qemu-e2k/hw/sun4m.c

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/*
* QEMU Sun4m System Emulator
*
* Copyright (c) 2003-2005 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "vl.h"
//#define DEBUG_IRQ
/*
* Sun4m architecture was used in the following machines:
*
* SPARCserver 6xxMP/xx
* SPARCclassic (SPARCclassic Server)(SPARCstation LC) (4/15), SPARCclassic X (4/10)
* SPARCstation LX/ZX (4/30)
* SPARCstation Voyager
* SPARCstation 10/xx, SPARCserver 10/xx
* SPARCstation 5, SPARCserver 5
* SPARCstation 20/xx, SPARCserver 20
* SPARCstation 4
*
* See for example: http://www.sunhelp.org/faq/sunref1.html
*/
#ifdef DEBUG_IRQ
#define DPRINTF(fmt, args...) \
do { printf("CPUIRQ: " fmt , ##args); } while (0)
#else
#define DPRINTF(fmt, args...)
#endif
#define KERNEL_LOAD_ADDR 0x00004000
#define CMDLINE_ADDR 0x007ff000
#define INITRD_LOAD_ADDR 0x00800000
#define PROM_SIZE_MAX (256 * 1024)
#define PROM_ADDR 0xffd00000
#define PROM_FILENAME "openbios-sparc32"
#define MAX_CPUS 16
#define MAX_PILS 16
struct hwdef {
target_phys_addr_t iommu_base, slavio_base;
target_phys_addr_t intctl_base, counter_base, nvram_base, ms_kb_base;
target_phys_addr_t serial_base, fd_base;
target_phys_addr_t dma_base, esp_base, le_base;
target_phys_addr_t tcx_base, cs_base, power_base;
long vram_size, nvram_size;
// IRQ numbers are not PIL ones, but master interrupt controller register
// bit numbers
int intctl_g_intr, esp_irq, le_irq, clock_irq, clock1_irq;
int ser_irq, ms_kb_irq, fd_irq, me_irq, cs_irq;
int machine_id; // For NVRAM
uint32_t intbit_to_level[32];
};
/* TSC handling */
uint64_t cpu_get_tsc()
{
return qemu_get_clock(vm_clock);
}
int DMA_get_channel_mode (int nchan)
{
return 0;
}
int DMA_read_memory (int nchan, void *buf, int pos, int size)
{
return 0;
}
int DMA_write_memory (int nchan, void *buf, int pos, int size)
{
return 0;
}
void DMA_hold_DREQ (int nchan) {}
void DMA_release_DREQ (int nchan) {}
void DMA_schedule(int nchan) {}
void DMA_run (void) {}
void DMA_init (int high_page_enable) {}
void DMA_register_channel (int nchan,
DMA_transfer_handler transfer_handler,
void *opaque)
{
}
static void nvram_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value)
{
m48t59_write(nvram, addr++, (value >> 8) & 0xff);
m48t59_write(nvram, addr++, value & 0xff);
}
static void nvram_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value)
{
m48t59_write(nvram, addr++, value >> 24);
m48t59_write(nvram, addr++, (value >> 16) & 0xff);
m48t59_write(nvram, addr++, (value >> 8) & 0xff);
m48t59_write(nvram, addr++, value & 0xff);
}
static void nvram_set_string (m48t59_t *nvram, uint32_t addr,
const unsigned char *str, uint32_t max)
{
unsigned int i;
for (i = 0; i < max && str[i] != '\0'; i++) {
m48t59_write(nvram, addr + i, str[i]);
}
m48t59_write(nvram, addr + max - 1, '\0');
}
static uint32_t nvram_set_var (m48t59_t *nvram, uint32_t addr,
const unsigned char *str)
{
uint32_t len;
len = strlen(str) + 1;
nvram_set_string(nvram, addr, str, len);
return addr + len;
}
static void nvram_finish_partition (m48t59_t *nvram, uint32_t start,
uint32_t end)
{
unsigned int i, sum;
// Length divided by 16
m48t59_write(nvram, start + 2, ((end - start) >> 12) & 0xff);
m48t59_write(nvram, start + 3, ((end - start) >> 4) & 0xff);
// Checksum
sum = m48t59_read(nvram, start);
for (i = 0; i < 14; i++) {
sum += m48t59_read(nvram, start + 2 + i);
sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
}
m48t59_write(nvram, start + 1, sum & 0xff);
}
extern int nographic;
static void nvram_init(m48t59_t *nvram, uint8_t *macaddr, const char *cmdline,
int boot_device, uint32_t RAM_size,
uint32_t kernel_size,
int width, int height, int depth,
int machine_id)
{
unsigned char tmp = 0;
unsigned int i, j;
uint32_t start, end;
// Try to match PPC NVRAM
nvram_set_string(nvram, 0x00, "QEMU_BIOS", 16);
nvram_set_lword(nvram, 0x10, 0x00000001); /* structure v1 */
// NVRAM_size, arch not applicable
m48t59_write(nvram, 0x2D, smp_cpus & 0xff);
m48t59_write(nvram, 0x2E, 0);
m48t59_write(nvram, 0x2F, nographic & 0xff);
nvram_set_lword(nvram, 0x30, RAM_size);
m48t59_write(nvram, 0x34, boot_device & 0xff);
nvram_set_lword(nvram, 0x38, KERNEL_LOAD_ADDR);
nvram_set_lword(nvram, 0x3C, kernel_size);
if (cmdline) {
strcpy(phys_ram_base + CMDLINE_ADDR, cmdline);
nvram_set_lword(nvram, 0x40, CMDLINE_ADDR);
nvram_set_lword(nvram, 0x44, strlen(cmdline));
}
// initrd_image, initrd_size passed differently
nvram_set_word(nvram, 0x54, width);
nvram_set_word(nvram, 0x56, height);
nvram_set_word(nvram, 0x58, depth);
// OpenBIOS nvram variables
// Variable partition
start = 252;
m48t59_write(nvram, start, 0x70);
nvram_set_string(nvram, start + 4, "system", 12);
end = start + 16;
for (i = 0; i < nb_prom_envs; i++)
end = nvram_set_var(nvram, end, prom_envs[i]);
m48t59_write(nvram, end++ , 0);
end = start + ((end - start + 15) & ~15);
nvram_finish_partition(nvram, start, end);
// free partition
start = end;
m48t59_write(nvram, start, 0x7f);
nvram_set_string(nvram, start + 4, "free", 12);
end = 0x1fd0;
nvram_finish_partition(nvram, start, end);
// Sun4m specific use
start = i = 0x1fd8;
m48t59_write(nvram, i++, 0x01);
m48t59_write(nvram, i++, machine_id);
j = 0;
m48t59_write(nvram, i++, macaddr[j++]);
m48t59_write(nvram, i++, macaddr[j++]);
m48t59_write(nvram, i++, macaddr[j++]);
m48t59_write(nvram, i++, macaddr[j++]);
m48t59_write(nvram, i++, macaddr[j++]);
m48t59_write(nvram, i, macaddr[j]);
/* Calculate checksum */
for (i = start; i < start + 15; i++) {
tmp ^= m48t59_read(nvram, i);
}
m48t59_write(nvram, start + 15, tmp);
}
static void *slavio_intctl;
void pic_info()
{
slavio_pic_info(slavio_intctl);
}
void irq_info()
{
slavio_irq_info(slavio_intctl);
}
void cpu_check_irqs(CPUState *env)
{
if (env->pil_in && (env->interrupt_index == 0 ||
(env->interrupt_index & ~15) == TT_EXTINT)) {
unsigned int i;
for (i = 15; i > 0; i--) {
if (env->pil_in & (1 << i)) {
int old_interrupt = env->interrupt_index;
env->interrupt_index = TT_EXTINT | i;
if (old_interrupt != env->interrupt_index)
cpu_interrupt(env, CPU_INTERRUPT_HARD);
break;
}
}
} else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) {
env->interrupt_index = 0;
cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
}
}
static void cpu_set_irq(void *opaque, int irq, int level)
{
CPUState *env = opaque;
if (level) {
DPRINTF("Raise CPU IRQ %d\n", irq);
env->halted = 0;
env->pil_in |= 1 << irq;
cpu_check_irqs(env);
} else {
DPRINTF("Lower CPU IRQ %d\n", irq);
env->pil_in &= ~(1 << irq);
cpu_check_irqs(env);
}
}
static void dummy_cpu_set_irq(void *opaque, int irq, int level)
{
}
static void *slavio_misc;
void qemu_system_powerdown(void)
{
slavio_set_power_fail(slavio_misc, 1);
}
static void main_cpu_reset(void *opaque)
{
CPUState *env = opaque;
cpu_reset(env);
env->halted = 0;
}
static void secondary_cpu_reset(void *opaque)
{
CPUState *env = opaque;
cpu_reset(env);
env->halted = 1;
}
static void *sun4m_hw_init(const struct hwdef *hwdef, int RAM_size,
DisplayState *ds, const char *cpu_model)
{
CPUState *env, *envs[MAX_CPUS];
unsigned int i;
void *iommu, *espdma, *ledma, *main_esp, *nvram;
const sparc_def_t *def;
qemu_irq *cpu_irqs[MAX_CPUS], *slavio_irq, *slavio_cpu_irq,
*espdma_irq, *ledma_irq;
/* init CPUs */
sparc_find_by_name(cpu_model, &def);
if (def == NULL) {
fprintf(stderr, "Unable to find Sparc CPU definition\n");
exit(1);
}
for(i = 0; i < smp_cpus; i++) {
env = cpu_init();
cpu_sparc_register(env, def);
envs[i] = env;
if (i == 0) {
qemu_register_reset(main_cpu_reset, env);
} else {
qemu_register_reset(secondary_cpu_reset, env);
env->halted = 1;
}
register_savevm("cpu", i, 3, cpu_save, cpu_load, env);
cpu_irqs[i] = qemu_allocate_irqs(cpu_set_irq, envs[i], MAX_PILS);
}
for (i = smp_cpus; i < MAX_CPUS; i++)
cpu_irqs[i] = qemu_allocate_irqs(dummy_cpu_set_irq, NULL, MAX_PILS);
/* allocate RAM */
cpu_register_physical_memory(0, RAM_size, 0);
iommu = iommu_init(hwdef->iommu_base);
slavio_intctl = slavio_intctl_init(hwdef->intctl_base,
hwdef->intctl_base + 0x10000ULL,
&hwdef->intbit_to_level[0],
&slavio_irq, &slavio_cpu_irq,
cpu_irqs,
hwdef->clock_irq);
espdma = sparc32_dma_init(hwdef->dma_base, slavio_irq[hwdef->esp_irq],
iommu, &espdma_irq);
ledma = sparc32_dma_init(hwdef->dma_base + 16ULL,
slavio_irq[hwdef->le_irq], iommu, &ledma_irq);
if (graphic_depth != 8 && graphic_depth != 24) {
fprintf(stderr, "qemu: Unsupported depth: %d\n", graphic_depth);
exit (1);
}
tcx_init(ds, hwdef->tcx_base, phys_ram_base + RAM_size, RAM_size,
hwdef->vram_size, graphic_width, graphic_height, graphic_depth);
if (nd_table[0].model == NULL
|| strcmp(nd_table[0].model, "lance") == 0) {
lance_init(&nd_table[0], hwdef->le_base, ledma, *ledma_irq);
} else if (strcmp(nd_table[0].model, "?") == 0) {
fprintf(stderr, "qemu: Supported NICs: lance\n");
exit (1);
} else {
fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd_table[0].model);
exit (1);
}
nvram = m48t59_init(slavio_irq[0], hwdef->nvram_base, 0,
hwdef->nvram_size, 8);
for (i = 0; i < MAX_CPUS; i++) {
slavio_timer_init(hwdef->counter_base +
(target_phys_addr_t)(i * TARGET_PAGE_SIZE),
slavio_cpu_irq[i], 0);
}
slavio_timer_init(hwdef->counter_base + 0x10000ULL,
slavio_irq[hwdef->clock1_irq], 2);
slavio_serial_ms_kbd_init(hwdef->ms_kb_base, slavio_irq[hwdef->ms_kb_irq]);
// Slavio TTYA (base+4, Linux ttyS0) is the first Qemu serial device
// Slavio TTYB (base+0, Linux ttyS1) is the second Qemu serial device
slavio_serial_init(hwdef->serial_base, slavio_irq[hwdef->ser_irq],
serial_hds[1], serial_hds[0]);
fdctrl_init(slavio_irq[hwdef->fd_irq], 0, 1, hwdef->fd_base, fd_table);
main_esp = esp_init(bs_table, hwdef->esp_base, espdma, *espdma_irq);
for (i = 0; i < MAX_DISKS; i++) {
if (bs_table[i]) {
esp_scsi_attach(main_esp, bs_table[i], i);
}
}
slavio_misc = slavio_misc_init(hwdef->slavio_base, hwdef->power_base,
slavio_irq[hwdef->me_irq]);
if (hwdef->cs_base != (target_phys_addr_t)-1)
cs_init(hwdef->cs_base, hwdef->cs_irq, slavio_intctl);
return nvram;
}
static void sun4m_load_kernel(long vram_size, int RAM_size, int boot_device,
const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename,
int machine_id,
void *nvram)
{
int ret, linux_boot;
char buf[1024];
unsigned int i;
long prom_offset, initrd_size, kernel_size;
linux_boot = (kernel_filename != NULL);
prom_offset = RAM_size + vram_size;
cpu_register_physical_memory(PROM_ADDR,
(PROM_SIZE_MAX + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK,
prom_offset | IO_MEM_ROM);
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, PROM_FILENAME);
ret = load_elf(buf, 0, NULL, NULL, NULL);
if (ret < 0) {
fprintf(stderr, "qemu: could not load prom '%s'\n",
buf);
exit(1);
}
kernel_size = 0;
if (linux_boot) {
kernel_size = load_elf(kernel_filename, -0xf0000000, NULL, NULL, NULL);
if (kernel_size < 0)
kernel_size = load_aout(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
if (kernel_size < 0)
kernel_size = load_image(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
}
/* load initrd */
initrd_size = 0;
if (initrd_filename) {
initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
if (initrd_size < 0) {
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
initrd_filename);
exit(1);
}
}
if (initrd_size > 0) {
for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {
if (ldl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i)
== 0x48647253) { // HdrS
stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 16, INITRD_LOAD_ADDR);
stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 20, initrd_size);
break;
}
}
}
}
nvram_init(nvram, (uint8_t *)&nd_table[0].macaddr, kernel_cmdline,
boot_device, RAM_size, kernel_size, graphic_width,
graphic_height, graphic_depth, machine_id);
}
static const struct hwdef hwdefs[] = {
/* SS-5 */
{
.iommu_base = 0x10000000,
.tcx_base = 0x50000000,
.cs_base = 0x6c000000,
.slavio_base = 0x70000000,
.ms_kb_base = 0x71000000,
.serial_base = 0x71100000,
.nvram_base = 0x71200000,
.fd_base = 0x71400000,
.counter_base = 0x71d00000,
.intctl_base = 0x71e00000,
.dma_base = 0x78400000,
.esp_base = 0x78800000,
.le_base = 0x78c00000,
.power_base = 0x7a000000,
.vram_size = 0x00100000,
.nvram_size = 0x2000,
.esp_irq = 18,
.le_irq = 16,
.clock_irq = 7,
.clock1_irq = 19,
.ms_kb_irq = 14,
.ser_irq = 15,
.fd_irq = 22,
.me_irq = 30,
.cs_irq = 5,
.machine_id = 0x80,
.intbit_to_level = {
2, 3, 5, 7, 9, 11, 0, 14, 3, 5, 7, 9, 11, 13, 12, 12,
6, 0, 4, 10, 8, 0, 11, 0, 0, 0, 0, 0, 15, 0, 15, 0,
},
},
/* SS-10 */
{
.iommu_base = 0xfe0000000ULL,
.tcx_base = 0xe20000000ULL,
.cs_base = -1,
.slavio_base = 0xff0000000ULL,
.ms_kb_base = 0xff1000000ULL,
.serial_base = 0xff1100000ULL,
.nvram_base = 0xff1200000ULL,
.fd_base = 0xff1700000ULL,
.counter_base = 0xff1300000ULL,
.intctl_base = 0xff1400000ULL,
.dma_base = 0xef0400000ULL,
.esp_base = 0xef0800000ULL,
.le_base = 0xef0c00000ULL,
.power_base = 0xefa000000ULL,
.vram_size = 0x00100000,
.nvram_size = 0x2000,
.esp_irq = 18,
.le_irq = 16,
.clock_irq = 7,
.clock1_irq = 19,
.ms_kb_irq = 14,
.ser_irq = 15,
.fd_irq = 22,
.me_irq = 30,
.cs_irq = -1,
.machine_id = 0x72,
.intbit_to_level = {
2, 3, 5, 7, 9, 11, 0, 14, 3, 5, 7, 9, 11, 13, 12, 12,
6, 0, 4, 10, 8, 0, 11, 0, 0, 0, 0, 0, 15, 0, 15, 0,
},
},
};
static void sun4m_common_init(int RAM_size, int boot_device, DisplayState *ds,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model,
unsigned int machine, int max_ram)
{
void *nvram;
if ((unsigned int)RAM_size > (unsigned int)max_ram) {
fprintf(stderr, "qemu: Too much memory for this machine: %d, maximum %d\n",
(unsigned int)RAM_size / (1024 * 1024),
(unsigned int)max_ram / (1024 * 1024));
exit(1);
}
nvram = sun4m_hw_init(&hwdefs[machine], RAM_size, ds, cpu_model);
sun4m_load_kernel(hwdefs[machine].vram_size, RAM_size, boot_device,
kernel_filename, kernel_cmdline, initrd_filename,
hwdefs[machine].machine_id, nvram);
}
/* SPARCstation 5 hardware initialisation */
static void ss5_init(int RAM_size, int vga_ram_size, int boot_device,
DisplayState *ds, const char **fd_filename, int snapshot,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
if (cpu_model == NULL)
cpu_model = "Fujitsu MB86904";
sun4m_common_init(RAM_size, boot_device, ds, kernel_filename,
kernel_cmdline, initrd_filename, cpu_model,
0, 0x10000000);
}
/* SPARCstation 10 hardware initialisation */
static void ss10_init(int RAM_size, int vga_ram_size, int boot_device,
DisplayState *ds, const char **fd_filename, int snapshot,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
if (cpu_model == NULL)
cpu_model = "TI SuperSparc II";
sun4m_common_init(RAM_size, boot_device, ds, kernel_filename,
kernel_cmdline, initrd_filename, cpu_model,
1, PROM_ADDR); // XXX prom overlap, actually first 4GB ok
}
QEMUMachine ss5_machine = {
"SS-5",
"Sun4m platform, SPARCstation 5",
ss5_init,
};
QEMUMachine ss10_machine = {
"SS-10",
"Sun4m platform, SPARCstation 10",
ss10_init,
};