374 lines
11 KiB
C
374 lines
11 KiB
C
/*
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* Renesas SH7751R R2D-PLUS emulation
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*
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* Copyright (c) 2007 Magnus Damm
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* Copyright (c) 2008 Paul Mundt
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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 "qemu/osdep.h"
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#include "qemu/units.h"
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#include "qapi/error.h"
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#include "cpu.h"
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#include "hw/sysbus.h"
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#include "hw/sh4/sh.h"
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#include "sysemu/reset.h"
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#include "sysemu/runstate.h"
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#include "sysemu/sysemu.h"
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#include "hw/boards.h"
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#include "hw/pci/pci.h"
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#include "hw/qdev-properties.h"
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#include "net/net.h"
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#include "sh7750_regs.h"
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#include "hw/ide.h"
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#include "hw/irq.h"
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#include "hw/loader.h"
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#include "hw/usb.h"
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#include "hw/block/flash.h"
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#define FLASH_BASE 0x00000000
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#define FLASH_SIZE (16 * MiB)
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#define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */
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#define SDRAM_SIZE 0x04000000
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#define SM501_VRAM_SIZE 0x800000
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#define BOOT_PARAMS_OFFSET 0x0010000
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/* CONFIG_BOOT_LINK_OFFSET of Linux kernel */
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#define LINUX_LOAD_OFFSET 0x0800000
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#define INITRD_LOAD_OFFSET 0x1800000
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#define PA_IRLMSK 0x00
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#define PA_POWOFF 0x30
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#define PA_VERREG 0x32
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#define PA_OUTPORT 0x36
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typedef struct {
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uint16_t bcr;
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uint16_t irlmsk;
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uint16_t irlmon;
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uint16_t cfctl;
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uint16_t cfpow;
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uint16_t dispctl;
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uint16_t sdmpow;
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uint16_t rtcce;
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uint16_t pcicd;
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uint16_t voyagerrts;
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uint16_t cfrst;
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uint16_t admrts;
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uint16_t extrst;
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uint16_t cfcdintclr;
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uint16_t keyctlclr;
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uint16_t pad0;
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uint16_t pad1;
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uint16_t verreg;
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uint16_t inport;
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uint16_t outport;
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uint16_t bverreg;
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/* output pin */
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qemu_irq irl;
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MemoryRegion iomem;
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} r2d_fpga_t;
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enum r2d_fpga_irq {
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PCI_INTD, CF_IDE, CF_CD, PCI_INTC, SM501, KEY, RTC_A, RTC_T,
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SDCARD, PCI_INTA, PCI_INTB, EXT, TP,
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NR_IRQS
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};
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static const struct { short irl; uint16_t msk; } irqtab[NR_IRQS] = {
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[CF_IDE] = { 1, 1<<9 },
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[CF_CD] = { 2, 1<<8 },
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[PCI_INTA] = { 9, 1<<14 },
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[PCI_INTB] = { 10, 1<<13 },
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[PCI_INTC] = { 3, 1<<12 },
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[PCI_INTD] = { 0, 1<<11 },
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[SM501] = { 4, 1<<10 },
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[KEY] = { 5, 1<<6 },
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[RTC_A] = { 6, 1<<5 },
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[RTC_T] = { 7, 1<<4 },
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[SDCARD] = { 8, 1<<7 },
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[EXT] = { 11, 1<<0 },
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[TP] = { 12, 1<<15 },
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};
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static void update_irl(r2d_fpga_t *fpga)
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{
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int i, irl = 15;
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for (i = 0; i < NR_IRQS; i++)
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if (fpga->irlmon & fpga->irlmsk & irqtab[i].msk)
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if (irqtab[i].irl < irl)
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irl = irqtab[i].irl;
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qemu_set_irq(fpga->irl, irl ^ 15);
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}
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static void r2d_fpga_irq_set(void *opaque, int n, int level)
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{
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r2d_fpga_t *fpga = opaque;
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if (level)
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fpga->irlmon |= irqtab[n].msk;
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else
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fpga->irlmon &= ~irqtab[n].msk;
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update_irl(fpga);
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}
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static uint64_t r2d_fpga_read(void *opaque, hwaddr addr, unsigned int size)
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{
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r2d_fpga_t *s = opaque;
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switch (addr) {
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case PA_IRLMSK:
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return s->irlmsk;
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case PA_OUTPORT:
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return s->outport;
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case PA_POWOFF:
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return 0x00;
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case PA_VERREG:
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return 0x10;
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}
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return 0;
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}
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static void
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r2d_fpga_write(void *opaque, hwaddr addr, uint64_t value, unsigned int size)
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{
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r2d_fpga_t *s = opaque;
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switch (addr) {
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case PA_IRLMSK:
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s->irlmsk = value;
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update_irl(s);
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break;
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case PA_OUTPORT:
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s->outport = value;
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break;
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case PA_POWOFF:
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if (value & 1) {
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qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
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}
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break;
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case PA_VERREG:
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/* Discard writes */
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break;
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}
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}
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static const MemoryRegionOps r2d_fpga_ops = {
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.read = r2d_fpga_read,
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.write = r2d_fpga_write,
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.impl.min_access_size = 2,
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.impl.max_access_size = 2,
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.endianness = DEVICE_NATIVE_ENDIAN,
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};
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static qemu_irq *r2d_fpga_init(MemoryRegion *sysmem,
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hwaddr base, qemu_irq irl)
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{
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r2d_fpga_t *s;
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s = g_malloc0(sizeof(r2d_fpga_t));
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s->irl = irl;
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memory_region_init_io(&s->iomem, NULL, &r2d_fpga_ops, s, "r2d-fpga", 0x40);
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memory_region_add_subregion(sysmem, base, &s->iomem);
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return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS);
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}
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typedef struct ResetData {
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SuperHCPU *cpu;
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uint32_t vector;
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} ResetData;
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static void main_cpu_reset(void *opaque)
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{
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ResetData *s = (ResetData *)opaque;
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CPUSH4State *env = &s->cpu->env;
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cpu_reset(CPU(s->cpu));
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env->pc = s->vector;
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}
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static struct QEMU_PACKED
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{
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int mount_root_rdonly;
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int ramdisk_flags;
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int orig_root_dev;
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int loader_type;
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int initrd_start;
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int initrd_size;
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char pad[232];
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char kernel_cmdline[256] QEMU_NONSTRING;
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} boot_params;
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static void r2d_init(MachineState *machine)
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{
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const char *kernel_filename = machine->kernel_filename;
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const char *kernel_cmdline = machine->kernel_cmdline;
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const char *initrd_filename = machine->initrd_filename;
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SuperHCPU *cpu;
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CPUSH4State *env;
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ResetData *reset_info;
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struct SH7750State *s;
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MemoryRegion *sdram = g_new(MemoryRegion, 1);
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qemu_irq *irq;
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DriveInfo *dinfo;
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int i;
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DeviceState *dev;
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SysBusDevice *busdev;
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MemoryRegion *address_space_mem = get_system_memory();
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PCIBus *pci_bus;
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cpu = SUPERH_CPU(cpu_create(machine->cpu_type));
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env = &cpu->env;
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reset_info = g_malloc0(sizeof(ResetData));
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reset_info->cpu = cpu;
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reset_info->vector = env->pc;
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qemu_register_reset(main_cpu_reset, reset_info);
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/* Allocate memory space */
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memory_region_init_ram(sdram, NULL, "r2d.sdram", SDRAM_SIZE, &error_fatal);
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memory_region_add_subregion(address_space_mem, SDRAM_BASE, sdram);
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/* Register peripherals */
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s = sh7750_init(cpu, address_space_mem);
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irq = r2d_fpga_init(address_space_mem, 0x04000000, sh7750_irl(s));
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dev = qdev_new("sh_pci");
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busdev = SYS_BUS_DEVICE(dev);
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sysbus_realize_and_unref(busdev, &error_fatal);
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pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci"));
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sysbus_mmio_map(busdev, 0, P4ADDR(0x1e200000));
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sysbus_mmio_map(busdev, 1, A7ADDR(0x1e200000));
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sysbus_connect_irq(busdev, 0, irq[PCI_INTA]);
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sysbus_connect_irq(busdev, 1, irq[PCI_INTB]);
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sysbus_connect_irq(busdev, 2, irq[PCI_INTC]);
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sysbus_connect_irq(busdev, 3, irq[PCI_INTD]);
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dev = qdev_new("sysbus-sm501");
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busdev = SYS_BUS_DEVICE(dev);
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qdev_prop_set_uint32(dev, "vram-size", SM501_VRAM_SIZE);
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qdev_prop_set_uint32(dev, "base", 0x10000000);
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qdev_prop_set_chr(dev, "chardev", serial_hd(2));
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sysbus_realize_and_unref(busdev, &error_fatal);
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sysbus_mmio_map(busdev, 0, 0x10000000);
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sysbus_mmio_map(busdev, 1, 0x13e00000);
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sysbus_connect_irq(busdev, 0, irq[SM501]);
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/* onboard CF (True IDE mode, Master only). */
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dinfo = drive_get(IF_IDE, 0, 0);
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dev = qdev_new("mmio-ide");
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busdev = SYS_BUS_DEVICE(dev);
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sysbus_connect_irq(busdev, 0, irq[CF_IDE]);
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qdev_prop_set_uint32(dev, "shift", 1);
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sysbus_realize_and_unref(busdev, &error_fatal);
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sysbus_mmio_map(busdev, 0, 0x14001000);
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sysbus_mmio_map(busdev, 1, 0x1400080c);
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mmio_ide_init_drives(dev, dinfo, NULL);
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/*
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* Onboard flash memory
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* According to the old board user document in Japanese (under
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* NDA) what is referred to as FROM (Area0) is connected via a
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* 32-bit bus and CS0 to CN8. The docs mention a Cypress
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* S29PL127J60TFI130 chipsset. Per the 'S29PL-J 002-00615
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* Rev. *E' datasheet, it is a 128Mbit NOR parallel flash
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* addressable in words of 16bit.
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*/
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dinfo = drive_get(IF_PFLASH, 0, 0);
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pflash_cfi02_register(0x0, "r2d.flash", FLASH_SIZE,
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dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
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64 * KiB, 1, 2, 0x0001, 0x227e, 0x2220, 0x2200,
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0x555, 0x2aa, 0);
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/* NIC: rtl8139 on-board, and 2 slots. */
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for (i = 0; i < nb_nics; i++)
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pci_nic_init_nofail(&nd_table[i], pci_bus,
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"rtl8139", i==0 ? "2" : NULL);
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/* USB keyboard */
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usb_create_simple(usb_bus_find(-1), "usb-kbd");
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/* Todo: register on board registers */
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memset(&boot_params, 0, sizeof(boot_params));
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if (kernel_filename) {
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int kernel_size;
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kernel_size = load_image_targphys(kernel_filename,
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SDRAM_BASE + LINUX_LOAD_OFFSET,
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INITRD_LOAD_OFFSET - LINUX_LOAD_OFFSET);
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if (kernel_size < 0) {
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fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
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exit(1);
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}
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/* initialization which should be done by firmware */
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address_space_stl(&address_space_memory, SH7750_BCR1, 1 << 3,
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MEMTXATTRS_UNSPECIFIED, NULL); /* cs3 SDRAM */
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address_space_stw(&address_space_memory, SH7750_BCR2, 3 << (3 * 2),
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MEMTXATTRS_UNSPECIFIED, NULL); /* cs3 32bit */
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reset_info->vector = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000; /* Start from P2 area */
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}
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if (initrd_filename) {
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int initrd_size;
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initrd_size = load_image_targphys(initrd_filename,
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SDRAM_BASE + INITRD_LOAD_OFFSET,
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SDRAM_SIZE - INITRD_LOAD_OFFSET);
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if (initrd_size < 0) {
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fprintf(stderr, "qemu: could not load initrd '%s'\n", initrd_filename);
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exit(1);
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}
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/* initialization which should be done by firmware */
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boot_params.loader_type = tswap32(1);
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boot_params.initrd_start = tswap32(INITRD_LOAD_OFFSET);
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boot_params.initrd_size = tswap32(initrd_size);
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}
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if (kernel_cmdline) {
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/* I see no evidence that this .kernel_cmdline buffer requires
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NUL-termination, so using strncpy should be ok. */
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strncpy(boot_params.kernel_cmdline, kernel_cmdline,
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sizeof(boot_params.kernel_cmdline));
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}
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rom_add_blob_fixed("boot_params", &boot_params, sizeof(boot_params),
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SDRAM_BASE + BOOT_PARAMS_OFFSET);
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}
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static void r2d_machine_init(MachineClass *mc)
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{
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mc->desc = "r2d-plus board";
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mc->init = r2d_init;
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mc->block_default_type = IF_IDE;
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mc->default_cpu_type = TYPE_SH7751R_CPU;
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}
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DEFINE_MACHINE("r2d", r2d_machine_init)
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