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/*
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* Luminary Micro Stellaris peripherals
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*
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* Copyright (c) 2006 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licenced under the GPL.
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*/
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#include "sysbus.h" |
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#include "ssi.h" |
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#include "arm-misc.h" |
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#include "devices.h" |
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#include "qemu-timer.h" |
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#include "i2c.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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#define GPIO_A 0 |
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#define GPIO_B 1 |
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#define GPIO_C 2 |
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#define GPIO_D 3 |
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#define GPIO_E 4 |
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#define GPIO_F 5 |
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#define GPIO_G 6 |
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#define BP_OLED_I2C 0x01 |
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#define BP_OLED_SSI 0x02 |
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#define BP_GAMEPAD 0x04 |
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|
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typedef const struct { |
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const char *name; |
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uint32_t did0; |
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uint32_t did1; |
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uint32_t dc0; |
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uint32_t dc1; |
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uint32_t dc2; |
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uint32_t dc3; |
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uint32_t dc4; |
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uint32_t peripherals; |
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} stellaris_board_info; |
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/* General purpose timer module. */
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typedef struct gptm_state { |
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SysBusDevice busdev; |
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uint32_t config; |
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uint32_t mode[2];
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uint32_t control; |
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uint32_t state; |
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uint32_t mask; |
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uint32_t load[2];
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uint32_t match[2];
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uint32_t prescale[2];
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uint32_t match_prescale[2];
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uint32_t rtc; |
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int64_t tick[2];
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struct gptm_state *opaque[2]; |
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QEMUTimer *timer[2];
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/* The timers have an alternate output used to trigger the ADC. */
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qemu_irq trigger; |
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qemu_irq irq; |
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} gptm_state; |
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static void gptm_update_irq(gptm_state *s) |
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{ |
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int level;
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level = (s->state & s->mask) != 0;
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qemu_set_irq(s->irq, level); |
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} |
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static void gptm_stop(gptm_state *s, int n) |
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{ |
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qemu_del_timer(s->timer[n]); |
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} |
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static void gptm_reload(gptm_state *s, int n, int reset) |
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{ |
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int64_t tick; |
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if (reset)
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tick = qemu_get_clock(vm_clock); |
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else
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tick = s->tick[n]; |
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if (s->config == 0) { |
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/* 32-bit CountDown. */
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uint32_t count; |
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count = s->load[0] | (s->load[1] << 16); |
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tick += (int64_t)count * system_clock_scale; |
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} else if (s->config == 1) { |
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/* 32-bit RTC. 1Hz tick. */
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tick += ticks_per_sec; |
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} else if (s->mode[n] == 0xa) { |
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/* PWM mode. Not implemented. */
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} else {
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hw_error("TODO: 16-bit timer mode 0x%x\n", s->mode[n]);
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} |
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s->tick[n] = tick; |
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qemu_mod_timer(s->timer[n], tick); |
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} |
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static void gptm_tick(void *opaque) |
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{ |
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gptm_state **p = (gptm_state **)opaque; |
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gptm_state *s; |
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int n;
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s = *p; |
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n = p - s->opaque; |
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if (s->config == 0) { |
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s->state |= 1;
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if ((s->control & 0x20)) { |
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/* Output trigger. */
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qemu_irq_pulse(s->trigger); |
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} |
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if (s->mode[0] & 1) { |
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/* One-shot. */
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s->control &= ~1;
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} else {
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/* Periodic. */
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gptm_reload(s, 0, 0); |
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} |
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} else if (s->config == 1) { |
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/* RTC. */
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uint32_t match; |
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s->rtc++; |
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match = s->match[0] | (s->match[1] << 16); |
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if (s->rtc > match)
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s->rtc = 0;
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if (s->rtc == 0) { |
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s->state |= 8;
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} |
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gptm_reload(s, 0, 0); |
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} else if (s->mode[n] == 0xa) { |
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/* PWM mode. Not implemented. */
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} else {
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hw_error("TODO: 16-bit timer mode 0x%x\n", s->mode[n]);
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} |
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gptm_update_irq(s); |
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} |
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static uint32_t gptm_read(void *opaque, target_phys_addr_t offset) |
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{ |
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gptm_state *s = (gptm_state *)opaque; |
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switch (offset) {
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case 0x00: /* CFG */ |
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return s->config;
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case 0x04: /* TAMR */ |
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return s->mode[0]; |
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case 0x08: /* TBMR */ |
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return s->mode[1]; |
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case 0x0c: /* CTL */ |
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return s->control;
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case 0x18: /* IMR */ |
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return s->mask;
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case 0x1c: /* RIS */ |
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return s->state;
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case 0x20: /* MIS */ |
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return s->state & s->mask;
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case 0x24: /* CR */ |
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return 0; |
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case 0x28: /* TAILR */ |
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return s->load[0] | ((s->config < 4) ? (s->load[1] << 16) : 0); |
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case 0x2c: /* TBILR */ |
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return s->load[1]; |
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case 0x30: /* TAMARCHR */ |
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return s->match[0] | ((s->config < 4) ? (s->match[1] << 16) : 0); |
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case 0x34: /* TBMATCHR */ |
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return s->match[1]; |
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case 0x38: /* TAPR */ |
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return s->prescale[0]; |
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case 0x3c: /* TBPR */ |
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return s->prescale[1]; |
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case 0x40: /* TAPMR */ |
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return s->match_prescale[0]; |
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case 0x44: /* TBPMR */ |
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return s->match_prescale[1]; |
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case 0x48: /* TAR */ |
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if (s->control == 1) |
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return s->rtc;
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case 0x4c: /* TBR */ |
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hw_error("TODO: Timer value read\n");
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default:
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hw_error("gptm_read: Bad offset 0x%x\n", (int)offset); |
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return 0; |
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} |
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} |
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static void gptm_write(void *opaque, target_phys_addr_t offset, uint32_t value) |
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{ |
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gptm_state *s = (gptm_state *)opaque; |
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uint32_t oldval; |
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/* The timers should be disabled before changing the configuration.
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We take advantage of this and defer everything until the timer
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is enabled. */
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switch (offset) {
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case 0x00: /* CFG */ |
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s->config = value; |
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break;
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case 0x04: /* TAMR */ |
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s->mode[0] = value;
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break;
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case 0x08: /* TBMR */ |
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s->mode[1] = value;
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break;
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case 0x0c: /* CTL */ |
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oldval = s->control; |
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s->control = value; |
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/* TODO: Implement pause. */
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if ((oldval ^ value) & 1) { |
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if (value & 1) { |
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gptm_reload(s, 0, 1); |
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} else {
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gptm_stop(s, 0);
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} |
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} |
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if (((oldval ^ value) & 0x100) && s->config >= 4) { |
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if (value & 0x100) { |
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gptm_reload(s, 1, 1); |
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} else {
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gptm_stop(s, 1);
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} |
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} |
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break;
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case 0x18: /* IMR */ |
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s->mask = value & 0x77;
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gptm_update_irq(s); |
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break;
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case 0x24: /* CR */ |
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s->state &= ~value; |
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break;
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case 0x28: /* TAILR */ |
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s->load[0] = value & 0xffff; |
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if (s->config < 4) { |
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s->load[1] = value >> 16; |
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} |
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break;
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case 0x2c: /* TBILR */ |
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s->load[1] = value & 0xffff; |
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break;
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case 0x30: /* TAMARCHR */ |
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s->match[0] = value & 0xffff; |
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if (s->config < 4) { |
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s->match[1] = value >> 16; |
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} |
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break;
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case 0x34: /* TBMATCHR */ |
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s->match[1] = value >> 16; |
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break;
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case 0x38: /* TAPR */ |
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s->prescale[0] = value;
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break;
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case 0x3c: /* TBPR */ |
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s->prescale[1] = value;
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break;
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case 0x40: /* TAPMR */ |
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s->match_prescale[0] = value;
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break;
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case 0x44: /* TBPMR */ |
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s->match_prescale[0] = value;
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break;
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default:
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hw_error("gptm_write: Bad offset 0x%x\n", (int)offset); |
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} |
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gptm_update_irq(s); |
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} |
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static CPUReadMemoryFunc *gptm_readfn[] = {
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gptm_read, |
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gptm_read, |
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gptm_read |
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}; |
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static CPUWriteMemoryFunc *gptm_writefn[] = {
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gptm_write, |
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gptm_write, |
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gptm_write |
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}; |
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static void gptm_save(QEMUFile *f, void *opaque) |
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{ |
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gptm_state *s = (gptm_state *)opaque; |
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qemu_put_be32(f, s->config); |
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qemu_put_be32(f, s->mode[0]);
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qemu_put_be32(f, s->mode[1]);
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qemu_put_be32(f, s->control); |
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qemu_put_be32(f, s->state); |
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qemu_put_be32(f, s->mask); |
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qemu_put_be32(f, s->mode[0]);
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qemu_put_be32(f, s->mode[0]);
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qemu_put_be32(f, s->load[0]);
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qemu_put_be32(f, s->load[1]);
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qemu_put_be32(f, s->match[0]);
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qemu_put_be32(f, s->match[1]);
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qemu_put_be32(f, s->prescale[0]);
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qemu_put_be32(f, s->prescale[1]);
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qemu_put_be32(f, s->match_prescale[0]);
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qemu_put_be32(f, s->match_prescale[1]);
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qemu_put_be32(f, s->rtc); |
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qemu_put_be64(f, s->tick[0]);
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qemu_put_be64(f, s->tick[1]);
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qemu_put_timer(f, s->timer[0]);
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qemu_put_timer(f, s->timer[1]);
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} |
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static int gptm_load(QEMUFile *f, void *opaque, int version_id) |
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{ |
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gptm_state *s = (gptm_state *)opaque; |
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if (version_id != 1) |
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return -EINVAL;
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s->config = qemu_get_be32(f); |
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s->mode[0] = qemu_get_be32(f);
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s->mode[1] = qemu_get_be32(f);
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s->control = qemu_get_be32(f); |
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s->state = qemu_get_be32(f); |
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s->mask = qemu_get_be32(f); |
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s->mode[0] = qemu_get_be32(f);
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s->mode[0] = qemu_get_be32(f);
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s->load[0] = qemu_get_be32(f);
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s->load[1] = qemu_get_be32(f);
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s->match[0] = qemu_get_be32(f);
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s->match[1] = qemu_get_be32(f);
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s->prescale[0] = qemu_get_be32(f);
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s->prescale[1] = qemu_get_be32(f);
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s->match_prescale[0] = qemu_get_be32(f);
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s->match_prescale[1] = qemu_get_be32(f);
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s->rtc = qemu_get_be32(f); |
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s->tick[0] = qemu_get_be64(f);
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s->tick[1] = qemu_get_be64(f);
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qemu_get_timer(f, s->timer[0]);
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qemu_get_timer(f, s->timer[1]);
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return 0; |
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} |
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static void stellaris_gptm_init(SysBusDevice *dev) |
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{ |
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int iomemtype;
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gptm_state *s = FROM_SYSBUS(gptm_state, dev); |
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sysbus_init_irq(dev, &s->irq); |
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qdev_init_gpio_out(&dev->qdev, &s->trigger, 1);
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|
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iomemtype = cpu_register_io_memory(gptm_readfn, |
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gptm_writefn, s); |
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sysbus_init_mmio(dev, 0x1000, iomemtype);
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|
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s->opaque[0] = s->opaque[1] = s; |
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s->timer[0] = qemu_new_timer(vm_clock, gptm_tick, &s->opaque[0]); |
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s->timer[1] = qemu_new_timer(vm_clock, gptm_tick, &s->opaque[1]); |
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register_savevm("stellaris_gptm", -1, 1, gptm_save, gptm_load, s); |
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} |
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|
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|
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/* System controller. */
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typedef struct { |
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uint32_t pborctl; |
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uint32_t ldopctl; |
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uint32_t int_status; |
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uint32_t int_mask; |
368 |
uint32_t resc; |
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uint32_t rcc; |
370 |
uint32_t rcgc[3];
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uint32_t scgc[3];
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uint32_t dcgc[3];
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uint32_t clkvclr; |
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uint32_t ldoarst; |
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uint32_t user0; |
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uint32_t user1; |
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qemu_irq irq; |
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stellaris_board_info *board; |
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} ssys_state; |
380 |
|
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static void ssys_update(ssys_state *s) |
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{ |
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qemu_set_irq(s->irq, (s->int_status & s->int_mask) != 0);
|
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} |
385 |
|
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static uint32_t pllcfg_sandstorm[16] = { |
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0x31c0, /* 1 Mhz */ |
388 |
0x1ae0, /* 1.8432 Mhz */ |
389 |
0x18c0, /* 2 Mhz */ |
390 |
0xd573, /* 2.4576 Mhz */ |
391 |
0x37a6, /* 3.57954 Mhz */ |
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0x1ae2, /* 3.6864 Mhz */ |
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0x0c40, /* 4 Mhz */ |
394 |
0x98bc, /* 4.906 Mhz */ |
395 |
0x935b, /* 4.9152 Mhz */ |
396 |
0x09c0, /* 5 Mhz */ |
397 |
0x4dee, /* 5.12 Mhz */ |
398 |
0x0c41, /* 6 Mhz */ |
399 |
0x75db, /* 6.144 Mhz */ |
400 |
0x1ae6, /* 7.3728 Mhz */ |
401 |
0x0600, /* 8 Mhz */ |
402 |
0x585b /* 8.192 Mhz */ |
403 |
}; |
404 |
|
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static uint32_t pllcfg_fury[16] = { |
406 |
0x3200, /* 1 Mhz */ |
407 |
0x1b20, /* 1.8432 Mhz */ |
408 |
0x1900, /* 2 Mhz */ |
409 |
0xf42b, /* 2.4576 Mhz */ |
410 |
0x37e3, /* 3.57954 Mhz */ |
411 |
0x1b21, /* 3.6864 Mhz */ |
412 |
0x0c80, /* 4 Mhz */ |
413 |
0x98ee, /* 4.906 Mhz */ |
414 |
0xd5b4, /* 4.9152 Mhz */ |
415 |
0x0a00, /* 5 Mhz */ |
416 |
0x4e27, /* 5.12 Mhz */ |
417 |
0x1902, /* 6 Mhz */ |
418 |
0xec1c, /* 6.144 Mhz */ |
419 |
0x1b23, /* 7.3728 Mhz */ |
420 |
0x0640, /* 8 Mhz */ |
421 |
0xb11c /* 8.192 Mhz */ |
422 |
}; |
423 |
|
424 |
static uint32_t ssys_read(void *opaque, target_phys_addr_t offset) |
425 |
{ |
426 |
ssys_state *s = (ssys_state *)opaque; |
427 |
|
428 |
switch (offset) {
|
429 |
case 0x000: /* DID0 */ |
430 |
return s->board->did0;
|
431 |
case 0x004: /* DID1 */ |
432 |
return s->board->did1;
|
433 |
case 0x008: /* DC0 */ |
434 |
return s->board->dc0;
|
435 |
case 0x010: /* DC1 */ |
436 |
return s->board->dc1;
|
437 |
case 0x014: /* DC2 */ |
438 |
return s->board->dc2;
|
439 |
case 0x018: /* DC3 */ |
440 |
return s->board->dc3;
|
441 |
case 0x01c: /* DC4 */ |
442 |
return s->board->dc4;
|
443 |
case 0x030: /* PBORCTL */ |
444 |
return s->pborctl;
|
445 |
case 0x034: /* LDOPCTL */ |
446 |
return s->ldopctl;
|
447 |
case 0x040: /* SRCR0 */ |
448 |
return 0; |
449 |
case 0x044: /* SRCR1 */ |
450 |
return 0; |
451 |
case 0x048: /* SRCR2 */ |
452 |
return 0; |
453 |
case 0x050: /* RIS */ |
454 |
return s->int_status;
|
455 |
case 0x054: /* IMC */ |
456 |
return s->int_mask;
|
457 |
case 0x058: /* MISC */ |
458 |
return s->int_status & s->int_mask;
|
459 |
case 0x05c: /* RESC */ |
460 |
return s->resc;
|
461 |
case 0x060: /* RCC */ |
462 |
return s->rcc;
|
463 |
case 0x064: /* PLLCFG */ |
464 |
{ |
465 |
int xtal;
|
466 |
xtal = (s->rcc >> 6) & 0xf; |
467 |
if (s->board->did0 & (1 << 16)) { |
468 |
return pllcfg_fury[xtal];
|
469 |
} else {
|
470 |
return pllcfg_sandstorm[xtal];
|
471 |
} |
472 |
} |
473 |
case 0x100: /* RCGC0 */ |
474 |
return s->rcgc[0]; |
475 |
case 0x104: /* RCGC1 */ |
476 |
return s->rcgc[1]; |
477 |
case 0x108: /* RCGC2 */ |
478 |
return s->rcgc[2]; |
479 |
case 0x110: /* SCGC0 */ |
480 |
return s->scgc[0]; |
481 |
case 0x114: /* SCGC1 */ |
482 |
return s->scgc[1]; |
483 |
case 0x118: /* SCGC2 */ |
484 |
return s->scgc[2]; |
485 |
case 0x120: /* DCGC0 */ |
486 |
return s->dcgc[0]; |
487 |
case 0x124: /* DCGC1 */ |
488 |
return s->dcgc[1]; |
489 |
case 0x128: /* DCGC2 */ |
490 |
return s->dcgc[2]; |
491 |
case 0x150: /* CLKVCLR */ |
492 |
return s->clkvclr;
|
493 |
case 0x160: /* LDOARST */ |
494 |
return s->ldoarst;
|
495 |
case 0x1e0: /* USER0 */ |
496 |
return s->user0;
|
497 |
case 0x1e4: /* USER1 */ |
498 |
return s->user1;
|
499 |
default:
|
500 |
hw_error("ssys_read: Bad offset 0x%x\n", (int)offset); |
501 |
return 0; |
502 |
} |
503 |
} |
504 |
|
505 |
static void ssys_calculate_system_clock(ssys_state *s) |
506 |
{ |
507 |
system_clock_scale = 5 * (((s->rcc >> 23) & 0xf) + 1); |
508 |
} |
509 |
|
510 |
static void ssys_write(void *opaque, target_phys_addr_t offset, uint32_t value) |
511 |
{ |
512 |
ssys_state *s = (ssys_state *)opaque; |
513 |
|
514 |
switch (offset) {
|
515 |
case 0x030: /* PBORCTL */ |
516 |
s->pborctl = value & 0xffff;
|
517 |
break;
|
518 |
case 0x034: /* LDOPCTL */ |
519 |
s->ldopctl = value & 0x1f;
|
520 |
break;
|
521 |
case 0x040: /* SRCR0 */ |
522 |
case 0x044: /* SRCR1 */ |
523 |
case 0x048: /* SRCR2 */ |
524 |
fprintf(stderr, "Peripheral reset not implemented\n");
|
525 |
break;
|
526 |
case 0x054: /* IMC */ |
527 |
s->int_mask = value & 0x7f;
|
528 |
break;
|
529 |
case 0x058: /* MISC */ |
530 |
s->int_status &= ~value; |
531 |
break;
|
532 |
case 0x05c: /* RESC */ |
533 |
s->resc = value & 0x3f;
|
534 |
break;
|
535 |
case 0x060: /* RCC */ |
536 |
if ((s->rcc & (1 << 13)) != 0 && (value & (1 << 13)) == 0) { |
537 |
/* PLL enable. */
|
538 |
s->int_status |= (1 << 6); |
539 |
} |
540 |
s->rcc = value; |
541 |
ssys_calculate_system_clock(s); |
542 |
break;
|
543 |
case 0x100: /* RCGC0 */ |
544 |
s->rcgc[0] = value;
|
545 |
break;
|
546 |
case 0x104: /* RCGC1 */ |
547 |
s->rcgc[1] = value;
|
548 |
break;
|
549 |
case 0x108: /* RCGC2 */ |
550 |
s->rcgc[2] = value;
|
551 |
break;
|
552 |
case 0x110: /* SCGC0 */ |
553 |
s->scgc[0] = value;
|
554 |
break;
|
555 |
case 0x114: /* SCGC1 */ |
556 |
s->scgc[1] = value;
|
557 |
break;
|
558 |
case 0x118: /* SCGC2 */ |
559 |
s->scgc[2] = value;
|
560 |
break;
|
561 |
case 0x120: /* DCGC0 */ |
562 |
s->dcgc[0] = value;
|
563 |
break;
|
564 |
case 0x124: /* DCGC1 */ |
565 |
s->dcgc[1] = value;
|
566 |
break;
|
567 |
case 0x128: /* DCGC2 */ |
568 |
s->dcgc[2] = value;
|
569 |
break;
|
570 |
case 0x150: /* CLKVCLR */ |
571 |
s->clkvclr = value; |
572 |
break;
|
573 |
case 0x160: /* LDOARST */ |
574 |
s->ldoarst = value; |
575 |
break;
|
576 |
default:
|
577 |
hw_error("ssys_write: Bad offset 0x%x\n", (int)offset); |
578 |
} |
579 |
ssys_update(s); |
580 |
} |
581 |
|
582 |
static CPUReadMemoryFunc *ssys_readfn[] = {
|
583 |
ssys_read, |
584 |
ssys_read, |
585 |
ssys_read |
586 |
}; |
587 |
|
588 |
static CPUWriteMemoryFunc *ssys_writefn[] = {
|
589 |
ssys_write, |
590 |
ssys_write, |
591 |
ssys_write |
592 |
}; |
593 |
|
594 |
static void ssys_reset(void *opaque) |
595 |
{ |
596 |
ssys_state *s = (ssys_state *)opaque; |
597 |
|
598 |
s->pborctl = 0x7ffd;
|
599 |
s->rcc = 0x078e3ac0;
|
600 |
s->rcgc[0] = 1; |
601 |
s->scgc[0] = 1; |
602 |
s->dcgc[0] = 1; |
603 |
} |
604 |
|
605 |
static void ssys_save(QEMUFile *f, void *opaque) |
606 |
{ |
607 |
ssys_state *s = (ssys_state *)opaque; |
608 |
|
609 |
qemu_put_be32(f, s->pborctl); |
610 |
qemu_put_be32(f, s->ldopctl); |
611 |
qemu_put_be32(f, s->int_mask); |
612 |
qemu_put_be32(f, s->int_status); |
613 |
qemu_put_be32(f, s->resc); |
614 |
qemu_put_be32(f, s->rcc); |
615 |
qemu_put_be32(f, s->rcgc[0]);
|
616 |
qemu_put_be32(f, s->rcgc[1]);
|
617 |
qemu_put_be32(f, s->rcgc[2]);
|
618 |
qemu_put_be32(f, s->scgc[0]);
|
619 |
qemu_put_be32(f, s->scgc[1]);
|
620 |
qemu_put_be32(f, s->scgc[2]);
|
621 |
qemu_put_be32(f, s->dcgc[0]);
|
622 |
qemu_put_be32(f, s->dcgc[1]);
|
623 |
qemu_put_be32(f, s->dcgc[2]);
|
624 |
qemu_put_be32(f, s->clkvclr); |
625 |
qemu_put_be32(f, s->ldoarst); |
626 |
} |
627 |
|
628 |
static int ssys_load(QEMUFile *f, void *opaque, int version_id) |
629 |
{ |
630 |
ssys_state *s = (ssys_state *)opaque; |
631 |
|
632 |
if (version_id != 1) |
633 |
return -EINVAL;
|
634 |
|
635 |
s->pborctl = qemu_get_be32(f); |
636 |
s->ldopctl = qemu_get_be32(f); |
637 |
s->int_mask = qemu_get_be32(f); |
638 |
s->int_status = qemu_get_be32(f); |
639 |
s->resc = qemu_get_be32(f); |
640 |
s->rcc = qemu_get_be32(f); |
641 |
s->rcgc[0] = qemu_get_be32(f);
|
642 |
s->rcgc[1] = qemu_get_be32(f);
|
643 |
s->rcgc[2] = qemu_get_be32(f);
|
644 |
s->scgc[0] = qemu_get_be32(f);
|
645 |
s->scgc[1] = qemu_get_be32(f);
|
646 |
s->scgc[2] = qemu_get_be32(f);
|
647 |
s->dcgc[0] = qemu_get_be32(f);
|
648 |
s->dcgc[1] = qemu_get_be32(f);
|
649 |
s->dcgc[2] = qemu_get_be32(f);
|
650 |
s->clkvclr = qemu_get_be32(f); |
651 |
s->ldoarst = qemu_get_be32(f); |
652 |
ssys_calculate_system_clock(s); |
653 |
|
654 |
return 0; |
655 |
} |
656 |
|
657 |
static void stellaris_sys_init(uint32_t base, qemu_irq irq, |
658 |
stellaris_board_info * board, |
659 |
uint8_t *macaddr) |
660 |
{ |
661 |
int iomemtype;
|
662 |
ssys_state *s; |
663 |
|
664 |
s = (ssys_state *)qemu_mallocz(sizeof(ssys_state));
|
665 |
s->irq = irq; |
666 |
s->board = board; |
667 |
/* Most devices come preprogrammed with a MAC address in the user data. */
|
668 |
s->user0 = macaddr[0] | (macaddr[1] << 8) | (macaddr[2] << 16); |
669 |
s->user1 = macaddr[3] | (macaddr[4] << 8) | (macaddr[5] << 16); |
670 |
|
671 |
iomemtype = cpu_register_io_memory(ssys_readfn, |
672 |
ssys_writefn, s); |
673 |
cpu_register_physical_memory(base, 0x00001000, iomemtype);
|
674 |
ssys_reset(s); |
675 |
register_savevm("stellaris_sys", -1, 1, ssys_save, ssys_load, s); |
676 |
} |
677 |
|
678 |
|
679 |
/* I2C controller. */
|
680 |
|
681 |
typedef struct { |
682 |
SysBusDevice busdev; |
683 |
i2c_bus *bus; |
684 |
qemu_irq irq; |
685 |
uint32_t msa; |
686 |
uint32_t mcs; |
687 |
uint32_t mdr; |
688 |
uint32_t mtpr; |
689 |
uint32_t mimr; |
690 |
uint32_t mris; |
691 |
uint32_t mcr; |
692 |
} stellaris_i2c_state; |
693 |
|
694 |
#define STELLARIS_I2C_MCS_BUSY 0x01 |
695 |
#define STELLARIS_I2C_MCS_ERROR 0x02 |
696 |
#define STELLARIS_I2C_MCS_ADRACK 0x04 |
697 |
#define STELLARIS_I2C_MCS_DATACK 0x08 |
698 |
#define STELLARIS_I2C_MCS_ARBLST 0x10 |
699 |
#define STELLARIS_I2C_MCS_IDLE 0x20 |
700 |
#define STELLARIS_I2C_MCS_BUSBSY 0x40 |
701 |
|
702 |
static uint32_t stellaris_i2c_read(void *opaque, target_phys_addr_t offset) |
703 |
{ |
704 |
stellaris_i2c_state *s = (stellaris_i2c_state *)opaque; |
705 |
|
706 |
switch (offset) {
|
707 |
case 0x00: /* MSA */ |
708 |
return s->msa;
|
709 |
case 0x04: /* MCS */ |
710 |
/* We don't emulate timing, so the controller is never busy. */
|
711 |
return s->mcs | STELLARIS_I2C_MCS_IDLE;
|
712 |
case 0x08: /* MDR */ |
713 |
return s->mdr;
|
714 |
case 0x0c: /* MTPR */ |
715 |
return s->mtpr;
|
716 |
case 0x10: /* MIMR */ |
717 |
return s->mimr;
|
718 |
case 0x14: /* MRIS */ |
719 |
return s->mris;
|
720 |
case 0x18: /* MMIS */ |
721 |
return s->mris & s->mimr;
|
722 |
case 0x20: /* MCR */ |
723 |
return s->mcr;
|
724 |
default:
|
725 |
hw_error("strllaris_i2c_read: Bad offset 0x%x\n", (int)offset); |
726 |
return 0; |
727 |
} |
728 |
} |
729 |
|
730 |
static void stellaris_i2c_update(stellaris_i2c_state *s) |
731 |
{ |
732 |
int level;
|
733 |
|
734 |
level = (s->mris & s->mimr) != 0;
|
735 |
qemu_set_irq(s->irq, level); |
736 |
} |
737 |
|
738 |
static void stellaris_i2c_write(void *opaque, target_phys_addr_t offset, |
739 |
uint32_t value) |
740 |
{ |
741 |
stellaris_i2c_state *s = (stellaris_i2c_state *)opaque; |
742 |
|
743 |
switch (offset) {
|
744 |
case 0x00: /* MSA */ |
745 |
s->msa = value & 0xff;
|
746 |
break;
|
747 |
case 0x04: /* MCS */ |
748 |
if ((s->mcr & 0x10) == 0) { |
749 |
/* Disabled. Do nothing. */
|
750 |
break;
|
751 |
} |
752 |
/* Grab the bus if this is starting a transfer. */
|
753 |
if ((value & 2) && (s->mcs & STELLARIS_I2C_MCS_BUSBSY) == 0) { |
754 |
if (i2c_start_transfer(s->bus, s->msa >> 1, s->msa & 1)) { |
755 |
s->mcs |= STELLARIS_I2C_MCS_ARBLST; |
756 |
} else {
|
757 |
s->mcs &= ~STELLARIS_I2C_MCS_ARBLST; |
758 |
s->mcs |= STELLARIS_I2C_MCS_BUSBSY; |
759 |
} |
760 |
} |
761 |
/* If we don't have the bus then indicate an error. */
|
762 |
if (!i2c_bus_busy(s->bus)
|
763 |
|| (s->mcs & STELLARIS_I2C_MCS_BUSBSY) == 0) {
|
764 |
s->mcs |= STELLARIS_I2C_MCS_ERROR; |
765 |
break;
|
766 |
} |
767 |
s->mcs &= ~STELLARIS_I2C_MCS_ERROR; |
768 |
if (value & 1) { |
769 |
/* Transfer a byte. */
|
770 |
/* TODO: Handle errors. */
|
771 |
if (s->msa & 1) { |
772 |
/* Recv */
|
773 |
s->mdr = i2c_recv(s->bus) & 0xff;
|
774 |
} else {
|
775 |
/* Send */
|
776 |
i2c_send(s->bus, s->mdr); |
777 |
} |
778 |
/* Raise an interrupt. */
|
779 |
s->mris |= 1;
|
780 |
} |
781 |
if (value & 4) { |
782 |
/* Finish transfer. */
|
783 |
i2c_end_transfer(s->bus); |
784 |
s->mcs &= ~STELLARIS_I2C_MCS_BUSBSY; |
785 |
} |
786 |
break;
|
787 |
case 0x08: /* MDR */ |
788 |
s->mdr = value & 0xff;
|
789 |
break;
|
790 |
case 0x0c: /* MTPR */ |
791 |
s->mtpr = value & 0xff;
|
792 |
break;
|
793 |
case 0x10: /* MIMR */ |
794 |
s->mimr = 1;
|
795 |
break;
|
796 |
case 0x1c: /* MICR */ |
797 |
s->mris &= ~value; |
798 |
break;
|
799 |
case 0x20: /* MCR */ |
800 |
if (value & 1) |
801 |
hw_error( |
802 |
"stellaris_i2c_write: Loopback not implemented\n");
|
803 |
if (value & 0x20) |
804 |
hw_error( |
805 |
"stellaris_i2c_write: Slave mode not implemented\n");
|
806 |
s->mcr = value & 0x31;
|
807 |
break;
|
808 |
default:
|
809 |
hw_error("stellaris_i2c_write: Bad offset 0x%x\n",
|
810 |
(int)offset);
|
811 |
} |
812 |
stellaris_i2c_update(s); |
813 |
} |
814 |
|
815 |
static void stellaris_i2c_reset(stellaris_i2c_state *s) |
816 |
{ |
817 |
if (s->mcs & STELLARIS_I2C_MCS_BUSBSY)
|
818 |
i2c_end_transfer(s->bus); |
819 |
|
820 |
s->msa = 0;
|
821 |
s->mcs = 0;
|
822 |
s->mdr = 0;
|
823 |
s->mtpr = 1;
|
824 |
s->mimr = 0;
|
825 |
s->mris = 0;
|
826 |
s->mcr = 0;
|
827 |
stellaris_i2c_update(s); |
828 |
} |
829 |
|
830 |
static CPUReadMemoryFunc *stellaris_i2c_readfn[] = {
|
831 |
stellaris_i2c_read, |
832 |
stellaris_i2c_read, |
833 |
stellaris_i2c_read |
834 |
}; |
835 |
|
836 |
static CPUWriteMemoryFunc *stellaris_i2c_writefn[] = {
|
837 |
stellaris_i2c_write, |
838 |
stellaris_i2c_write, |
839 |
stellaris_i2c_write |
840 |
}; |
841 |
|
842 |
static void stellaris_i2c_save(QEMUFile *f, void *opaque) |
843 |
{ |
844 |
stellaris_i2c_state *s = (stellaris_i2c_state *)opaque; |
845 |
|
846 |
qemu_put_be32(f, s->msa); |
847 |
qemu_put_be32(f, s->mcs); |
848 |
qemu_put_be32(f, s->mdr); |
849 |
qemu_put_be32(f, s->mtpr); |
850 |
qemu_put_be32(f, s->mimr); |
851 |
qemu_put_be32(f, s->mris); |
852 |
qemu_put_be32(f, s->mcr); |
853 |
} |
854 |
|
855 |
static int stellaris_i2c_load(QEMUFile *f, void *opaque, int version_id) |
856 |
{ |
857 |
stellaris_i2c_state *s = (stellaris_i2c_state *)opaque; |
858 |
|
859 |
if (version_id != 1) |
860 |
return -EINVAL;
|
861 |
|
862 |
s->msa = qemu_get_be32(f); |
863 |
s->mcs = qemu_get_be32(f); |
864 |
s->mdr = qemu_get_be32(f); |
865 |
s->mtpr = qemu_get_be32(f); |
866 |
s->mimr = qemu_get_be32(f); |
867 |
s->mris = qemu_get_be32(f); |
868 |
s->mcr = qemu_get_be32(f); |
869 |
|
870 |
return 0; |
871 |
} |
872 |
|
873 |
static void stellaris_i2c_init(SysBusDevice * dev) |
874 |
{ |
875 |
stellaris_i2c_state *s = FROM_SYSBUS(stellaris_i2c_state, dev); |
876 |
i2c_bus *bus; |
877 |
int iomemtype;
|
878 |
|
879 |
sysbus_init_irq(dev, &s->irq); |
880 |
bus = i2c_init_bus(&dev->qdev, "i2c");
|
881 |
s->bus = bus; |
882 |
|
883 |
iomemtype = cpu_register_io_memory(stellaris_i2c_readfn, |
884 |
stellaris_i2c_writefn, s); |
885 |
sysbus_init_mmio(dev, 0x1000, iomemtype);
|
886 |
/* ??? For now we only implement the master interface. */
|
887 |
stellaris_i2c_reset(s); |
888 |
register_savevm("stellaris_i2c", -1, 1, |
889 |
stellaris_i2c_save, stellaris_i2c_load, s); |
890 |
} |
891 |
|
892 |
/* Analogue to Digital Converter. This is only partially implemented,
|
893 |
enough for applications that use a combined ADC and timer tick. */
|
894 |
|
895 |
#define STELLARIS_ADC_EM_CONTROLLER 0 |
896 |
#define STELLARIS_ADC_EM_COMP 1 |
897 |
#define STELLARIS_ADC_EM_EXTERNAL 4 |
898 |
#define STELLARIS_ADC_EM_TIMER 5 |
899 |
#define STELLARIS_ADC_EM_PWM0 6 |
900 |
#define STELLARIS_ADC_EM_PWM1 7 |
901 |
#define STELLARIS_ADC_EM_PWM2 8 |
902 |
|
903 |
#define STELLARIS_ADC_FIFO_EMPTY 0x0100 |
904 |
#define STELLARIS_ADC_FIFO_FULL 0x1000 |
905 |
|
906 |
typedef struct |
907 |
{ |
908 |
SysBusDevice busdev; |
909 |
uint32_t actss; |
910 |
uint32_t ris; |
911 |
uint32_t im; |
912 |
uint32_t emux; |
913 |
uint32_t ostat; |
914 |
uint32_t ustat; |
915 |
uint32_t sspri; |
916 |
uint32_t sac; |
917 |
struct {
|
918 |
uint32_t state; |
919 |
uint32_t data[16];
|
920 |
} fifo[4];
|
921 |
uint32_t ssmux[4];
|
922 |
uint32_t ssctl[4];
|
923 |
uint32_t noise; |
924 |
qemu_irq irq[4];
|
925 |
} stellaris_adc_state; |
926 |
|
927 |
static uint32_t stellaris_adc_fifo_read(stellaris_adc_state *s, int n) |
928 |
{ |
929 |
int tail;
|
930 |
|
931 |
tail = s->fifo[n].state & 0xf;
|
932 |
if (s->fifo[n].state & STELLARIS_ADC_FIFO_EMPTY) {
|
933 |
s->ustat |= 1 << n;
|
934 |
} else {
|
935 |
s->fifo[n].state = (s->fifo[n].state & ~0xf) | ((tail + 1) & 0xf); |
936 |
s->fifo[n].state &= ~STELLARIS_ADC_FIFO_FULL; |
937 |
if (tail + 1 == ((s->fifo[n].state >> 4) & 0xf)) |
938 |
s->fifo[n].state |= STELLARIS_ADC_FIFO_EMPTY; |
939 |
} |
940 |
return s->fifo[n].data[tail];
|
941 |
} |
942 |
|
943 |
static void stellaris_adc_fifo_write(stellaris_adc_state *s, int n, |
944 |
uint32_t value) |
945 |
{ |
946 |
int head;
|
947 |
|
948 |
/* TODO: Real hardware has limited size FIFOs. We have a full 16 entry
|
949 |
FIFO fir each sequencer. */
|
950 |
head = (s->fifo[n].state >> 4) & 0xf; |
951 |
if (s->fifo[n].state & STELLARIS_ADC_FIFO_FULL) {
|
952 |
s->ostat |= 1 << n;
|
953 |
return;
|
954 |
} |
955 |
s->fifo[n].data[head] = value; |
956 |
head = (head + 1) & 0xf; |
957 |
s->fifo[n].state &= ~STELLARIS_ADC_FIFO_EMPTY; |
958 |
s->fifo[n].state = (s->fifo[n].state & ~0xf0) | (head << 4); |
959 |
if ((s->fifo[n].state & 0xf) == head) |
960 |
s->fifo[n].state |= STELLARIS_ADC_FIFO_FULL; |
961 |
} |
962 |
|
963 |
static void stellaris_adc_update(stellaris_adc_state *s) |
964 |
{ |
965 |
int level;
|
966 |
int n;
|
967 |
|
968 |
for (n = 0; n < 4; n++) { |
969 |
level = (s->ris & s->im & (1 << n)) != 0; |
970 |
qemu_set_irq(s->irq[n], level); |
971 |
} |
972 |
} |
973 |
|
974 |
static void stellaris_adc_trigger(void *opaque, int irq, int level) |
975 |
{ |
976 |
stellaris_adc_state *s = (stellaris_adc_state *)opaque; |
977 |
int n;
|
978 |
|
979 |
for (n = 0; n < 4; n++) { |
980 |
if ((s->actss & (1 << n)) == 0) { |
981 |
continue;
|
982 |
} |
983 |
|
984 |
if (((s->emux >> (n * 4)) & 0xff) != 5) { |
985 |
continue;
|
986 |
} |
987 |
|
988 |
/* Some applications use the ADC as a random number source, so introduce
|
989 |
some variation into the signal. */
|
990 |
s->noise = s->noise * 314159 + 1; |
991 |
/* ??? actual inputs not implemented. Return an arbitrary value. */
|
992 |
stellaris_adc_fifo_write(s, n, 0x200 + ((s->noise >> 16) & 7)); |
993 |
s->ris |= (1 << n);
|
994 |
stellaris_adc_update(s); |
995 |
} |
996 |
} |
997 |
|
998 |
static void stellaris_adc_reset(stellaris_adc_state *s) |
999 |
{ |
1000 |
int n;
|
1001 |
|
1002 |
for (n = 0; n < 4; n++) { |
1003 |
s->ssmux[n] = 0;
|
1004 |
s->ssctl[n] = 0;
|
1005 |
s->fifo[n].state = STELLARIS_ADC_FIFO_EMPTY; |
1006 |
} |
1007 |
} |
1008 |
|
1009 |
static uint32_t stellaris_adc_read(void *opaque, target_phys_addr_t offset) |
1010 |
{ |
1011 |
stellaris_adc_state *s = (stellaris_adc_state *)opaque; |
1012 |
|
1013 |
/* TODO: Implement this. */
|
1014 |
if (offset >= 0x40 && offset < 0xc0) { |
1015 |
int n;
|
1016 |
n = (offset - 0x40) >> 5; |
1017 |
switch (offset & 0x1f) { |
1018 |
case 0x00: /* SSMUX */ |
1019 |
return s->ssmux[n];
|
1020 |
case 0x04: /* SSCTL */ |
1021 |
return s->ssctl[n];
|
1022 |
case 0x08: /* SSFIFO */ |
1023 |
return stellaris_adc_fifo_read(s, n);
|
1024 |
case 0x0c: /* SSFSTAT */ |
1025 |
return s->fifo[n].state;
|
1026 |
default:
|
1027 |
break;
|
1028 |
} |
1029 |
} |
1030 |
switch (offset) {
|
1031 |
case 0x00: /* ACTSS */ |
1032 |
return s->actss;
|
1033 |
case 0x04: /* RIS */ |
1034 |
return s->ris;
|
1035 |
case 0x08: /* IM */ |
1036 |
return s->im;
|
1037 |
case 0x0c: /* ISC */ |
1038 |
return s->ris & s->im;
|
1039 |
case 0x10: /* OSTAT */ |
1040 |
return s->ostat;
|
1041 |
case 0x14: /* EMUX */ |
1042 |
return s->emux;
|
1043 |
case 0x18: /* USTAT */ |
1044 |
return s->ustat;
|
1045 |
case 0x20: /* SSPRI */ |
1046 |
return s->sspri;
|
1047 |
case 0x30: /* SAC */ |
1048 |
return s->sac;
|
1049 |
default:
|
1050 |
hw_error("strllaris_adc_read: Bad offset 0x%x\n",
|
1051 |
(int)offset);
|
1052 |
return 0; |
1053 |
} |
1054 |
} |
1055 |
|
1056 |
static void stellaris_adc_write(void *opaque, target_phys_addr_t offset, |
1057 |
uint32_t value) |
1058 |
{ |
1059 |
stellaris_adc_state *s = (stellaris_adc_state *)opaque; |
1060 |
|
1061 |
/* TODO: Implement this. */
|
1062 |
if (offset >= 0x40 && offset < 0xc0) { |
1063 |
int n;
|
1064 |
n = (offset - 0x40) >> 5; |
1065 |
switch (offset & 0x1f) { |
1066 |
case 0x00: /* SSMUX */ |
1067 |
s->ssmux[n] = value & 0x33333333;
|
1068 |
return;
|
1069 |
case 0x04: /* SSCTL */ |
1070 |
if (value != 6) { |
1071 |
hw_error("ADC: Unimplemented sequence %x\n",
|
1072 |
value); |
1073 |
} |
1074 |
s->ssctl[n] = value; |
1075 |
return;
|
1076 |
default:
|
1077 |
break;
|
1078 |
} |
1079 |
} |
1080 |
switch (offset) {
|
1081 |
case 0x00: /* ACTSS */ |
1082 |
s->actss = value & 0xf;
|
1083 |
break;
|
1084 |
case 0x08: /* IM */ |
1085 |
s->im = value; |
1086 |
break;
|
1087 |
case 0x0c: /* ISC */ |
1088 |
s->ris &= ~value; |
1089 |
break;
|
1090 |
case 0x10: /* OSTAT */ |
1091 |
s->ostat &= ~value; |
1092 |
break;
|
1093 |
case 0x14: /* EMUX */ |
1094 |
s->emux = value; |
1095 |
break;
|
1096 |
case 0x18: /* USTAT */ |
1097 |
s->ustat &= ~value; |
1098 |
break;
|
1099 |
case 0x20: /* SSPRI */ |
1100 |
s->sspri = value; |
1101 |
break;
|
1102 |
case 0x28: /* PSSI */ |
1103 |
hw_error("Not implemented: ADC sample initiate\n");
|
1104 |
break;
|
1105 |
case 0x30: /* SAC */ |
1106 |
s->sac = value; |
1107 |
break;
|
1108 |
default:
|
1109 |
hw_error("stellaris_adc_write: Bad offset 0x%x\n", (int)offset); |
1110 |
} |
1111 |
stellaris_adc_update(s); |
1112 |
} |
1113 |
|
1114 |
static CPUReadMemoryFunc *stellaris_adc_readfn[] = {
|
1115 |
stellaris_adc_read, |
1116 |
stellaris_adc_read, |
1117 |
stellaris_adc_read |
1118 |
}; |
1119 |
|
1120 |
static CPUWriteMemoryFunc *stellaris_adc_writefn[] = {
|
1121 |
stellaris_adc_write, |
1122 |
stellaris_adc_write, |
1123 |
stellaris_adc_write |
1124 |
}; |
1125 |
|
1126 |
static void stellaris_adc_save(QEMUFile *f, void *opaque) |
1127 |
{ |
1128 |
stellaris_adc_state *s = (stellaris_adc_state *)opaque; |
1129 |
int i;
|
1130 |
int j;
|
1131 |
|
1132 |
qemu_put_be32(f, s->actss); |
1133 |
qemu_put_be32(f, s->ris); |
1134 |
qemu_put_be32(f, s->im); |
1135 |
qemu_put_be32(f, s->emux); |
1136 |
qemu_put_be32(f, s->ostat); |
1137 |
qemu_put_be32(f, s->ustat); |
1138 |
qemu_put_be32(f, s->sspri); |
1139 |
qemu_put_be32(f, s->sac); |
1140 |
for (i = 0; i < 4; i++) { |
1141 |
qemu_put_be32(f, s->fifo[i].state); |
1142 |
for (j = 0; j < 16; j++) { |
1143 |
qemu_put_be32(f, s->fifo[i].data[j]); |
1144 |
} |
1145 |
qemu_put_be32(f, s->ssmux[i]); |
1146 |
qemu_put_be32(f, s->ssctl[i]); |
1147 |
} |
1148 |
qemu_put_be32(f, s->noise); |
1149 |
} |
1150 |
|
1151 |
static int stellaris_adc_load(QEMUFile *f, void *opaque, int version_id) |
1152 |
{ |
1153 |
stellaris_adc_state *s = (stellaris_adc_state *)opaque; |
1154 |
int i;
|
1155 |
int j;
|
1156 |
|
1157 |
if (version_id != 1) |
1158 |
return -EINVAL;
|
1159 |
|
1160 |
s->actss = qemu_get_be32(f); |
1161 |
s->ris = qemu_get_be32(f); |
1162 |
s->im = qemu_get_be32(f); |
1163 |
s->emux = qemu_get_be32(f); |
1164 |
s->ostat = qemu_get_be32(f); |
1165 |
s->ustat = qemu_get_be32(f); |
1166 |
s->sspri = qemu_get_be32(f); |
1167 |
s->sac = qemu_get_be32(f); |
1168 |
for (i = 0; i < 4; i++) { |
1169 |
s->fifo[i].state = qemu_get_be32(f); |
1170 |
for (j = 0; j < 16; j++) { |
1171 |
s->fifo[i].data[j] = qemu_get_be32(f); |
1172 |
} |
1173 |
s->ssmux[i] = qemu_get_be32(f); |
1174 |
s->ssctl[i] = qemu_get_be32(f); |
1175 |
} |
1176 |
s->noise = qemu_get_be32(f); |
1177 |
|
1178 |
return 0; |
1179 |
} |
1180 |
|
1181 |
static void stellaris_adc_init(SysBusDevice *dev) |
1182 |
{ |
1183 |
stellaris_adc_state *s = FROM_SYSBUS(stellaris_adc_state, dev); |
1184 |
int iomemtype;
|
1185 |
int n;
|
1186 |
|
1187 |
for (n = 0; n < 4; n++) { |
1188 |
sysbus_init_irq(dev, &s->irq[n]); |
1189 |
} |
1190 |
|
1191 |
iomemtype = cpu_register_io_memory(stellaris_adc_readfn, |
1192 |
stellaris_adc_writefn, s); |
1193 |
sysbus_init_mmio(dev, 0x1000, iomemtype);
|
1194 |
stellaris_adc_reset(s); |
1195 |
qdev_init_gpio_in(&dev->qdev, stellaris_adc_trigger, 1);
|
1196 |
register_savevm("stellaris_adc", -1, 1, |
1197 |
stellaris_adc_save, stellaris_adc_load, s); |
1198 |
} |
1199 |
|
1200 |
/* Some boards have both an OLED controller and SD card connected to
|
1201 |
the same SSI port, with the SD card chip select connected to a
|
1202 |
GPIO pin. Technically the OLED chip select is connected to the SSI
|
1203 |
Fss pin. We do not bother emulating that as both devices should
|
1204 |
never be selected simultaneously, and our OLED controller ignores stray
|
1205 |
0xff commands that occur when deselecting the SD card. */
|
1206 |
|
1207 |
typedef struct { |
1208 |
SSISlave ssidev; |
1209 |
qemu_irq irq; |
1210 |
int current_dev;
|
1211 |
SSIBus *bus[2];
|
1212 |
} stellaris_ssi_bus_state; |
1213 |
|
1214 |
static void stellaris_ssi_bus_select(void *opaque, int irq, int level) |
1215 |
{ |
1216 |
stellaris_ssi_bus_state *s = (stellaris_ssi_bus_state *)opaque; |
1217 |
|
1218 |
s->current_dev = level; |
1219 |
} |
1220 |
|
1221 |
static uint32_t stellaris_ssi_bus_transfer(SSISlave *dev, uint32_t val)
|
1222 |
{ |
1223 |
stellaris_ssi_bus_state *s = FROM_SSI_SLAVE(stellaris_ssi_bus_state, dev); |
1224 |
|
1225 |
return ssi_transfer(s->bus[s->current_dev], val);
|
1226 |
} |
1227 |
|
1228 |
static void stellaris_ssi_bus_save(QEMUFile *f, void *opaque) |
1229 |
{ |
1230 |
stellaris_ssi_bus_state *s = (stellaris_ssi_bus_state *)opaque; |
1231 |
|
1232 |
qemu_put_be32(f, s->current_dev); |
1233 |
} |
1234 |
|
1235 |
static int stellaris_ssi_bus_load(QEMUFile *f, void *opaque, int version_id) |
1236 |
{ |
1237 |
stellaris_ssi_bus_state *s = (stellaris_ssi_bus_state *)opaque; |
1238 |
|
1239 |
if (version_id != 1) |
1240 |
return -EINVAL;
|
1241 |
|
1242 |
s->current_dev = qemu_get_be32(f); |
1243 |
|
1244 |
return 0; |
1245 |
} |
1246 |
|
1247 |
static void stellaris_ssi_bus_init(SSISlave *dev) |
1248 |
{ |
1249 |
stellaris_ssi_bus_state *s = FROM_SSI_SLAVE(stellaris_ssi_bus_state, dev); |
1250 |
|
1251 |
s->bus[0] = ssi_create_bus(&dev->qdev, "ssi0"); |
1252 |
s->bus[1] = ssi_create_bus(&dev->qdev, "ssi1"); |
1253 |
qdev_init_gpio_in(&dev->qdev, stellaris_ssi_bus_select, 1);
|
1254 |
|
1255 |
register_savevm("stellaris_ssi_bus", -1, 1, |
1256 |
stellaris_ssi_bus_save, stellaris_ssi_bus_load, s); |
1257 |
} |
1258 |
|
1259 |
/* Board init. */
|
1260 |
static stellaris_board_info stellaris_boards[] = {
|
1261 |
{ "LM3S811EVB",
|
1262 |
0,
|
1263 |
0x0032000e,
|
1264 |
0x001f001f, /* dc0 */ |
1265 |
0x001132bf,
|
1266 |
0x01071013,
|
1267 |
0x3f0f01ff,
|
1268 |
0x0000001f,
|
1269 |
BP_OLED_I2C |
1270 |
}, |
1271 |
{ "LM3S6965EVB",
|
1272 |
0x10010002,
|
1273 |
0x1073402e,
|
1274 |
0x00ff007f, /* dc0 */ |
1275 |
0x001133ff,
|
1276 |
0x030f5317,
|
1277 |
0x0f0f87ff,
|
1278 |
0x5000007f,
|
1279 |
BP_OLED_SSI | BP_GAMEPAD |
1280 |
} |
1281 |
}; |
1282 |
|
1283 |
static void stellaris_init(const char *kernel_filename, const char *cpu_model, |
1284 |
stellaris_board_info *board) |
1285 |
{ |
1286 |
static const int uart_irq[] = {5, 6, 33, 34}; |
1287 |
static const int timer_irq[] = {19, 21, 23, 35}; |
1288 |
static const uint32_t gpio_addr[7] = |
1289 |
{ 0x40004000, 0x40005000, 0x40006000, 0x40007000, |
1290 |
0x40024000, 0x40025000, 0x40026000}; |
1291 |
static const int gpio_irq[7] = {0, 1, 2, 3, 4, 30, 31}; |
1292 |
|
1293 |
qemu_irq *pic; |
1294 |
DeviceState *gpio_dev[7];
|
1295 |
qemu_irq gpio_in[7][8]; |
1296 |
qemu_irq gpio_out[7][8]; |
1297 |
qemu_irq adc; |
1298 |
int sram_size;
|
1299 |
int flash_size;
|
1300 |
i2c_bus *i2c; |
1301 |
DeviceState *dev; |
1302 |
int i;
|
1303 |
int j;
|
1304 |
|
1305 |
flash_size = ((board->dc0 & 0xffff) + 1) << 1; |
1306 |
sram_size = (board->dc0 >> 18) + 1; |
1307 |
pic = armv7m_init(flash_size, sram_size, kernel_filename, cpu_model); |
1308 |
|
1309 |
if (board->dc1 & (1 << 16)) { |
1310 |
dev = sysbus_create_varargs("stellaris-adc", 0x40038000, |
1311 |
pic[14], pic[15], pic[16], pic[17], NULL); |
1312 |
adc = qdev_get_gpio_in(dev, 0);
|
1313 |
} else {
|
1314 |
adc = NULL;
|
1315 |
} |
1316 |
for (i = 0; i < 4; i++) { |
1317 |
if (board->dc2 & (0x10000 << i)) { |
1318 |
dev = sysbus_create_simple("stellaris-gptm",
|
1319 |
0x40030000 + i * 0x1000, |
1320 |
pic[timer_irq[i]]); |
1321 |
/* TODO: This is incorrect, but we get away with it because
|
1322 |
the ADC output is only ever pulsed. */
|
1323 |
qdev_connect_gpio_out(dev, 0, adc);
|
1324 |
} |
1325 |
} |
1326 |
|
1327 |
stellaris_sys_init(0x400fe000, pic[28], board, nd_table[0].macaddr); |
1328 |
|
1329 |
for (i = 0; i < 7; i++) { |
1330 |
if (board->dc4 & (1 << i)) { |
1331 |
gpio_dev[i] = sysbus_create_simple("pl061", gpio_addr[i],
|
1332 |
pic[gpio_irq[i]]); |
1333 |
for (j = 0; j < 8; j++) { |
1334 |
gpio_in[i][j] = qdev_get_gpio_in(gpio_dev[i], j); |
1335 |
gpio_out[i][j] = NULL;
|
1336 |
} |
1337 |
} |
1338 |
} |
1339 |
|
1340 |
if (board->dc2 & (1 << 12)) { |
1341 |
dev = sysbus_create_simple("stellaris-i2c", 0x40020000, pic[8]); |
1342 |
i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
|
1343 |
if (board->peripherals & BP_OLED_I2C) {
|
1344 |
i2c_create_slave(i2c, "ssd0303", 0x3d); |
1345 |
} |
1346 |
} |
1347 |
|
1348 |
for (i = 0; i < 4; i++) { |
1349 |
if (board->dc2 & (1 << i)) { |
1350 |
sysbus_create_simple("pl011_luminary", 0x4000c000 + i * 0x1000, |
1351 |
pic[uart_irq[i]]); |
1352 |
} |
1353 |
} |
1354 |
if (board->dc2 & (1 << 4)) { |
1355 |
dev = sysbus_create_simple("pl022", 0x40008000, pic[7]); |
1356 |
if (board->peripherals & BP_OLED_SSI) {
|
1357 |
DeviceState *mux; |
1358 |
void *bus;
|
1359 |
|
1360 |
bus = qdev_get_child_bus(dev, "ssi");
|
1361 |
mux = ssi_create_slave(bus, "evb6965-ssi");
|
1362 |
gpio_out[GPIO_D][0] = qdev_get_gpio_in(mux, 0); |
1363 |
|
1364 |
bus = qdev_get_child_bus(mux, "ssi0");
|
1365 |
dev = ssi_create_slave(bus, "ssi-sd");
|
1366 |
|
1367 |
bus = qdev_get_child_bus(mux, "ssi1");
|
1368 |
dev = ssi_create_slave(bus, "ssd0323");
|
1369 |
gpio_out[GPIO_C][7] = qdev_get_gpio_in(dev, 0); |
1370 |
|
1371 |
/* Make sure the select pin is high. */
|
1372 |
qemu_irq_raise(gpio_out[GPIO_D][0]);
|
1373 |
} |
1374 |
} |
1375 |
if (board->dc4 & (1 << 28)) { |
1376 |
DeviceState *enet; |
1377 |
|
1378 |
qemu_check_nic_model(&nd_table[0], "stellaris"); |
1379 |
|
1380 |
enet = qdev_create(NULL, "stellaris_enet"); |
1381 |
qdev_set_netdev(enet, &nd_table[0]);
|
1382 |
qdev_init(enet); |
1383 |
sysbus_mmio_map(sysbus_from_qdev(enet), 0, 0x40048000); |
1384 |
sysbus_connect_irq(sysbus_from_qdev(enet), 0, pic[42]); |
1385 |
} |
1386 |
if (board->peripherals & BP_GAMEPAD) {
|
1387 |
qemu_irq gpad_irq[5];
|
1388 |
static const int gpad_keycode[5] = { 0xc8, 0xd0, 0xcb, 0xcd, 0x1d }; |
1389 |
|
1390 |
gpad_irq[0] = qemu_irq_invert(gpio_in[GPIO_E][0]); /* up */ |
1391 |
gpad_irq[1] = qemu_irq_invert(gpio_in[GPIO_E][1]); /* down */ |
1392 |
gpad_irq[2] = qemu_irq_invert(gpio_in[GPIO_E][2]); /* left */ |
1393 |
gpad_irq[3] = qemu_irq_invert(gpio_in[GPIO_E][3]); /* right */ |
1394 |
gpad_irq[4] = qemu_irq_invert(gpio_in[GPIO_F][1]); /* select */ |
1395 |
|
1396 |
stellaris_gamepad_init(5, gpad_irq, gpad_keycode);
|
1397 |
} |
1398 |
for (i = 0; i < 7; i++) { |
1399 |
if (board->dc4 & (1 << i)) { |
1400 |
for (j = 0; j < 8; j++) { |
1401 |
if (gpio_out[i][j]) {
|
1402 |
qdev_connect_gpio_out(gpio_dev[i], j, gpio_out[i][j]); |
1403 |
} |
1404 |
} |
1405 |
} |
1406 |
} |
1407 |
} |
1408 |
|
1409 |
/* FIXME: Figure out how to generate these from stellaris_boards. */
|
1410 |
static void lm3s811evb_init(ram_addr_t ram_size, |
1411 |
const char *boot_device, |
1412 |
const char *kernel_filename, const char *kernel_cmdline, |
1413 |
const char *initrd_filename, const char *cpu_model) |
1414 |
{ |
1415 |
stellaris_init(kernel_filename, cpu_model, &stellaris_boards[0]);
|
1416 |
} |
1417 |
|
1418 |
static void lm3s6965evb_init(ram_addr_t ram_size, |
1419 |
const char *boot_device, |
1420 |
const char *kernel_filename, const char *kernel_cmdline, |
1421 |
const char *initrd_filename, const char *cpu_model) |
1422 |
{ |
1423 |
stellaris_init(kernel_filename, cpu_model, &stellaris_boards[1]);
|
1424 |
} |
1425 |
|
1426 |
static QEMUMachine lm3s811evb_machine = {
|
1427 |
.name = "lm3s811evb",
|
1428 |
.desc = "Stellaris LM3S811EVB",
|
1429 |
.init = lm3s811evb_init, |
1430 |
}; |
1431 |
|
1432 |
static QEMUMachine lm3s6965evb_machine = {
|
1433 |
.name = "lm3s6965evb",
|
1434 |
.desc = "Stellaris LM3S6965EVB",
|
1435 |
.init = lm3s6965evb_init, |
1436 |
}; |
1437 |
|
1438 |
static void stellaris_machine_init(void) |
1439 |
{ |
1440 |
qemu_register_machine(&lm3s811evb_machine); |
1441 |
qemu_register_machine(&lm3s6965evb_machine); |
1442 |
} |
1443 |
|
1444 |
machine_init(stellaris_machine_init); |
1445 |
|
1446 |
static SSISlaveInfo stellaris_ssi_bus_info = {
|
1447 |
.qdev.name = "evb6965-ssi",
|
1448 |
.qdev.size = sizeof(stellaris_ssi_bus_state),
|
1449 |
.init = stellaris_ssi_bus_init, |
1450 |
.transfer = stellaris_ssi_bus_transfer |
1451 |
}; |
1452 |
|
1453 |
static void stellaris_register_devices(void) |
1454 |
{ |
1455 |
sysbus_register_dev("stellaris-i2c", sizeof(stellaris_i2c_state), |
1456 |
stellaris_i2c_init); |
1457 |
sysbus_register_dev("stellaris-gptm", sizeof(gptm_state), |
1458 |
stellaris_gptm_init); |
1459 |
sysbus_register_dev("stellaris-adc", sizeof(stellaris_adc_state), |
1460 |
stellaris_adc_init); |
1461 |
ssi_register_slave(&stellaris_ssi_bus_info); |
1462 |
} |
1463 |
|
1464 |
device_init(stellaris_register_devices) |