382 lines
9.5 KiB
C
382 lines
9.5 KiB
C
/*
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* PXA270-based Zipit Z2 device
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*
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* Copyright (c) 2011 by Vasily Khoruzhick <anarsoul@gmail.com>
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*
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* Code is based on mainstone platform.
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*
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* This code is licensed under the GNU GPL v2.
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include "hw.h"
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#include "pxa.h"
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#include "arm-misc.h"
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#include "devices.h"
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#include "i2c.h"
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#include "ssi.h"
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#include "boards.h"
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#include "sysemu.h"
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#include "flash.h"
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#include "blockdev.h"
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#include "console.h"
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#include "audio/audio.h"
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#include "exec-memory.h"
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#ifdef DEBUG_Z2
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#define DPRINTF(fmt, ...) \
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printf(fmt, ## __VA_ARGS__)
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#else
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#define DPRINTF(fmt, ...)
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#endif
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static struct keymap map[0x100] = {
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[0 ... 0xff] = { -1, -1 },
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[0x3b] = {0, 0}, /* Option = F1 */
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[0xc8] = {0, 1}, /* Up */
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[0xd0] = {0, 2}, /* Down */
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[0xcb] = {0, 3}, /* Left */
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[0xcd] = {0, 4}, /* Right */
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[0xcf] = {0, 5}, /* End */
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[0x0d] = {0, 6}, /* KPPLUS */
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[0xc7] = {1, 0}, /* Home */
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[0x10] = {1, 1}, /* Q */
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[0x17] = {1, 2}, /* I */
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[0x22] = {1, 3}, /* G */
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[0x2d] = {1, 4}, /* X */
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[0x1c] = {1, 5}, /* Enter */
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[0x0c] = {1, 6}, /* KPMINUS */
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[0xc9] = {2, 0}, /* PageUp */
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[0x11] = {2, 1}, /* W */
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[0x18] = {2, 2}, /* O */
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[0x23] = {2, 3}, /* H */
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[0x2e] = {2, 4}, /* C */
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[0x38] = {2, 5}, /* LeftAlt */
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[0xd1] = {3, 0}, /* PageDown */
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[0x12] = {3, 1}, /* E */
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[0x19] = {3, 2}, /* P */
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[0x24] = {3, 3}, /* J */
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[0x2f] = {3, 4}, /* V */
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[0x2a] = {3, 5}, /* LeftShift */
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[0x01] = {4, 0}, /* Esc */
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[0x13] = {4, 1}, /* R */
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[0x1e] = {4, 2}, /* A */
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[0x25] = {4, 3}, /* K */
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[0x30] = {4, 4}, /* B */
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[0x1d] = {4, 5}, /* LeftCtrl */
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[0x0f] = {5, 0}, /* Tab */
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[0x14] = {5, 1}, /* T */
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[0x1f] = {5, 2}, /* S */
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[0x26] = {5, 3}, /* L */
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[0x31] = {5, 4}, /* N */
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[0x39] = {5, 5}, /* Space */
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[0x3c] = {6, 0}, /* Stop = F2 */
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[0x15] = {6, 1}, /* Y */
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[0x20] = {6, 2}, /* D */
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[0x0e] = {6, 3}, /* Backspace */
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[0x32] = {6, 4}, /* M */
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[0x33] = {6, 5}, /* Comma */
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[0x3d] = {7, 0}, /* Play = F3 */
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[0x16] = {7, 1}, /* U */
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[0x21] = {7, 2}, /* F */
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[0x2c] = {7, 3}, /* Z */
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[0x27] = {7, 4}, /* Semicolon */
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[0x34] = {7, 5}, /* Dot */
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};
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#define Z2_RAM_SIZE 0x02000000
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#define Z2_FLASH_BASE 0x00000000
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#define Z2_FLASH_SIZE 0x00800000
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static struct arm_boot_info z2_binfo = {
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.loader_start = PXA2XX_SDRAM_BASE,
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.ram_size = Z2_RAM_SIZE,
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};
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#define Z2_GPIO_SD_DETECT 96
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#define Z2_GPIO_AC_IN 0
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#define Z2_GPIO_KEY_ON 1
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#define Z2_GPIO_LCD_CS 88
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typedef struct {
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SSISlave ssidev;
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int32_t selected;
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int32_t enabled;
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uint8_t buf[3];
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uint32_t cur_reg;
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int pos;
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} ZipitLCD;
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static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value)
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{
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ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
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uint16_t val;
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if (z->selected) {
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z->buf[z->pos] = value & 0xff;
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z->pos++;
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}
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if (z->pos == 3) {
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switch (z->buf[0]) {
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case 0x74:
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DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
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z->cur_reg = z->buf[2];
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break;
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case 0x76:
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val = z->buf[1] << 8 | z->buf[2];
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DPRINTF("%s: value: 0x%.4x\n", __func__, val);
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if (z->cur_reg == 0x22 && val == 0x0000) {
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z->enabled = 1;
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printf("%s: LCD enabled\n", __func__);
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} else if (z->cur_reg == 0x10 && val == 0x0000) {
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z->enabled = 0;
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printf("%s: LCD disabled\n", __func__);
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}
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break;
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default:
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DPRINTF("%s: unknown command!\n", __func__);
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break;
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}
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z->pos = 0;
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}
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return 0;
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}
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static void z2_lcd_cs(void *opaque, int line, int level)
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{
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ZipitLCD *z2_lcd = opaque;
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z2_lcd->selected = !level;
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}
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static int zipit_lcd_init(SSISlave *dev)
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{
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ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
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z->selected = 0;
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z->enabled = 0;
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z->pos = 0;
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return 0;
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}
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static VMStateDescription vmstate_zipit_lcd_state = {
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.name = "zipit-lcd",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField[]) {
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VMSTATE_INT32(selected, ZipitLCD),
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VMSTATE_INT32(enabled, ZipitLCD),
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VMSTATE_BUFFER(buf, ZipitLCD),
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VMSTATE_UINT32(cur_reg, ZipitLCD),
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VMSTATE_INT32(pos, ZipitLCD),
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VMSTATE_END_OF_LIST(),
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}
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};
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static void zipit_lcd_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
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k->init = zipit_lcd_init;
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k->transfer = zipit_lcd_transfer;
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dc->vmsd = &vmstate_zipit_lcd_state;
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}
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static TypeInfo zipit_lcd_info = {
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.name = "zipit-lcd",
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.parent = TYPE_SSI_SLAVE,
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.instance_size = sizeof(ZipitLCD),
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.class_init = zipit_lcd_class_init,
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};
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typedef struct {
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I2CSlave i2c;
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int len;
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uint8_t buf[3];
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} AER915State;
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static int aer915_send(I2CSlave *i2c, uint8_t data)
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{
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AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
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s->buf[s->len] = data;
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if (s->len++ > 2) {
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DPRINTF("%s: message too long (%i bytes)\n",
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__func__, s->len);
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return 1;
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}
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if (s->len == 2) {
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DPRINTF("%s: reg %d value 0x%02x\n", __func__,
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s->buf[0], s->buf[1]);
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}
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return 0;
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}
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static void aer915_event(I2CSlave *i2c, enum i2c_event event)
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{
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AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
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switch (event) {
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case I2C_START_SEND:
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s->len = 0;
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break;
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case I2C_START_RECV:
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if (s->len != 1) {
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DPRINTF("%s: short message!?\n", __func__);
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}
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break;
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case I2C_FINISH:
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break;
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default:
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break;
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}
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}
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static int aer915_recv(I2CSlave *slave)
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{
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int retval = 0x00;
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AER915State *s = FROM_I2C_SLAVE(AER915State, slave);
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switch (s->buf[0]) {
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/* Return hardcoded battery voltage,
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* 0xf0 means ~4.1V
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*/
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case 0x02:
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retval = 0xf0;
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break;
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/* Return 0x00 for other regs,
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* we don't know what they are for,
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* anyway they return 0x00 on real hardware.
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*/
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default:
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break;
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}
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return retval;
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}
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static int aer915_init(I2CSlave *i2c)
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{
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/* Nothing to do. */
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return 0;
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}
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static VMStateDescription vmstate_aer915_state = {
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.name = "aer915",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField[]) {
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VMSTATE_INT32(len, AER915State),
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VMSTATE_BUFFER(buf, AER915State),
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VMSTATE_END_OF_LIST(),
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}
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};
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static void aer915_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
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k->init = aer915_init;
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k->event = aer915_event;
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k->recv = aer915_recv;
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k->send = aer915_send;
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dc->vmsd = &vmstate_aer915_state;
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}
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static TypeInfo aer915_info = {
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.name = "aer915",
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.parent = TYPE_I2C_SLAVE,
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.instance_size = sizeof(AER915State),
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.class_init = aer915_class_init,
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};
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static void z2_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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MemoryRegion *address_space_mem = get_system_memory();
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uint32_t sector_len = 0x10000;
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PXA2xxState *cpu;
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DriveInfo *dinfo;
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int be;
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void *z2_lcd;
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i2c_bus *bus;
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DeviceState *wm;
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if (!cpu_model) {
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cpu_model = "pxa270-c5";
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}
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/* Setup CPU & memory */
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cpu = pxa270_init(address_space_mem, z2_binfo.ram_size, cpu_model);
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#ifdef TARGET_WORDS_BIGENDIAN
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be = 1;
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#else
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be = 0;
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#endif
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dinfo = drive_get(IF_PFLASH, 0, 0);
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if (!dinfo) {
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fprintf(stderr, "Flash image must be given with the "
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"'pflash' parameter\n");
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exit(1);
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}
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if (!pflash_cfi01_register(Z2_FLASH_BASE,
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NULL, "z2.flash0", Z2_FLASH_SIZE,
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dinfo->bdrv, sector_len,
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Z2_FLASH_SIZE / sector_len, 4, 0, 0, 0, 0,
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be)) {
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fprintf(stderr, "qemu: Error registering flash memory.\n");
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exit(1);
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}
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/* setup keypad */
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pxa27x_register_keypad(cpu->kp, map, 0x100);
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/* MMC/SD host */
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pxa2xx_mmci_handlers(cpu->mmc,
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NULL,
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qdev_get_gpio_in(cpu->gpio, Z2_GPIO_SD_DETECT));
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type_register_static(&zipit_lcd_info);
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type_register_static(&aer915_info);
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z2_lcd = ssi_create_slave(cpu->ssp[1], "zipit-lcd");
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bus = pxa2xx_i2c_bus(cpu->i2c[0]);
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i2c_create_slave(bus, "aer915", 0x55);
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wm = i2c_create_slave(bus, "wm8750", 0x1b);
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cpu->i2s->opaque = wm;
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cpu->i2s->codec_out = wm8750_dac_dat;
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cpu->i2s->codec_in = wm8750_adc_dat;
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wm8750_data_req_set(wm, cpu->i2s->data_req, cpu->i2s);
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qdev_connect_gpio_out(cpu->gpio, Z2_GPIO_LCD_CS,
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qemu_allocate_irqs(z2_lcd_cs, z2_lcd, 1)[0]);
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if (kernel_filename) {
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z2_binfo.kernel_filename = kernel_filename;
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z2_binfo.kernel_cmdline = kernel_cmdline;
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z2_binfo.initrd_filename = initrd_filename;
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z2_binfo.board_id = 0x6dd;
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arm_load_kernel(cpu->env, &z2_binfo);
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}
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}
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static QEMUMachine z2_machine = {
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.name = "z2",
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.desc = "Zipit Z2 (PXA27x)",
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.init = z2_init,
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};
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static void z2_machine_init(void)
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{
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qemu_register_machine(&z2_machine);
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}
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machine_init(z2_machine_init);
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