int flash_info_read(uint32_t offset, uint32_t *dst)
{
int retval;
/* Make sure flash controller is awake. */
retval = _check_flash_is_awake();
if (retval)
return retval;
GWRITE_FIELD(FLASH, FSH_TRANS, OFFSET, offset);
GWRITE_FIELD(FLASH, FSH_TRANS, MAINB, 1);
GWRITE_FIELD(FLASH, FSH_TRANS, SIZE, 1);
retval = _flash_cmd(1, FSH_OP_READ);
if (retval)
return retval;
if (_flash_error())
return E_FL_ERROR;
if (!retval)
*dst = GREG32(FLASH, FSH_DOUT_VAL1);
return retval;
}
void rbox_init(void)
{
/* Enable RBOX */
clock_enable_module(MODULE_RBOX, 1);
/* Clear existing interrupts */
GWRITE(RBOX, WAKEUP_CLEAR, 1);
GWRITE(RBOX, INT_STATE, 1);
/* Make sure fuse override is not already enabled */
GWRITE(RBOX, FUSE_CTRL, 0);
/* Block output from key0 and 1 when power button is pressed */
GWRITE_FIELD(RBOX, DEBUG_BLOCK_OUTPUT, KEY0_SEL, 1);
GWRITE_FIELD(RBOX, DEBUG_BLOCK_OUTPUT, KEY1_SEL, 1);
/* Increase debounce */
GWRITE_FIELD(RBOX, DEBUG_DEBOUNCE, PERIOD, 15);
/* Enable debug override */
GWRITE_FIELD(RBOX, FUSE_CTRL, OVERRIDE_FUSE, 1);
GWRITE_FIELD(RBOX, FUSE_CTRL, OVERRIDE_FUSE_READY, 1);
#ifdef CONFIG_RBOX_DEBUG
enable_interrupts();
#endif
}
/** Configure the data transmission format
*
* @param mode Clock polarity and phase mode (0 - 3)
*
*/
static void sps_configure(enum sps_mode mode, enum spi_clock_mode clk_mode)
{
/* Disable All Interrupts */
GREG32(SPS, ICTRL) = 0;
GWRITE_FIELD(SPS, CTRL, MODE, mode);
GWRITE_FIELD(SPS, CTRL, IDLE_LVL, 0);
GWRITE_FIELD(SPS, CTRL, CPHA, clk_mode & 1);
GWRITE_FIELD(SPS, CTRL, CPOL, (clk_mode >> 1) & 1);
GWRITE_FIELD(SPS, CTRL, TXBITOR, 1); /* MSB first */
GWRITE_FIELD(SPS, CTRL, RXBITOR, 1); /* MSB first */
/* xfer 0xff when tx fifo is empty */
GREG32(SPS, DUMMY_WORD) = GC_SPS_DUMMY_WORD_DEFAULT;
/* [5,4,3] [2,1,0]
* RX{DIS, EN, RST} TX{DIS, EN, RST}
*/
GREG32(SPS, FIFO_CTRL) = 0x9;
/* wait for reset to self clear. */
while (GREG32(SPS, FIFO_CTRL) & 9)
;
/* Do not enable TX FIFO until we have something to send. */
GWRITE_FIELD(SPS, FIFO_CTRL, RXFIFO_EN, 1);
GREG32(SPS, RXFIFO_THRESHOLD) = 8;
GWRITE_FIELD(SPS, ICTRL, RXFIFO_LVL, 1);
/* Use CS_DEASSERT to retrieve all remaining bytes from RX FIFO. */
GWRITE_FIELD(SPS, ISTATE_CLR, CS_DEASSERT, 1);
GWRITE_FIELD(SPS, ICTRL, CS_DEASSERT, 1);
}
static void sps_cs_deassert_interrupt(uint32_t port)
{
/* Make sure the receive FIFO is drained. */
sps_rx_interrupt(port, 1);
GWRITE_FIELD(SPS, ISTATE_CLR, CS_DEASSERT, 1);
GWRITE_FIELD(SPS, FIFO_CTRL, TXFIFO_EN, 0);
/*
* And transmit FIFO is emptied, so the next transaction doesn't start
* by clocking out any bytes left over from this one.
*/
GREG32(SPS, TXFIFO_WPTR) = GREG32(SPS, TXFIFO_RPTR);
}
void unlockFlashForRW(void)
{
uint32_t text_end = ((uint32_t)(&__ro_end) +
(uint32_t)(&__data_end) -
(uint32_t)(&__data_start) +
CONFIG_FLASH_BANK_SIZE)
& ~(CONFIG_FLASH_BANK_SIZE - 1);
GREG32(GLOBALSEC, FLASH_REGION1_BASE_ADDR) = text_end;
GREG32(GLOBALSEC, FLASH_REGION1_SIZE) =
CONFIG_FLASH_SIZE - text_end - 1;
GWRITE_FIELD(GLOBALSEC, FLASH_REGION1_CTRL, EN, 1);
GWRITE_FIELD(GLOBALSEC, FLASH_REGION1_CTRL, RD_EN, 1);
GWRITE_FIELD(GLOBALSEC, FLASH_REGION1_CTRL, WR_EN, 0);
}
void usb_spi_board_enable(struct usb_spi_config const *config)
{
hook_call_deferred(&update_finished_data, -1);
update_in_progress = 1;
disable_ec_ap_spi();
if (config->state->enabled_host == USB_SPI_EC)
enable_ec_spi();
else if (config->state->enabled_host == USB_SPI_AP)
enable_ap_spi();
else {
CPRINTS("DEVICE NOT SUPPORTED");
return;
}
/* Connect DIO A4, A8, and A14 to the SPI peripheral */
GWRITE(PINMUX, DIOA4_SEL, 0); /* SPI_MOSI */
GWRITE(PINMUX, DIOA8_SEL, 0); /* SPI_CS_L */
GWRITE(PINMUX, DIOA14_SEL, 0); /* SPI_CLK */
/* Set SPI_CS to be an internal pull up */
GWRITE_FIELD(PINMUX, DIOA14_CTL, PU, 1);
CPRINTS("usb_spi enable %s",
gpio_get_level(GPIO_AP_FLASH_SELECT) ? "AP" : "EC");
spi_enable(CONFIG_SPI_FLASH_PORT, 1);
}
void usb_spi_board_disable(struct usb_spi_config const *config)
{
CPRINTS("usb_spi disable");
spi_enable(CONFIG_SPI_FLASH_PORT, 0);
disable_ec_ap_spi();
/* Disconnect SPI peripheral to tri-state pads */
/* Disable internal pull up */
GWRITE_FIELD(PINMUX, DIOA14_CTL, PU, 0);
/* TODO: Implement way to get the gpio */
ASSERT(GREAD(PINMUX, GPIO0_GPIO7_SEL) == GC_PINMUX_DIOA4_SEL);
ASSERT(GREAD(PINMUX, GPIO0_GPIO8_SEL) == GC_PINMUX_DIOA8_SEL);
ASSERT(GREAD(PINMUX, GPIO0_GPIO9_SEL) == GC_PINMUX_DIOA14_SEL);
/* Set SPI MOSI, CLK, and CS_L as inputs */
GWRITE(PINMUX, DIOA4_SEL, GC_PINMUX_GPIO0_GPIO7_SEL);
GWRITE(PINMUX, DIOA8_SEL, GC_PINMUX_GPIO0_GPIO8_SEL);
GWRITE(PINMUX, DIOA14_SEL, GC_PINMUX_GPIO0_GPIO9_SEL);
/*
* TODO(crosbug.com/p/52366): remove once sys_rst just resets the TPM
* instead of cr50.
* Resetting the EC and AP cause sys_rst to be asserted currently that
* will cause cr50 to do a soft reset. Delay the end of the transaction
* to prevent cr50 from resetting during a series of usb_spi calls.
*/
hook_call_deferred(&update_finished_data, 1 * SECOND);
}
void init_jittery_clock(int highsec)
{
unsigned trimfast = GR_FUSE(RC_JTR_OSC60_CC_TRIM);
unsigned trim48 = GR_FUSE(RC_JTR_OSC48_CC_TRIM);
unsigned delta = (trim48 - trimfast);
/* For metastability reasons, avoid clk_jtr ~= clk_timer, make
* a keepout region around 24MHz of about 0.75MHz, about 3/16 of the
* the delta from trimfast and trim48 */
unsigned skiplow = (trim48 << 4) - (delta * 6);
unsigned skiphigh = (trim48 << 4) + (delta * 6);
unsigned setting = trimfast << 4;
unsigned stepx16;
unsigned bankval;
int bank;
if (highsec)
stepx16 = 0xff - trimfast;
else
stepx16 = 2 * (trim48 - trimfast);
for (bank = 0; bank < 16; bank++) {
/* saturate at 0xff */
bankval = (setting > 0xfff) ? 0xff : (setting >> 4);
GR_XO_JTR_JITTERY_TRIM_BANK(bank) = bankval;
setting += stepx16;
if ((setting > skiplow) && (setting < skiphigh))
setting = skiphigh;
}
GWRITE_FIELD(XO, CLK_JTR_TRIM_CTRL, RC_COARSE_TRIM_SRC, 2);
GWRITE_FIELD(XO, CLK_JTR_TRIM_CTRL, RC_INITIAL_TRIM_PERIOD, 100);
GWRITE_FIELD(XO, CLK_JTR_TRIM_CTRL, RC_TRIM_EN, 1);
GREG32(XO, CLK_JTR_JITTERY_TRIM_EN) = 1;
GREG32(XO, CLK_JTR_SYNC_CONTENTS) = 0;
/* Writing any value locks things until the next hard reboot */
GREG32(XO, CFG_WR_EN) = 0;
GREG32(XO, JTR_CTRL_EN) = 0;
}
void disarmRAMGuards(void)
{
GWRITE_FIELD(GLOBALSEC, CPU0_D_REGION0_CTRL, EN, 1);
GWRITE_FIELD(GLOBALSEC, CPU0_D_REGION0_CTRL, RD_EN, 1);
GWRITE_FIELD(GLOBALSEC, CPU0_D_REGION0_CTRL, WR_EN, 1);
GWRITE_FIELD(GLOBALSEC, CPU0_D_REGION1_CTRL, EN, 1);
GWRITE_FIELD(GLOBALSEC, CPU0_D_REGION1_CTRL, RD_EN, 1);
GWRITE_FIELD(GLOBALSEC, CPU0_D_REGION1_CTRL, WR_EN, 1);
}
static void usb_reset(void)
{
CPRINTS("%s, status %x", __func__, GR_USB_GINTSTS);
print_later("usb_reset()", 0, 0, 0, 0, 0);
/* Clear our internal state */
device_state = DS_DEFAULT;
configuration_value = 0;
/* Clear the device address */
GWRITE_FIELD(USB, DCFG, DEVADDR, 0);
/* Reinitialize all the endpoints */
usb_init_endpoints();
}
static int do_flash_op(enum flash_op op, int is_info_bank,
int byte_offset, int words)
{
volatile uint32_t *fsh_pe_control;
uint32_t opcode, tmp, errors;
int retry_count, max_attempts, extra_prog_pulse, i;
int timedelay_us = 100;
uint32_t prev_error = 0;
/* Make sure the smart program/erase algorithms are enabled. */
if (!GREAD(FLASH, FSH_TIMING_PROG_SMART_ALGO_ON) ||
!GREAD(FLASH, FSH_TIMING_ERASE_SMART_ALGO_ON)) {
CPRINTF("%s:%d\n", __func__, __LINE__);
return EC_ERROR_UNIMPLEMENTED;
}
/* Error status is self-clearing. Read it until it does (we hope). */
for (i = 0; i < 50; i++) {
tmp = GREAD(FLASH, FSH_ERROR);
if (!tmp)
break;
usleep(timedelay_us);
}
/* If we can't clear the error status register then something is wrong.
*/
if (tmp) {
CPRINTF("%s:%d\n", __func__, __LINE__);
return EC_ERROR_UNKNOWN;
}
/* We have two flash banks. Adjust offset and registers accordingly. */
if (is_info_bank) {
/* Only INFO bank operations are supported. */
fsh_pe_control = GREG32_ADDR(FLASH, FSH_PE_CONTROL1);
} else if (byte_offset >= CFG_FLASH_HALF) {
byte_offset -= CFG_FLASH_HALF;
fsh_pe_control = GREG32_ADDR(FLASH, FSH_PE_CONTROL1);
} else {
fsh_pe_control = GREG32_ADDR(FLASH, FSH_PE_CONTROL0);
}
/* What are we doing? */
switch (op) {
case OP_ERASE_BLOCK:
if (is_info_bank)
/* Erasing the INFO bank from the RW section is
* unsupported. */
return EC_ERROR_INVAL;
opcode = 0x31415927;
words = 0; /* don't care, really */
/* This number is based on the TSMC spec Nme=Terase/Tsme */
max_attempts = 45;
break;
case OP_WRITE_BLOCK:
opcode = 0x27182818;
words--; /* count register is zero-based */
/* This number is based on the TSMC spec Nmp=Tprog/Tsmp */
max_attempts = 9;
break;
case OP_READ_BLOCK:
if (!is_info_bank)
/* This code path only supports reading from
* the INFO bank.
*/
return EC_ERROR_INVAL;
opcode = 0x16021765;
words = 1;
max_attempts = 9;
break;
default:
return EC_ERROR_INVAL;
}
/*
* Set the parameters. For writes, we assume the write buffer is
* already filled before we call this function.
*/
GWRITE_FIELD(FLASH, FSH_TRANS, OFFSET,
byte_offset / 4); /* word offset */
GWRITE_FIELD(FLASH, FSH_TRANS, MAINB, is_info_bank ? 1 : 0);
GWRITE_FIELD(FLASH, FSH_TRANS, SIZE, words);
/* TODO: Make sure this function isn't getting called "too often" in
* between erases.
*/
extra_prog_pulse = 0;
for (retry_count = 0; retry_count < max_attempts; retry_count++) {
/* Kick it off */
GWRITE(FLASH, FSH_PE_EN, 0xb11924e1);
*fsh_pe_control = opcode;
/* Wait for completion. 150ms should be enough
* (crosbug.com/p/45366).
*/
for (i = 0; i < 1500; i++) {
tmp = *fsh_pe_control;
if (!tmp)
break;
usleep(timedelay_us);
}
/* Timed out waiting for control register to clear */
if (tmp) {
CPRINTF("%s:%d\n", __func__, __LINE__);
return EC_ERROR_UNKNOWN;
}
/* Check error status */
errors = GREAD(FLASH, FSH_ERROR);
if (errors && (errors != prev_error)) {
prev_error = errors;
CPRINTF("%s:%d errors %x fsh_pe_control %p\n",
__func__, __LINE__, errors, fsh_pe_control);
}
/* Error status is self-clearing. Read it until it does
* (we hope).
*/
for (i = 0; i < 50; i++) {
tmp = GREAD(FLASH, FSH_ERROR);
if (!tmp)
break;
usleep(timedelay_us);
}
/* If we can't clear the error status register then something
* is wrong.
*/
if (tmp) {
CPRINTF("%s:%d\n", __func__, __LINE__);
return EC_ERROR_UNKNOWN;
}
/* The operation was successful. */
if (!errors) {
/* From the spec:
* "In addition, one more program pulse is needed after
* program verification is passed."
*/
if (op == OP_WRITE_BLOCK && !extra_prog_pulse) {
extra_prog_pulse = 1;
max_attempts++;
continue;
}
return EC_SUCCESS;
}
/* If there were errors after completion retry. */
watchdog_reload();
}
CPRINTF("%s:%d, retry count %d\n", __func__, __LINE__, retry_count);
return EC_ERROR_UNKNOWN;
}
/*
* Push data to the SPS TX FIFO
* @param data Pointer to 8-bit data
* @param data_size Number of bytes to transmit
* @return : actual number of bytes placed into tx fifo
*/
int sps_transmit(uint8_t *data, size_t data_size)
{
volatile uint32_t *sps_tx_fifo;
uint32_t rptr;
uint32_t wptr;
uint32_t fifo_room;
int bytes_sent;
int inst = 0;
if (GREAD_FIELD_I(SPS, inst, ISTATE, TXFIFO_EMPTY))
tx_empty_count++; /* Inside packet this means underrun. */
sps_tx_fifo = (volatile uint32_t *)SPS_TX_FIFO_BASE_ADDR;
wptr = GREG32_I(SPS, inst, TXFIFO_WPTR);
rptr = GREG32_I(SPS, inst, TXFIFO_RPTR);
fifo_room = (rptr - wptr - 1) & SPS_FIFO_MASK;
if (fifo_room < data_size) {
bytes_sent = fifo_room;
data_size = fifo_room;
} else {
bytes_sent = data_size;
}
sps_tx_fifo += (wptr & SPS_FIFO_MASK) / sizeof(*sps_tx_fifo);
while (data_size) {
if ((wptr & 3) || (data_size < 4) || ((uintptr_t)data & 3)) {
/*
* Either we have less then 4 bytes to send, or one of
* the pointers is not 4 byte aligned. Need to go byte
* by byte.
*/
uint32_t fifo_contents;
int bit_shift;
fifo_contents = *sps_tx_fifo;
do {
/*
* CR50 SPS controller does not allow byte
* accesses for writes into the FIFO, so read
* modify/write is requred. Tracked uder
* http://b/20894727
*/
bit_shift = 8 * (wptr & 3);
fifo_contents &= ~(0xff << bit_shift);
fifo_contents |=
(((uint32_t)(*data++)) << bit_shift);
data_size--;
wptr++;
} while (data_size && (wptr & 3));
*sps_tx_fifo++ = fifo_contents;
} else {
/*
* Both fifo wptr and data are aligned and there is
* plenty to send.
*/
*sps_tx_fifo++ = *((uint32_t *)data);
data += 4;
data_size -= 4;
wptr += 4;
}
GREG32_I(SPS, inst, TXFIFO_WPTR) = wptr & SPS_FIFO_PTR_MASK;
/* Make sure FIFO pointer wraps along with the index. */
if (!(wptr & SPS_FIFO_MASK))
sps_tx_fifo = (volatile uint32_t *)
SPS_TX_FIFO_BASE_ADDR;
}
/*
* Start TX if necessary. This happens after FIFO is primed, which
* helps aleviate TX underrun problems but introduces delay before
* data starts coming out.
*/
if (!GREAD_FIELD(SPS, FIFO_CTRL, TXFIFO_EN))
GWRITE_FIELD(SPS, FIFO_CTRL, TXFIFO_EN, 1);
sps_tx_count += bytes_sent;
return bytes_sent;
}
void init_sof_clock(void)
{
/* Copy fuse value into software registers, both coarse and fine */
unsigned coarseTrimVal = GR_FUSE(RC_TIMER_OSC48_CC_TRIM);
unsigned fineTrimVal = GR_FUSE(RC_TIMER_OSC48_FC_TRIM);
/* We think SOF toggle happens once every mS, or ~24000 clock ticks */
unsigned targetCnt = PCLK_FREQ / 1000;
/* The possible operations of a particular calibration bucket */
unsigned binaryDnOp = 0x1 | 0x1 << 4;
unsigned binaryUpOp = 0x1 | 0x0 << 4;
unsigned subOp = 0x3 | 0x1 << 4;
unsigned addOp = 0x2 | 0x1 << 4;
unsigned nop = 0;
GREG32(XO, CLK_TIMER_RC_COARSE_ATE_TRIM) = coarseTrimVal;
GREG32(XO, CLK_TIMER_RC_FINE_ATE_TRIM) = fineTrimVal;
/* Coarse trim values come from software */
GWRITE_FIELD(XO, CLK_TIMER_TRIM_CTRL, RC_COARSE_TRIM_SRC, 0);
/* enable error interrupts
* This enables underrun and overflow interrupts */
GREG32(XO, DXO_INT_ENABLE) = 0xC;
/* Setup SOF calibration buckets and associated operations */
GREG32(XO, CLK_TIMER_SLOW_CALIB0) = targetCnt * 70 / 100;
GREG32(XO, CLK_TIMER_SLOW_CALIB1) = targetCnt * 80 / 100;
GREG32(XO, CLK_TIMER_SLOW_CALIB2) = targetCnt * 90 / 100;
GREG32(XO, CLK_TIMER_SLOW_CALIB3) =
targetCnt * (1000000 - 1250) / 1000000;
GREG32(XO, CLK_TIMER_SLOW_CALIB4) = targetCnt;
GREG32(XO, CLK_TIMER_SLOW_CALIB5) =
targetCnt * (1000000 + 1250) / 1000000;
GREG32(XO, CLK_TIMER_SLOW_CALIB6) = targetCnt * 110 / 100;
GREG32(XO, CLK_TIMER_SLOW_CALIB7) = targetCnt * 120 / 100;
/* This is a work-around for the screwy SOF */
GREG32(XO, CLK_TIMER_SLOW_CALIB_CTRL0) = nop;
GREG32(XO, CLK_TIMER_SLOW_CALIB_CTRL1) = binaryDnOp;
GREG32(XO, CLK_TIMER_SLOW_CALIB_CTRL2) = binaryDnOp;
GREG32(XO, CLK_TIMER_SLOW_CALIB_CTRL3) = subOp;
GREG32(XO, CLK_TIMER_SLOW_CALIB_CTRL4) = nop;
GREG32(XO, CLK_TIMER_SLOW_CALIB_CTRL5) = nop;
GREG32(XO, CLK_TIMER_SLOW_CALIB_CTRL6) = addOp;
GREG32(XO, CLK_TIMER_SLOW_CALIB_CTRL7) = binaryUpOp;
GREG32(XO, CLK_TIMER_SLOW_CALIB_CTRL8) = binaryUpOp;
/* Set the calibration mode */
GWRITE_FIELD(XO, CLK_TIMER_CALIB_TRIM_CTRL, ENABLE_FAST, 0);
GWRITE_FIELD(XO, CLK_TIMER_CALIB_TRIM_CTRL, ENABLE_SLOW, 1);
GWRITE_FIELD(XO, CLK_TIMER_CALIB_TRIM_CTRL, SLOW_MODE_SEL, 0); /* SOF */
GWRITE_FIELD(XO, CLK_TIMER_CALIB_TRIM_CTRL, MAX_TRIM_SEL, 1);
/* Don't stop when a NOP operation is seen, keep on calibrating */
GWRITE_FIELD(XO, CLK_TIMER_CALIB_TRIM_CTRL, STOP_ON_NOP, 0);
/* Set source of trim codes:
* coarse trim comes from software
* fine trim comes from calibration engine */
GWRITE_FIELD(XO, CLK_TIMER_TRIM_CTRL, RC_COARSE_TRIM_SRC, 0);
GWRITE_FIELD(XO, CLK_TIMER_TRIM_CTRL, RC_FINE_TRIM_SRC, 1);
/* Enable dynamic trim */
GWRITE_FIELD(XO, CLK_TIMER_TRIM_CTRL, RC_TRIM_EN, 1);
/* Sync everything! */
GREG32(XO, CLK_TIMER_SYNC_CONTENTS) = 1;
/* Enable interrupts */
task_enable_irq(GC_IRQNUM_XO0_SLOW_CALIB_UNDERRUN_INT);
task_enable_irq(GC_IRQNUM_XO0_SLOW_CALIB_OVERFLOW_INT);
}
/* Some Setup packets don't have a data stage at all. */
static int handle_setup_with_no_data_stage(enum table_case tc,
struct usb_setup_packet *req)
{
uint8_t set_addr;
print_later("handle_setup_with_no_data_stage(%c)", "0ABCDE67"[tc],
0, 0, 0, 0);
switch (req->bRequest) {
case USB_REQ_SET_ADDRESS:
/*
* Set the address after the IN packet handshake.
*
* From the USB 2.0 spec, section 9.4.6:
*
* As noted elsewhere, requests actually may result in
* up to three stages. In the first stage, the Setup
* packet is sent to the device. In the optional second
* stage, data is transferred between the host and the
* device. In the final stage, status is transferred
* between the host and the device. The direction of
* data and status transfer depends on whether the host
* is sending data to the device or the device is
* sending data to the host. The Status stage transfer
* is always in the opposite direction of the Data
* stage. If there is no Data stage, the Status stage
* is from the device to the host.
*
* Stages after the initial Setup packet assume the
* same device address as the Setup packet. The USB
* device does not change its device address until
* after the Status stage of this request is completed
* successfully. Note that this is a difference between
* this request and all other requests. For all other
* requests, the operation indicated must be completed
* before the Status stage
*/
set_addr = req->wValue & 0xff;
/*
* NOTE: Now that we've said that, we don't do it. The
* hardware for this SoC knows that an IN packet will
* be following the SET ADDRESS, so it waits until it
* sees that happen before the address change takes
* effect. If we wait until after the IN packet to
* change the register, the hardware gets confused and
* doesn't respond to anything.
*/
GWRITE_FIELD(USB, DCFG, DEVADDR, set_addr);
CPRINTS("SETAD 0x%02x (%d)", set_addr, set_addr);
print_later("SETAD 0x%02x (%d)", set_addr, set_addr, 0, 0, 0);
device_state = DS_ADDRESS;
processed_update_counter = 1;
break;
case USB_REQ_SET_CONFIGURATION:
print_later("SETCFG 0x%x", req->wValue, 0, 0, 0, 0);
switch (req->wValue) {
case 0:
configuration_value = req->wValue;
device_state = DS_ADDRESS;
break;
case 1: /* Caution: Only one config descriptor TODAY */
/* TODO: All endpoints set to DATA0 toggle state */
configuration_value = req->wValue;
device_state = DS_CONFIGURED;
break;
default:
/* Nope. That's a paddlin. */
return -1;
}
break;
case USB_REQ_CLEAR_FEATURE:
case USB_REQ_SET_FEATURE:
/* TODO: Handle DEVICE_REMOTE_WAKEUP, ENDPOINT_HALT? */
print_later("SET_FEATURE/CLEAR_FEATURE. Whatever...",
0, 0, 0, 0, 0);
break;
default:
/* Anything else is unsupported */
return -1;
}
/* No data to transfer, go straight to the Status phase. */
return 0;
}