_BASE 0x80000000 |
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static void PPC_io_writeb (target_phys_addr_t addr, uint32_t value) |
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{ |
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/* Don't polute serial port output */
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#if 0
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if ((addr < 0x800003F0 || addr > 0x80000400) &&
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(addr < 0x80000074 || addr > 0x80000077) &&
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(addr < 0x80000020 || addr > 0x80000021) &&
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(addr < 0x800000a0 || addr > 0x800000a1) &&
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(addr < 0x800001f0 || addr > 0x800001f7) &&
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(addr < 0x80000170 || addr > 0x80000177))
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#endif
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{ |
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PPC_IO_DPRINTF("0x%08x => 0x%02x\n", addr - PPC_IO_BASE, value);
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} |
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cpu_outb(NULL, addr - PPC_IO_BASE, value);
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} |
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static uint32_t PPC_io_readb (target_phys_addr_t addr)
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{ |
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uint32_t ret = cpu_inb(NULL, addr - PPC_IO_BASE);
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#if 0
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if ((addr < 0x800003F0 || addr > 0x80000400) &&
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(addr < 0x80000074 || addr > 0x80000077) &&
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(addr < 0x80000020 || addr > 0x80000021) &&
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(addr < 0x800000a0 || addr > 0x800000a1) &&
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(addr < 0x800001f0 || addr > 0x800001f7) &&
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(addr < 0x80000170 || addr > 0x80000177) &&
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(addr < 0x8000060 || addr > 0x8000064))
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#endif
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{ |
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PPC_IO_DPRINTF("0x%08x <= 0x%02x\n", addr - PPC_IO_BASE, ret);
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} |
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return ret;
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} |
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static void PPC_io_writew (target_phys_addr_t addr, uint32_t value) |
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{ |
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if ((addr < 0x800001f0 || addr > 0x800001f7) && |
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(addr < 0x80000170 || addr > 0x80000177)) { |
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PPC_IO_DPRINTF("0x%08x => 0x%04x\n", addr - PPC_IO_BASE, value);
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} |
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#ifdef TARGET_WORDS_BIGENDIAN
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value = bswap16(value); |
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#endif
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cpu_outw(NULL, addr - PPC_IO_BASE, value);
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} |
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static uint32_t PPC_io_readw (target_phys_addr_t addr)
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{ |
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uint32_t ret = cpu_inw(NULL, addr - PPC_IO_BASE);
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#ifdef TARGET_WORDS_BIGENDIAN
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ret = bswap16(ret); |
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#endif
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if ((addr < 0x800001f0 || addr > 0x800001f7) && |
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(addr < 0x80000170 || addr > 0x80000177)) { |
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PPC_IO_DPRINTF("0x%08x <= 0x%04x\n", addr - PPC_IO_BASE, ret);
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} |
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return ret;
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} |
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static void PPC_io_writel (target_phys_addr_t addr, uint32_t value) |
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{ |
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PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr - PPC_IO_BASE, value);
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#ifdef TARGET_WORDS_BIGENDIAN
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value = bswap32(value); |
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#endif
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cpu_outl(NULL, addr - PPC_IO_BASE, value);
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} |
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static uint32_t PPC_io_readl (target_phys_addr_t addr)
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{ |
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uint32_t ret = cpu_inl(NULL, addr - PPC_IO_BASE);
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#ifdef TARGET_WORDS_BIGENDIAN
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ret = bswap32(ret); |
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#endif
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PPC_IO_DPRINTF("0x%08x <= 0x%08x\n", addr - PPC_IO_BASE, ret);
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return ret;
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} |
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static CPUWriteMemoryFunc *PPC_io_write[] = {
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&PPC_io_writeb, |
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&PPC_io_writew, |
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&PPC_io_writel, |
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}; |
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static CPUReadMemoryFunc *PPC_io_read[] = {
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&PPC_io_readb, |
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&PPC_io_readw, |
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&PPC_io_readl, |
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}; |
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/* Read-only register (?) */
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static void _PPC_ioB_write (target_phys_addr_t addr, uint32_t value) |
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{ |
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// printf("%s: 0x%08x => 0x%08x\n", __func__, addr, value);
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} |
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static uint32_t _PPC_ioB_read (target_phys_addr_t addr)
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{ |
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uint32_t retval = 0;
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if (addr == 0xBFFFFFF0) |
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retval = pic_intack_read(NULL);
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// printf("%s: 0x%08x <= %d\n", __func__, addr, retval);
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return retval;
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} |
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static CPUWriteMemoryFunc *PPC_ioB_write[] = {
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&_PPC_ioB_write, |
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&_PPC_ioB_write, |
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&_PPC_ioB_write, |
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}; |
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static CPUReadMemoryFunc *PPC_ioB_read[] = {
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&_PPC_ioB_read, |
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&_PPC_ioB_read, |
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&_PPC_ioB_read, |
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}; |
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#if 0
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static CPUWriteMemoryFunc *PPC_io3_write[] = {
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&PPC_io3_writeb,
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&PPC_io3_writew,
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&PPC_io3_writel,
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};
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static CPUReadMemoryFunc *PPC_io3_read[] = {
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&PPC_io3_readb,
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&PPC_io3_readw,
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&PPC_io3_readl,
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};
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#endif
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/* Fake super-io ports for PREP platform (Intel 82378ZB) */
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static uint8_t PREP_fake_io[2]; |
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static uint8_t NVRAM_lock;
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static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val) |
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{ |
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PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr - PPC_IO_BASE, val);
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PREP_fake_io[addr - 0x0398] = val;
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} |
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static uint32_t PREP_io_read (void *opaque, uint32_t addr) |
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{ |
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PPC_IO_DPRINTF("0x%08x <= 0x%08x\n", addr - PPC_IO_BASE, PREP_fake_io[addr - 0x0398]); |
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return PREP_fake_io[addr - 0x0398]; |
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} |
260 |
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static uint8_t syscontrol;
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static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val) |
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{ |
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PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr - PPC_IO_BASE, val);
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switch (addr) {
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case 0x0092: |
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/* Special port 92 */
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/* Check soft reset asked */
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if (val & 0x80) { |
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printf("Soft reset asked... Stop emulation\n");
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abort(); |
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} |
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/* Check LE mode */
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if (val & 0x40) { |
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printf("Little Endian mode isn't supported (yet ?)\n");
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abort(); |
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} |
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break;
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case 0x0808: |
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/* Hardfile light register: don't care */
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break;
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case 0x0810: |
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/* Password protect 1 register */
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NVRAM_lock ^= 0x01;
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break;
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case 0x0812: |
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/* Password protect 2 register */
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NVRAM_lock ^= 0x02;
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break;
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case 0x0814: |
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/* L2 invalidate register: don't care */
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break;
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case 0x081C: |
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/* system control register */
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syscontrol = val; |
297 |
break;
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case 0x0850: |
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/* I/O map type register */
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if (val & 0x80) { |
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printf("No support for non-continuous I/O map mode\n");
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abort(); |
303 |
} |
304 |
break;
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default:
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break;
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} |
308 |
} |
309 |
|
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static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr) |
311 |
{ |
312 |
uint32_t retval = 0xFF;
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313 |
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switch (addr) {
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case 0x0092: |
316 |
/* Special port 92 */
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retval = 0x40;
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break;
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case 0x080C: |
320 |
/* Equipment present register:
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321 |
* no L2 cache
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* no upgrade processor
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* no cards in PCI slots
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* SCSI fuse is bad
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*/
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retval = 0xFC;
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break;
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328 |
case 0x0818: |
329 |
/* Keylock */
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330 |
retval = 0x00;
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331 |
break;
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332 |
case 0x081C: |
333 |
/* system control register
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334 |
* 7 - 6 / 1 - 0: L2 cache enable
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*/
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retval = syscontrol; |
337 |
break;
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338 |
case 0x0823: |
339 |
/* */
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340 |
retval = 0x03; /* no L2 cache */ |
341 |
break;
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342 |
case 0x0850: |
343 |
/* I/O map type register */
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344 |
retval = 0x00;
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345 |
break;
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346 |
default:
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347 |
break;
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348 |
} |
349 |
PPC_IO_DPRINTF("0x%08x <= 0x%08x\n", addr - PPC_IO_BASE, retval);
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350 |
|
351 |
return retval;
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352 |
} |
353 |
|
354 |
#define NVRAM_SIZE 0x2000 |
355 |
#define NVRAM_END 0x1FF0 |
356 |
#define NVRAM_OSAREA_SIZE 512 |
357 |
#define NVRAM_CONFSIZE 1024 |
358 |
|
359 |
static inline void NVRAM_set_byte (m48t59_t *nvram, uint32_t addr, uint8_t value) |
360 |
{ |
361 |
m48t59_set_addr(nvram, addr); |
362 |
m48t59_write(nvram, value); |
363 |
} |
364 |
|
365 |
static inline uint8_t NVRAM_get_byte (m48t59_t *nvram, uint32_t addr) |
366 |
{ |
367 |
m48t59_set_addr(nvram, addr); |
368 |
return m48t59_read(nvram);
|
369 |
} |
370 |
|
371 |
static inline void NVRAM_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value) |
372 |
{ |
373 |
m48t59_set_addr(nvram, addr); |
374 |
m48t59_write(nvram, value >> 8);
|
375 |
m48t59_set_addr(nvram, addr + 1);
|
376 |
m48t59_write(nvram, value & 0xFF);
|
377 |
} |
378 |
|
379 |
static inline uint16_t NVRAM_get_word (m48t59_t *nvram, uint32_t addr) |
380 |
{ |
381 |
uint16_t tmp; |
382 |
|
383 |
m48t59_set_addr(nvram, addr); |
384 |
tmp = m48t59_read(nvram) << 8;
|
385 |
m48t59_set_addr(nvram, addr + 1);
|
386 |
tmp |= m48t59_read(nvram); |
387 |
|
388 |
return tmp;
|
389 |
} |
390 |
|
391 |
static inline void NVRAM_set_lword (m48t59_t *nvram, uint32_t addr, |
392 |
uint32_t value) |
393 |
{ |
394 |
m48t59_set_addr(nvram, addr); |
395 |
m48t59_write(nvram, value >> 24);
|
396 |
m48t59_set_addr(nvram, addr + 1);
|
397 |
m48t59_write(nvram, (value >> 16) & 0xFF); |
398 |
m48t59_set_addr(nvram, addr + 2);
|
399 |
m48t59_write(nvram, (value >> 8) & 0xFF); |
400 |
m48t59_set_addr(nvram, addr + 3);
|
401 |
m48t59_write(nvram, value & 0xFF);
|
402 |
} |
403 |
|
404 |
static inline uint32_t NVRAM_get_lword (m48t59_t *nvram, uint32_t addr) |
405 |
{ |
406 |
uint32_t tmp; |
407 |
|
408 |
m48t59_set_addr(nvram, addr); |
409 |
tmp = m48t59_read(nvram) << 24;
|
410 |
m48t59_set_addr(nvram, addr + 1);
|
411 |
tmp |= m48t59_read(nvram) << 16;
|
412 |
m48t59_set_addr(nvram, addr + 2);
|
413 |
tmp |= m48t59_read(nvram) << 8;
|
414 |
m48t59_set_addr(nvram, addr + 3);
|
415 |
tmp |= m48t59_read(nvram); |
416 |
|
417 |
return tmp;
|
418 |
} |
419 |
|
420 |
static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
|
421 |
{ |
422 |
uint16_t tmp; |
423 |
uint16_t pd, pd1, pd2; |
424 |
|
425 |
tmp = prev >> 8;
|
426 |
pd = prev ^ value; |
427 |
pd1 = pd & 0x000F;
|
428 |
pd2 = ((pd >> 4) & 0x000F) ^ pd1; |
429 |
tmp ^= (pd1 << 3) | (pd1 << 8); |
430 |
tmp ^= pd2 | (pd2 << 7) | (pd2 << 12); |
431 |
|
432 |
return tmp;
|
433 |
} |
434 |
|
435 |
static void NVRAM_set_crc (m48t59_t *nvram, uint32_t addr, |
436 |
uint32_t start, uint32_t count) |
437 |
{ |
438 |
uint32_t i; |
439 |
uint16_t crc = 0xFFFF;
|
440 |
int odd = 0; |
441 |
|
442 |
if (count & 1) |
443 |
odd = 1;
|
444 |
count &= ~1;
|
445 |
for (i = 0; i != count; i++) { |
446 |
crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i)); |
447 |
} |
448 |
if (odd) {
|
449 |
crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
|
450 |
} |
451 |
NVRAM_set_word(nvram, addr, crc); |
452 |
} |
453 |
|
454 |
static void prep_NVRAM_init (void) |
455 |
{ |
456 |
m48t59_t *nvram; |
457 |
|
458 |
nvram = m48t59_init(8, 0x0074, NVRAM_SIZE); |
459 |
/* NVRAM header */
|
460 |
/* 0x00: NVRAM size in kB */
|
461 |
NVRAM_set_word(nvram, 0x00, NVRAM_SIZE >> 10); |
462 |
/* 0x02: NVRAM version */
|
463 |
NVRAM_set_byte(nvram, 0x02, 0x01); |
464 |
/* 0x03: NVRAM revision */
|
465 |
NVRAM_set_byte(nvram, 0x03, 0x01); |
466 |
/* 0x08: last OS */
|
467 |
NVRAM_set_byte(nvram, 0x08, 0x00); /* Unknown */ |
468 |
/* 0x09: endian */
|
469 |
NVRAM_set_byte(nvram, 0x09, 'B'); /* Big-endian */ |
470 |
/* 0x0A: OSArea usage */
|
471 |
NVRAM_set_byte(nvram, 0x0A, 0x00); /* Empty */ |
472 |
/* 0x0B: PM mode */
|
473 |
NVRAM_set_byte(nvram, 0x0B, 0x00); /* Normal */ |
474 |
/* Restart block description record */
|
475 |
/* 0x0C: restart block version */
|
476 |
NVRAM_set_word(nvram, 0x0C, 0x01); |
477 |
/* 0x0E: restart block revision */
|
478 |
NVRAM_set_word(nvram, 0x0E, 0x01); |
479 |
/* 0x20: restart address */
|
480 |
NVRAM_set_lword(nvram, 0x20, 0x00); |
481 |
/* 0x24: save area address */
|
482 |
NVRAM_set_lword(nvram, 0x24, 0x00); |
483 |
/* 0x28: save area length */
|
484 |
NVRAM_set_lword(nvram, 0x28, 0x00); |
485 |
/* 0x1C: checksum of restart block */
|
486 |
NVRAM_set_crc(nvram, 0x1C, 0x0C, 32); |
487 |
|
488 |
/* Security section */
|
489 |
/* Set all to zero */
|
490 |
/* 0xC4: pointer to global environment area */
|
491 |
NVRAM_set_lword(nvram, 0xC4, 0x0100); |
492 |
/* 0xC8: size of global environment area */
|
493 |
NVRAM_set_lword(nvram, 0xC8,
|
494 |
NVRAM_END - NVRAM_OSAREA_SIZE - NVRAM_CONFSIZE - 0x0100);
|
495 |
/* 0xD4: pointer to configuration area */
|
496 |
NVRAM_set_lword(nvram, 0xD4, NVRAM_END - NVRAM_CONFSIZE);
|
497 |
/* 0xD8: size of configuration area */
|
498 |
NVRAM_set_lword(nvram, 0xD8, NVRAM_CONFSIZE);
|
499 |
/* 0xE8: pointer to OS specific area */
|
500 |
NVRAM_set_lword(nvram, 0xE8,
|
501 |
NVRAM_END - NVRAM_CONFSIZE - NVRAM_OSAREA_SIZE); |
502 |
/* 0xD8: size of OS specific area */
|
503 |
NVRAM_set_lword(nvram, 0xEC, NVRAM_OSAREA_SIZE);
|
504 |
|
505 |
/* Configuration area */
|
506 |
/* RTC init */
|
507 |
// NVRAM_set_lword(nvram, 0x1FFC, 0x50);
|
508 |
|
509 |
/* 0x04: checksum 0 => OS area */
|
510 |
NVRAM_set_crc(nvram, 0x04, 0x00, |
511 |
NVRAM_END - NVRAM_CONFSIZE - NVRAM_OSAREA_SIZE); |
512 |
/* 0x06: checksum of config area */
|
513 |
NVRAM_set_crc(nvram, 0x06, NVRAM_END - NVRAM_CONFSIZE, NVRAM_CONFSIZE);
|
514 |
} |
515 |
|
516 |
int load_initrd (const char *filename, uint8_t *addr) |
517 |
{ |
518 |
int fd, size;
|
519 |
|
520 |
printf("Load initrd\n");
|
521 |
fd = open(filename, O_RDONLY); |
522 |
if (fd < 0) |
523 |
return -1; |
524 |
size = read(fd, addr, 16 * 1024 * 1024); |
525 |
if (size < 0) |
526 |
goto fail;
|
527 |
close(fd); |
528 |
printf("Load initrd: %d\n", size);
|
529 |
return size;
|
530 |
fail:
|
531 |
close(fd); |
532 |
printf("Load initrd failed\n");
|
533 |
return -1; |
534 |
} |
535 |
|
536 |
/* Quick hack for PPC memory infos... */
|
537 |
static void put_long (void *addr, uint32_t l) |
538 |
{ |
539 |
char *pos = addr;
|
540 |
pos[0] = (l >> 24) & 0xFF; |
541 |
pos[1] = (l >> 16) & 0xFF; |
542 |
pos[2] = (l >> 8) & 0xFF; |
543 |
pos[3] = l & 0xFF; |
544 |
} |
545 |
|
546 |
/* bootloader infos are in the form:
|
547 |
* uint32_t TAG
|
548 |
* uint32_t TAG_size (from TAG to next TAG).
|
549 |
* data
|
550 |
* ....
|
551 |
*/
|
552 |
#if !defined (USE_OPEN_FIRMWARE)
|
553 |
static void *set_bootinfo_tag (void *addr, uint32_t tag, uint32_t size, |
554 |
void *data)
|
555 |
{ |
556 |
char *pos = addr;
|
557 |
|
558 |
put_long(pos, tag); |
559 |
pos += 4;
|
560 |
put_long(pos, size + 8);
|
561 |
pos += 4;
|
562 |
memcpy(pos, data, size); |
563 |
pos += size; |
564 |
|
565 |
return pos;
|
566 |
} |
567 |
#endif
|
568 |
|
569 |
typedef struct boot_dev_t { |
570 |
const unsigned char *name; |
571 |
int major;
|
572 |
int minor;
|
573 |
} boot_dev_t; |
574 |
|
575 |
static boot_dev_t boot_devs[] =
|
576 |
{ |
577 |
{ "/dev/fd0", 2, 0, }, |
578 |
{ "/dev/fd1", 2, 1, }, |
579 |
{ "/dev/hda", 3, 1, }, |
580 |
// { "/dev/ide/host0/bus0/target0/lun0/part1", 3, 1, },
|
581 |
// { "/dev/hdc", 22, 0, },
|
582 |
{ "/dev/hdc", 22, 1, }, |
583 |
{ "/dev/ram0 init=/linuxrc", 1, 0, }, |
584 |
}; |
585 |
|
586 |
/* BATU:
|
587 |
* BEPI : bloc virtual address
|
588 |
* BL : area size bits (128 kB is 0, 256 1, 512 3, ...
|
589 |
* Vs/Vp
|
590 |
* BATL:
|
591 |
* BPRN : bloc real address align on 4MB boundary
|
592 |
* WIMG : cache access mode : not used
|
593 |
* PP : protection bits
|
594 |
*/
|
595 |
static void setup_BAT (CPUPPCState *env, int BAT, |
596 |
uint32_t virtual, uint32_t physical, |
597 |
uint32_t size, int Vs, int Vp, int PP) |
598 |
{ |
599 |
uint32_t sz_bits, tmp_sz, align, tmp; |
600 |
|
601 |
sz_bits = 0;
|
602 |
align = 131072;
|
603 |
for (tmp_sz = size / 131072; tmp_sz != 1; tmp_sz = tmp_sz >> 1) { |
604 |
sz_bits = (sz_bits << 1) + 1; |
605 |
align = align << 1;
|
606 |
} |
607 |
tmp = virtual & ~(align - 1); /* Align virtual area start */ |
608 |
tmp |= sz_bits << 2; /* Fix BAT size */ |
609 |
tmp |= Vs << 1; /* Supervisor access */ |
610 |
tmp |= Vp; /* User access */
|
611 |
env->DBAT[0][BAT] = tmp;
|
612 |
env->IBAT[0][BAT] = tmp;
|
613 |
tmp = physical & ~(align - 1); /* Align physical area start */ |
614 |
tmp |= 0; /* Don't care about WIMG */ |
615 |
tmp |= PP; /* Protection */
|
616 |
env->DBAT[1][BAT] = tmp;
|
617 |
env->IBAT[1][BAT] = tmp;
|
618 |
printf("Set BATU0 to 0x%08x BATL0 to 0x%08x\n",
|
619 |
env->DBAT[0][BAT], env->DBAT[1][BAT]); |
620 |
} |
621 |
|
622 |
static void VGA_printf (uint8_t *s) |
623 |
{ |
624 |
uint16_t *arg_ptr; |
625 |
unsigned int format_width, i; |
626 |
int in_format;
|
627 |
uint16_t arg, digit, nibble; |
628 |
uint8_t c; |
629 |
|
630 |
arg_ptr = (uint16_t *)((void *)&s);
|
631 |
in_format = 0;
|
632 |
format_width = 0;
|
633 |
while ((c = *s) != '\0') { |
634 |
if (c == '%') { |
635 |
in_format = 1;
|
636 |
format_width = 0;
|
637 |
} else if (in_format) { |
638 |
if ((c >= '0') && (c <= '9')) { |
639 |
format_width = (format_width * 10) + (c - '0'); |
640 |
} else if (c == 'x') { |
641 |
arg_ptr++; // increment to next arg
|
642 |
arg = *arg_ptr; |
643 |
if (format_width == 0) |
644 |
format_width = 4;
|
645 |
digit = format_width - 1;
|
646 |
for (i = 0; i < format_width; i++) { |
647 |
nibble = (arg >> (4 * digit)) & 0x000f; |
648 |
if (nibble <= 9) |
649 |
PPC_io_writeb(PPC_IO_BASE + 0x500, nibble + '0'); |
650 |
else
|
651 |
PPC_io_writeb(PPC_IO_BASE + 0x500, nibble + 'A'); |
652 |
digit--; |
653 |
} |
654 |
in_format = 0;
|
655 |
} |
656 |
//else if (c == 'd') {
|
657 |
// in_format = 0;
|
658 |
// }
|
659 |
} else {
|
660 |
PPC_io_writeb(PPC_IO_BASE + 0x500, c);
|
661 |
} |
662 |
s++; |
663 |
} |
664 |
} |
665 |
|
666 |
static void VGA_init (void) |
667 |
{ |
668 |
/* Basic VGA init, inspired by plex86 VGAbios */
|
669 |
#if 1 |
670 |
/* switch to color mode and enable CPU access 480 lines */
|
671 |
PPC_io_writeb(PPC_IO_BASE + 0x3C2, 0xC3); |
672 |
/* more than 64k 3C4/04 */
|
673 |
PPC_io_writeb(PPC_IO_BASE + 0x3C4, 0x04); |
674 |
PPC_io_writeb(PPC_IO_BASE + 0x3C5, 0x02); |
675 |
#endif
|
676 |
VGA_printf("PPC VGA BIOS...\n");
|
677 |
} |
678 |
|
679 |
extern CPUPPCState *global_env;
|
680 |
|
681 |
static uint32_t get_le32 (void *addr) |
682 |
{ |
683 |
return le32_to_cpu(*((uint32_t *)addr));
|
684 |
} |
685 |
|
686 |
void PPC_init_hw (/*CPUPPCState *env,*/ uint32_t mem_size, |
687 |
uint32_t kernel_addr, uint32_t kernel_size, |
688 |
uint32_t stack_addr, int boot_device,
|
689 |
const unsigned char *initrd_file) |
690 |
{ |
691 |
CPUPPCState *env = global_env; |
692 |
uint8_t *p; |
693 |
#if !defined (USE_OPEN_FIRMWARE)
|
694 |
char *tmp;
|
695 |
uint32_t tmpi[2];
|
696 |
#endif
|
697 |
|
698 |
printf("RAM size: %u 0x%08x (%u)\n", mem_size, mem_size, mem_size >> 20); |
699 |
#if defined (USE_OPEN_FIRMWARE)
|
700 |
setup_memory(env, mem_size); |
701 |
#endif
|
702 |
|
703 |
/* Fake bootloader */
|
704 |
{ |
705 |
#if 1 |
706 |
uint32_t offset = get_le32(phys_ram_base + kernel_addr); |
707 |
#else
|
708 |
uint32_t offset = 12;
|
709 |
#endif
|
710 |
env->nip = kernel_addr + offset; |
711 |
printf("Start address: 0x%08x\n", env->nip);
|
712 |
} |
713 |
/* Set up msr according to PREP specification */
|
714 |
msr_ee = 0;
|
715 |
msr_fp = 1;
|
716 |
msr_pr = 0; /* Start in supervisor mode */ |
717 |
msr_me = 1;
|
718 |
msr_fe0 = msr_fe1 = 0;
|
719 |
msr_ip = 0;
|
720 |
msr_ir = msr_dr = 1;
|
721 |
// msr_sf = 0;
|
722 |
msr_le = msr_ile = 0;
|
723 |
env->gpr[1] = stack_addr; /* Let's have a stack */ |
724 |
env->gpr[2] = 0; |
725 |
env->gpr[8] = kernel_addr;
|
726 |
/* There is a bug in 2.4 kernels:
|
727 |
* if a decrementer exception is pending when it enables msr_ee,
|
728 |
* it's not ready to handle it...
|
729 |
*/
|
730 |
p = phys_ram_base + kernel_addr; |
731 |
#if !defined (USE_OPEN_FIRMWARE)
|
732 |
/* Let's register the whole memory available only in supervisor mode */
|
733 |
setup_BAT(env, 0, 0x00000000, 0x00000000, mem_size, 1, 0, 2); |
734 |
/* Avoid open firmware init call (to get a console)
|
735 |
* This will make the kernel think we are a PREP machine...
|
736 |
*/
|
737 |
put_long(p, 0xdeadc0de);
|
738 |
/* Build a real stack room */
|
739 |
p = phys_ram_base + stack_addr; |
740 |
put_long(p, stack_addr); |
741 |
p -= 32;
|
742 |
env->gpr[1] -= 32; |
743 |
/* Pretend there are no residual data */
|
744 |
env->gpr[3] = 0; |
745 |
if (initrd_file != NULL) { |
746 |
int size;
|
747 |
env->gpr[4] = (kernel_addr + kernel_size + 4095) & ~4095; |
748 |
size = load_initrd(initrd_file, |
749 |
phys_ram_base + env->gpr[4]);
|
750 |
if (size < 0) { |
751 |
/* No initrd */
|
752 |
env->gpr[4] = env->gpr[5] = 0; |
753 |
} else {
|
754 |
env->gpr[5] = size;
|
755 |
boot_device = 'e';
|
756 |
} |
757 |
printf("Initrd loaded at 0x%08x (%d) (0x%08x 0x%08x)\n",
|
758 |
env->gpr[4], env->gpr[5], kernel_addr, kernel_size); |
759 |
} else {
|
760 |
env->gpr[4] = env->gpr[5] = 0; |
761 |
} |
762 |
/* We have to put bootinfos after the BSS
|
763 |
* The BSS starts after the kernel end.
|
764 |
*/
|
765 |
#if 0
|
766 |
p = phys_ram_base + kernel_addr +
|
767 |
kernel_size + (1 << 20) - 1) & ~((1 << 20) - 1);
|
768 |
#else
|
769 |
p = phys_ram_base + kernel_addr + 0x400000;
|
770 |
#endif
|
771 |
if (loglevel > 0) { |
772 |
fprintf(logfile, "bootinfos: %p 0x%08x\n",
|
773 |
p, (int)(p - phys_ram_base));
|
774 |
} else {
|
775 |
printf("bootinfos: %p 0x%08x\n",
|
776 |
p, (int)(p - phys_ram_base));
|
777 |
} |
778 |
/* Command line: let's put it after bootinfos */
|
779 |
#if 0
|
780 |
sprintf(p + 0x1000, "console=ttyS0,9600 root=%02x%02x mem=%dM",
|
781 |
boot_devs[boot_device - 'a'].major,
|
782 |
boot_devs[boot_device - 'a'].minor,
|
783 |
mem_size >> 20);
|
784 |
#else
|
785 |
sprintf(p + 0x1000, "console=ttyS0,9600 console=tty0 root=%s mem=%dM", |
786 |
boot_devs[boot_device - 'a'].name,
|
787 |
mem_size >> 20);
|
788 |
#endif
|
789 |
env->gpr[6] = p + 0x1000 - phys_ram_base; |
790 |
env->gpr[7] = env->gpr[6] + strlen(p + 0x1000); |
791 |
if (loglevel > 0) { |
792 |
fprintf(logfile, "cmdline: %p 0x%08x [%s]\n",
|
793 |
p + 0x1000, env->gpr[6], p + 0x1000); |
794 |
} else {
|
795 |
printf("cmdline: %p 0x%08x [%s]\n",
|
796 |
p + 0x1000, env->gpr[6], p + 0x1000); |
797 |
} |
798 |
/* BI_FIRST */
|
799 |
p = set_bootinfo_tag(p, 0x1010, 0, 0); |
800 |
/* BI_CMD_LINE */
|
801 |
p = set_bootinfo_tag(p, 0x1012, env->gpr[7] - env->gpr[6], |
802 |
env->gpr[6] + phys_ram_base);
|
803 |
/* BI_MEM_SIZE */
|
804 |
tmp = (void *)tmpi;
|
805 |
tmp[0] = (mem_size >> 24) & 0xFF; |
806 |
tmp[1] = (mem_size >> 16) & 0xFF; |
807 |
tmp[2] = (mem_size >> 8) & 0xFF; |
808 |
tmp[3] = mem_size & 0xFF; |
809 |
p = set_bootinfo_tag(p, 0x1017, 4, tmpi); |
810 |
/* BI_INITRD */
|
811 |
tmp[0] = (env->gpr[4] >> 24) & 0xFF; |
812 |
tmp[1] = (env->gpr[4] >> 16) & 0xFF; |
813 |
tmp[2] = (env->gpr[4] >> 8) & 0xFF; |
814 |
tmp[3] = env->gpr[4] & 0xFF; |
815 |
tmp[4] = (env->gpr[5] >> 24) & 0xFF; |
816 |
tmp[5] = (env->gpr[5] >> 16) & 0xFF; |
817 |
tmp[6] = (env->gpr[5] >> 8) & 0xFF; |
818 |
tmp[7] = env->gpr[5] & 0xFF; |
819 |
p = set_bootinfo_tag(p, 0x1014, 8, tmpi); |
820 |
env->gpr[4] = env->gpr[5] = 0; |
821 |
/* BI_LAST */
|
822 |
p = set_bootinfo_tag(p, 0x1011, 0, 0); |
823 |
#else
|
824 |
/* Set up MMU:
|
825 |
* kernel is loaded at kernel_addr and wants to be seen at 0x01000000
|
826 |
*/
|
827 |
setup_BAT(env, 0, 0x01000000, kernel_addr, 0x00400000, 1, 0, 2); |
828 |
{ |
829 |
#if 0
|
830 |
uint32_t offset = get_le32(phys_ram_base + kernel_addr);
|
831 |
#else
|
832 |
uint32_t offset = 12;
|
833 |
#endif
|
834 |
env->nip = 0x01000000 | (kernel_addr + offset);
|
835 |
printf("Start address: 0x%08x\n", env->nip);
|
836 |
} |
837 |
env->gpr[1] = env->nip + (1 << 22); |
838 |
p = phys_ram_base + stack_addr; |
839 |
put_long(p - 32, stack_addr);
|
840 |
env->gpr[1] -= 32; |
841 |
printf("Kernel starts at 0x%08x stack 0x%08x\n", env->nip, env->gpr[1]); |
842 |
/* We want all lower address not to be translated */
|
843 |
setup_BAT(env, 1, 0x00000000, 0x00000000, 0x010000000, 1, 1, 2); |
844 |
/* We also need a BAT to access OF */
|
845 |
setup_BAT(env, 2, 0xFFFE0000, mem_size - 131072, 131072, 1, 0, 1); |
846 |
/* Setup OF entry point */
|
847 |
{ |
848 |
char *p;
|
849 |
p = (char *)phys_ram_base + mem_size - 131072; |
850 |
/* Special opcode to call OF */
|
851 |
*p++ = 0x18; *p++ = 0x00; *p++ = 0x00; *p++ = 0x02; |
852 |
/* blr */
|
853 |
*p++ = 0x4E; *p++ = 0x80; *p++ = 0x00; *p++ = 0x20; |
854 |
} |
855 |
env->gpr[5] = 0xFFFE0000; |
856 |
/* Register translations */
|
857 |
{ |
858 |
OF_transl_t translations[3] = {
|
859 |
{ 0x01000000, 0x00400000, kernel_addr, 0x00000002, }, |
860 |
{ 0x00000000, 0x01000000, 0x00000000, 0x00000002, }, |
861 |
{ 0xFFFE0000, 0x00020000, mem_size - (128 * 1024), |
862 |
0x00000001, },
|
863 |
}; |
864 |
OF_register_translations(3, translations);
|
865 |
} |
866 |
/* Quite artificial, for now */
|
867 |
OF_register_bus("isa", "isa"); |
868 |
OF_register_serial("isa", "serial", 4, 0x3f8); |
869 |
OF_register_stdio("serial", "serial"); |
870 |
/* Set up RTAS service */
|
871 |
RTAS_init(); |
872 |
/* Command line: let's put it just over the stack */
|
873 |
#if 0
|
874 |
#if 0
|
875 |
p = phys_ram_base + kernel_addr +
|
876 |
kernel_size + (1 << 20) - 1) & ~((1 << 20) - 1);
|
877 |
#else
|
878 |
p = phys_ram_base + kernel_addr + 0x400000;
|
879 |
#endif
|
880 |
#if 1 |
881 |
sprintf(p, "console=ttyS0,9600 root=%02x%02x mem=%dM",
|
882 |
boot_devs[boot_device - 'a'].major,
|
883 |
boot_devs[boot_device - 'a'].minor,
|
884 |
mem_size >> 20);
|
885 |
#else
|
886 |
sprintf(p, "console=ttyS0,9600 root=%s mem=%dM ne2000=0x300,9",
|
887 |
boot_devs[boot_device - 'a'].name,
|
888 |
mem_size >> 20);
|
889 |
#endif
|
890 |
OF_register_bootargs(p); |
891 |
#endif
|
892 |
#endif
|
893 |
} |
894 |
|
895 |
void PPC_end_init (void) |
896 |
{ |
897 |
VGA_init(); |
898 |
} |
899 |
|
900 |
/* PowerPC PREP hardware initialisation */
|
901 |
void ppc_prep_init(int ram_size, int vga_ram_size, int boot_device, |
902 |
DisplayState *ds, const char **fd_filename, int snapshot, |
903 |
const char *kernel_filename, const char *kernel_cmdline, |
904 |
const char *initrd_filename) |
905 |
{ |
906 |
char buf[1024]; |
907 |
int PPC_io_memory;
|
908 |
int ret, linux_boot, initrd_size, i, nb_nics1, fd;
|
909 |
|
910 |
linux_boot = (kernel_filename != NULL);
|
911 |
|
912 |
/* allocate RAM */
|
913 |
cpu_register_physical_memory(0, ram_size, 0); |
914 |
|
915 |
isa_mem_base = 0xc0000000;
|
916 |
|
917 |
if (linux_boot) {
|
918 |
/* now we can load the kernel */
|
919 |
ret = load_image(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR); |
920 |
if (ret < 0) { |
921 |
fprintf(stderr, "qemu: could not load kernel '%s'\n",
|
922 |
kernel_filename); |
923 |
exit(1);
|
924 |
} |
925 |
/* load initrd */
|
926 |
initrd_size = 0;
|
927 |
#if 0
|
928 |
if (initrd_filename) {
|
929 |
initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
|
930 |
if (initrd_size < 0) {
|
931 |
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
932 |
initrd_filename);
|
933 |
exit(1);
|
934 |
}
|
935 |
}
|
936 |
#endif
|
937 |
PPC_init_hw(/*env,*/ ram_size, KERNEL_LOAD_ADDR, ret,
|
938 |
KERNEL_STACK_ADDR, boot_device, initrd_filename); |
939 |
} else {
|
940 |
/* allocate ROM */
|
941 |
// snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
|
942 |
snprintf(buf, sizeof(buf), "%s", BIOS_FILENAME); |
943 |
printf("load BIOS at %p\n", phys_ram_base + 0x000f0000); |
944 |
ret = load_image(buf, phys_ram_base + 0x000f0000);
|
945 |
if (ret != 0x10000) { |
946 |
fprintf(stderr, "qemu: could not load PPC bios '%s' (%d)\n%m\n",
|
947 |
buf, ret); |
948 |
exit(1);
|
949 |
} |
950 |
} |
951 |
|
952 |
cpu_ppc_tb_init(cpu_single_env, 100UL * 1000UL * 1000UL); |
953 |
|
954 |
/* init basic PC hardware */
|
955 |
vga_initialize(ds, phys_ram_base + ram_size, ram_size, |
956 |
vga_ram_size, 0);
|
957 |
rtc_init(0x70, 8); |
958 |
pic_init(); |
959 |
// pit_init(0x40, 0);
|
960 |
|
961 |
fd = serial_open_device(); |
962 |
serial_init(0x3f8, 4, fd); |
963 |
#if 1 |
964 |
nb_nics1 = nb_nics; |
965 |
if (nb_nics1 > NE2000_NB_MAX)
|
966 |
nb_nics1 = NE2000_NB_MAX; |
967 |
for(i = 0; i < nb_nics1; i++) { |
968 |
isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]); |
969 |
} |
970 |
#endif
|
971 |
|
972 |
for(i = 0; i < 2; i++) { |
973 |
isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i], |
974 |
bs_table[2 * i], bs_table[2 * i + 1]); |
975 |
} |
976 |
kbd_init(); |
977 |
AUD_init(); |
978 |
DMA_init(); |
979 |
// SB16_init();
|
980 |
|
981 |
fdctrl_init(6, 2, 0, 0x3f0, fd_table); |
982 |
|
983 |
/* Register 64 kB of IO space */
|
984 |
PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write);
|
985 |
cpu_register_physical_memory(0x80000000, 0x10000, PPC_io_memory); |
986 |
/* Register fake IO ports for PREP */
|
987 |
register_ioport_read(0x398, 2, 1, &PREP_io_read, NULL); |
988 |
register_ioport_write(0x398, 2, 1, &PREP_io_write, NULL); |
989 |
/* System control ports */
|
990 |
register_ioport_write(0x0092, 0x1, 1, &PREP_io_800_writeb, NULL); |
991 |
register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, NULL); |
992 |
register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, NULL); |
993 |
/* PCI intack location (0xfef00000 / 0xbffffff0) */
|
994 |
PPC_io_memory = cpu_register_io_memory(0, PPC_ioB_read, PPC_ioB_write);
|
995 |
cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory); |
996 |
// cpu_register_physical_memory(0xFEF00000, 0x4, PPC_io_memory);
|
997 |
prep_NVRAM_init(); |
998 |
|
999 |
PPC_end_init(); |
1000 |
} |