468 lines
14 KiB
C
468 lines
14 KiB
C
/*
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* ARM RealView Baseboard System emulation.
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*
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* Copyright (c) 2006-2007 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licensed under the GPL.
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*/
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#include "sysbus.h"
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#include "arm-misc.h"
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#include "primecell.h"
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#include "devices.h"
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#include "pci.h"
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#include "usb-ohci.h"
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#include "net.h"
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#include "sysemu.h"
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#include "boards.h"
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#include "bitbang_i2c.h"
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#include "blockdev.h"
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#define SMP_BOOT_ADDR 0xe0000000
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typedef struct {
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SysBusDevice busdev;
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bitbang_i2c_interface *bitbang;
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int out;
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int in;
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} RealViewI2CState;
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static uint32_t realview_i2c_read(void *opaque, target_phys_addr_t offset)
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{
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RealViewI2CState *s = (RealViewI2CState *)opaque;
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if (offset == 0) {
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return (s->out & 1) | (s->in << 1);
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} else {
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hw_error("realview_i2c_read: Bad offset 0x%x\n", (int)offset);
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return -1;
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}
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}
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static void realview_i2c_write(void *opaque, target_phys_addr_t offset,
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uint32_t value)
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{
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RealViewI2CState *s = (RealViewI2CState *)opaque;
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switch (offset) {
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case 0:
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s->out |= value & 3;
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break;
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case 4:
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s->out &= ~value;
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break;
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default:
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hw_error("realview_i2c_write: Bad offset 0x%x\n", (int)offset);
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}
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bitbang_i2c_set(s->bitbang, BITBANG_I2C_SCL, (s->out & 1) != 0);
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s->in = bitbang_i2c_set(s->bitbang, BITBANG_I2C_SDA, (s->out & 2) != 0);
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}
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static CPUReadMemoryFunc * const realview_i2c_readfn[] = {
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realview_i2c_read,
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realview_i2c_read,
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realview_i2c_read
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};
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static CPUWriteMemoryFunc * const realview_i2c_writefn[] = {
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realview_i2c_write,
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realview_i2c_write,
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realview_i2c_write
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};
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static int realview_i2c_init(SysBusDevice *dev)
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{
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RealViewI2CState *s = FROM_SYSBUS(RealViewI2CState, dev);
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i2c_bus *bus;
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int iomemtype;
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bus = i2c_init_bus(&dev->qdev, "i2c");
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s->bitbang = bitbang_i2c_init(bus);
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iomemtype = cpu_register_io_memory(realview_i2c_readfn,
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realview_i2c_writefn, s,
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DEVICE_NATIVE_ENDIAN);
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sysbus_init_mmio(dev, 0x1000, iomemtype);
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return 0;
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}
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static SysBusDeviceInfo realview_i2c_info = {
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.init = realview_i2c_init,
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.qdev.name = "realview_i2c",
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.qdev.size = sizeof(RealViewI2CState),
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};
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static void realview_register_devices(void)
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{
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sysbus_register_withprop(&realview_i2c_info);
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}
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/* Board init. */
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static struct arm_boot_info realview_binfo = {
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.smp_loader_start = SMP_BOOT_ADDR,
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};
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/* The following two lists must be consistent. */
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enum realview_board_type {
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BOARD_EB,
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BOARD_EB_MPCORE,
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BOARD_PB_A8,
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BOARD_PBX_A9,
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};
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static const int realview_board_id[] = {
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0x33b,
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0x33b,
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0x769,
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0x76d
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};
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static void realview_init(ram_addr_t ram_size,
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const char *boot_device,
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const char *kernel_filename, const char *kernel_cmdline,
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const char *initrd_filename, const char *cpu_model,
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enum realview_board_type board_type)
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{
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CPUState *env = NULL;
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ram_addr_t ram_offset;
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DeviceState *dev, *sysctl, *gpio2;
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SysBusDevice *busdev;
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qemu_irq *irqp;
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qemu_irq pic[64];
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qemu_irq mmc_irq[2];
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PCIBus *pci_bus;
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NICInfo *nd;
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i2c_bus *i2c;
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int n;
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int done_nic = 0;
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qemu_irq cpu_irq[4];
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int is_mpcore = 0;
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int is_pb = 0;
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uint32_t proc_id = 0;
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uint32_t sys_id;
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ram_addr_t low_ram_size;
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switch (board_type) {
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case BOARD_EB:
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break;
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case BOARD_EB_MPCORE:
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is_mpcore = 1;
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break;
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case BOARD_PB_A8:
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is_pb = 1;
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break;
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case BOARD_PBX_A9:
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is_mpcore = 1;
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is_pb = 1;
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break;
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}
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for (n = 0; n < smp_cpus; n++) {
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env = cpu_init(cpu_model);
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if (!env) {
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fprintf(stderr, "Unable to find CPU definition\n");
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exit(1);
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}
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irqp = arm_pic_init_cpu(env);
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cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
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}
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if (arm_feature(env, ARM_FEATURE_V7)) {
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if (is_mpcore) {
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proc_id = 0x0c000000;
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} else {
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proc_id = 0x0e000000;
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}
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} else if (arm_feature(env, ARM_FEATURE_V6K)) {
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proc_id = 0x06000000;
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} else if (arm_feature(env, ARM_FEATURE_V6)) {
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proc_id = 0x04000000;
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} else {
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proc_id = 0x02000000;
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}
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if (is_pb && ram_size > 0x20000000) {
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/* Core tile RAM. */
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low_ram_size = ram_size - 0x20000000;
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ram_size = 0x20000000;
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ram_offset = qemu_ram_alloc(NULL, "realview.lowmem", low_ram_size);
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cpu_register_physical_memory(0x20000000, low_ram_size,
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ram_offset | IO_MEM_RAM);
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}
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ram_offset = qemu_ram_alloc(NULL, "realview.highmem", ram_size);
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low_ram_size = ram_size;
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if (low_ram_size > 0x10000000)
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low_ram_size = 0x10000000;
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/* SDRAM at address zero. */
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cpu_register_physical_memory(0, low_ram_size, ram_offset | IO_MEM_RAM);
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if (is_pb) {
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/* And again at a high address. */
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cpu_register_physical_memory(0x70000000, ram_size,
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ram_offset | IO_MEM_RAM);
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} else {
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ram_size = low_ram_size;
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}
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sys_id = is_pb ? 0x01780500 : 0xc1400400;
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sysctl = qdev_create(NULL, "realview_sysctl");
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qdev_prop_set_uint32(sysctl, "sys_id", sys_id);
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qdev_init_nofail(sysctl);
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qdev_prop_set_uint32(sysctl, "proc_id", proc_id);
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sysbus_mmio_map(sysbus_from_qdev(sysctl), 0, 0x10000000);
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if (is_mpcore) {
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dev = qdev_create(NULL, is_pb ? "a9mpcore_priv": "realview_mpcore");
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qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
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qdev_init_nofail(dev);
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busdev = sysbus_from_qdev(dev);
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if (is_pb) {
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realview_binfo.smp_priv_base = 0x1f000000;
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} else {
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realview_binfo.smp_priv_base = 0x10100000;
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}
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sysbus_mmio_map(busdev, 0, realview_binfo.smp_priv_base);
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for (n = 0; n < smp_cpus; n++) {
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sysbus_connect_irq(busdev, n, cpu_irq[n]);
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}
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} else {
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uint32_t gic_addr = is_pb ? 0x1e000000 : 0x10040000;
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/* For now just create the nIRQ GIC, and ignore the others. */
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dev = sysbus_create_simple("realview_gic", gic_addr, cpu_irq[0]);
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}
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for (n = 0; n < 64; n++) {
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pic[n] = qdev_get_gpio_in(dev, n);
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}
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sysbus_create_simple("pl050_keyboard", 0x10006000, pic[20]);
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sysbus_create_simple("pl050_mouse", 0x10007000, pic[21]);
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sysbus_create_simple("pl011", 0x10009000, pic[12]);
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sysbus_create_simple("pl011", 0x1000a000, pic[13]);
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sysbus_create_simple("pl011", 0x1000b000, pic[14]);
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sysbus_create_simple("pl011", 0x1000c000, pic[15]);
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/* DMA controller is optional, apparently. */
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sysbus_create_simple("pl081", 0x10030000, pic[24]);
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sysbus_create_simple("sp804", 0x10011000, pic[4]);
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sysbus_create_simple("sp804", 0x10012000, pic[5]);
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sysbus_create_simple("pl061", 0x10013000, pic[6]);
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sysbus_create_simple("pl061", 0x10014000, pic[7]);
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gpio2 = sysbus_create_simple("pl061", 0x10015000, pic[8]);
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sysbus_create_simple("pl110_versatile", 0x10020000, pic[23]);
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dev = sysbus_create_varargs("pl181", 0x10005000, pic[17], pic[18], NULL);
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/* Wire up MMC card detect and read-only signals. These have
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* to go to both the PL061 GPIO and the sysctl register.
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* Note that the PL181 orders these lines (readonly,inserted)
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* and the PL061 has them the other way about. Also the card
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* detect line is inverted.
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*/
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mmc_irq[0] = qemu_irq_split(
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qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_WPROT),
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qdev_get_gpio_in(gpio2, 1));
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mmc_irq[1] = qemu_irq_split(
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qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_CARDIN),
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qemu_irq_invert(qdev_get_gpio_in(gpio2, 0)));
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qdev_connect_gpio_out(dev, 0, mmc_irq[0]);
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qdev_connect_gpio_out(dev, 1, mmc_irq[1]);
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sysbus_create_simple("pl031", 0x10017000, pic[10]);
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if (!is_pb) {
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dev = sysbus_create_varargs("realview_pci", 0x60000000,
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pic[48], pic[49], pic[50], pic[51], NULL);
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pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
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if (usb_enabled) {
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usb_ohci_init_pci(pci_bus, -1);
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}
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n = drive_get_max_bus(IF_SCSI);
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while (n >= 0) {
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pci_create_simple(pci_bus, -1, "lsi53c895a");
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n--;
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}
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}
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for(n = 0; n < nb_nics; n++) {
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nd = &nd_table[n];
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if (!done_nic && (!nd->model ||
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strcmp(nd->model, is_pb ? "lan9118" : "smc91c111") == 0)) {
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if (is_pb) {
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lan9118_init(nd, 0x4e000000, pic[28]);
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} else {
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smc91c111_init(nd, 0x4e000000, pic[28]);
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}
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done_nic = 1;
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} else {
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pci_nic_init_nofail(nd, "rtl8139", NULL);
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}
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}
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dev = sysbus_create_simple("realview_i2c", 0x10002000, NULL);
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i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
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i2c_create_slave(i2c, "ds1338", 0x68);
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/* Memory map for RealView Emulation Baseboard: */
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/* 0x10000000 System registers. */
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/* 0x10001000 System controller. */
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/* 0x10002000 Two-Wire Serial Bus. */
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/* 0x10003000 Reserved. */
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/* 0x10004000 AACI. */
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/* 0x10005000 MCI. */
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/* 0x10006000 KMI0. */
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/* 0x10007000 KMI1. */
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/* 0x10008000 Character LCD. (EB) */
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/* 0x10009000 UART0. */
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/* 0x1000a000 UART1. */
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/* 0x1000b000 UART2. */
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/* 0x1000c000 UART3. */
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/* 0x1000d000 SSPI. */
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/* 0x1000e000 SCI. */
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/* 0x1000f000 Reserved. */
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/* 0x10010000 Watchdog. */
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/* 0x10011000 Timer 0+1. */
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/* 0x10012000 Timer 2+3. */
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/* 0x10013000 GPIO 0. */
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/* 0x10014000 GPIO 1. */
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/* 0x10015000 GPIO 2. */
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/* 0x10002000 Two-Wire Serial Bus - DVI. (PB) */
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/* 0x10017000 RTC. */
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/* 0x10018000 DMC. */
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/* 0x10019000 PCI controller config. */
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/* 0x10020000 CLCD. */
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/* 0x10030000 DMA Controller. */
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/* 0x10040000 GIC1. (EB) */
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/* 0x10050000 GIC2. (EB) */
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/* 0x10060000 GIC3. (EB) */
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/* 0x10070000 GIC4. (EB) */
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/* 0x10080000 SMC. */
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/* 0x1e000000 GIC1. (PB) */
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/* 0x1e001000 GIC2. (PB) */
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/* 0x1e002000 GIC3. (PB) */
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/* 0x1e003000 GIC4. (PB) */
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/* 0x40000000 NOR flash. */
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/* 0x44000000 DoC flash. */
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/* 0x48000000 SRAM. */
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/* 0x4c000000 Configuration flash. */
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/* 0x4e000000 Ethernet. */
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/* 0x4f000000 USB. */
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/* 0x50000000 PISMO. */
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/* 0x54000000 PISMO. */
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/* 0x58000000 PISMO. */
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/* 0x5c000000 PISMO. */
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/* 0x60000000 PCI. */
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/* 0x61000000 PCI Self Config. */
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/* 0x62000000 PCI Config. */
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/* 0x63000000 PCI IO. */
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/* 0x64000000 PCI mem 0. */
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/* 0x68000000 PCI mem 1. */
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/* 0x6c000000 PCI mem 2. */
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/* ??? Hack to map an additional page of ram for the secondary CPU
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startup code. I guess this works on real hardware because the
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BootROM happens to be in ROM/flash or in memory that isn't clobbered
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until after Linux boots the secondary CPUs. */
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ram_offset = qemu_ram_alloc(NULL, "realview.hack", 0x1000);
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cpu_register_physical_memory(SMP_BOOT_ADDR, 0x1000,
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ram_offset | IO_MEM_RAM);
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realview_binfo.ram_size = ram_size;
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realview_binfo.kernel_filename = kernel_filename;
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realview_binfo.kernel_cmdline = kernel_cmdline;
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realview_binfo.initrd_filename = initrd_filename;
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realview_binfo.nb_cpus = smp_cpus;
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realview_binfo.board_id = realview_board_id[board_type];
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realview_binfo.loader_start = (board_type == BOARD_PB_A8 ? 0x70000000 : 0);
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arm_load_kernel(first_cpu, &realview_binfo);
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}
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static void realview_eb_init(ram_addr_t ram_size,
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const char *boot_device,
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const char *kernel_filename, const char *kernel_cmdline,
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const char *initrd_filename, const char *cpu_model)
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{
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if (!cpu_model) {
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cpu_model = "arm926";
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}
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realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
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initrd_filename, cpu_model, BOARD_EB);
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}
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static void realview_eb_mpcore_init(ram_addr_t ram_size,
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const char *boot_device,
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const char *kernel_filename, const char *kernel_cmdline,
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const char *initrd_filename, const char *cpu_model)
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{
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if (!cpu_model) {
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cpu_model = "arm11mpcore";
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}
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realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
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initrd_filename, cpu_model, BOARD_EB_MPCORE);
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}
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static void realview_pb_a8_init(ram_addr_t ram_size,
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const char *boot_device,
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const char *kernel_filename, const char *kernel_cmdline,
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const char *initrd_filename, const char *cpu_model)
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{
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if (!cpu_model) {
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cpu_model = "cortex-a8";
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}
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realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
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initrd_filename, cpu_model, BOARD_PB_A8);
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}
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static void realview_pbx_a9_init(ram_addr_t ram_size,
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const char *boot_device,
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const char *kernel_filename, const char *kernel_cmdline,
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const char *initrd_filename, const char *cpu_model)
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{
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if (!cpu_model) {
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cpu_model = "cortex-a9";
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}
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realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
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initrd_filename, cpu_model, BOARD_PBX_A9);
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}
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static QEMUMachine realview_eb_machine = {
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.name = "realview-eb",
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.desc = "ARM RealView Emulation Baseboard (ARM926EJ-S)",
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.init = realview_eb_init,
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.use_scsi = 1,
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};
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static QEMUMachine realview_eb_mpcore_machine = {
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.name = "realview-eb-mpcore",
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.desc = "ARM RealView Emulation Baseboard (ARM11MPCore)",
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.init = realview_eb_mpcore_init,
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.use_scsi = 1,
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.max_cpus = 4,
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};
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static QEMUMachine realview_pb_a8_machine = {
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.name = "realview-pb-a8",
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.desc = "ARM RealView Platform Baseboard for Cortex-A8",
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.init = realview_pb_a8_init,
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};
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static QEMUMachine realview_pbx_a9_machine = {
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.name = "realview-pbx-a9",
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.desc = "ARM RealView Platform Baseboard Explore for Cortex-A9",
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.init = realview_pbx_a9_init,
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.use_scsi = 1,
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.max_cpus = 4,
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};
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static void realview_machine_init(void)
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{
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qemu_register_machine(&realview_eb_machine);
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qemu_register_machine(&realview_eb_mpcore_machine);
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qemu_register_machine(&realview_pb_a8_machine);
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qemu_register_machine(&realview_pbx_a9_machine);
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}
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machine_init(realview_machine_init);
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device_init(realview_register_devices)
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