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-rw-r--r--firmware/src/dfu/dfu.c681
-rw-r--r--firmware/src/dfu/dfu.h77
2 files changed, 758 insertions, 0 deletions
diff --git a/firmware/src/dfu/dfu.c b/firmware/src/dfu/dfu.c
new file mode 100644
index 0000000..f50b564
--- /dev/null
+++ b/firmware/src/dfu/dfu.c
@@ -0,0 +1,681 @@
+/* USB Device Firmware Update Implementation for OpenPCD
+ * (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
+ *
+ * This ought to be compliant to the USB DFU Spec 1.0 as available from
+ * http://www.usb.org/developers/devclass_docs/usbdfu10.pdf
+ *
+ */
+
+#include <errno.h>
+#include <usb_ch9.h>
+#include <usb_dfu.h>
+#include <lib_AT91SAM7.h>
+
+#include <dfu/dfu.h>
+#include <os/pcd_enumerate.h>
+#include "../openpcd.h"
+
+/* If debug is enabled, we need to access debug functions from flash
+ * and therefore have to omit flashing */
+//#define DEBUG_DFU
+
+#ifdef DEBUG_DFU
+#define DEBUGE DEBUGP
+#define DEBUGI DEBUGP
+#else
+#define DEBUGE(x, args ...) do { } while (0)
+#define DEBUGI(x, args ...) do { } while (0)
+#endif
+
+
+static void __dfufunc udp_init(void)
+{
+ /* Set the PLL USB Divider */
+ AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1;
+
+ /* Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock */
+ AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;
+ AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);
+
+ /* Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO
+ * Set in PIO mode and Configure in Output */
+ AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPCD_PIO_UDP_PUP);
+}
+
+/* Send Data through the control endpoint */
+static void __dfufunc udp_ep0_send_data(const char *pData, u_int32_t length)
+{
+ AT91PS_UDP pUdp = AT91C_BASE_UDP;
+ u_int32_t cpt = 0;
+ AT91_REG csr;
+
+ DEBUGE("send_data: %u bytes ", length);
+
+ do {
+ cpt = MIN(length, 8);
+ length -= cpt;
+
+ while (cpt--)
+ pUdp->UDP_FDR[0] = *pData++;
+
+ if (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) {
+ pUdp->UDP_CSR[0] &= ~(AT91C_UDP_TXCOMP);
+ while (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) ;
+ }
+
+ pUdp->UDP_CSR[0] |= AT91C_UDP_TXPKTRDY;
+ do {
+ csr = pUdp->UDP_CSR[0];
+
+ /* Data IN stage has been stopped by a status OUT */
+ if (csr & AT91C_UDP_RX_DATA_BK0) {
+ pUdp->UDP_CSR[0] &= ~(AT91C_UDP_RX_DATA_BK0);
+ DEBUGE("stopped by status out ");
+ return;
+ }
+ } while (!(csr & AT91C_UDP_TXCOMP));
+
+ } while (length);
+
+ if (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) {
+ pUdp->UDP_CSR[0] &= ~(AT91C_UDP_TXCOMP);
+ while (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) ;
+ }
+}
+
+/* Send zero length packet through the control endpoint */
+static void __dfufunc udp_ep0_send_zlp(void)
+{
+ AT91PS_UDP pUdp = AT91C_BASE_UDP;
+ pUdp->UDP_CSR[0] |= AT91C_UDP_TXPKTRDY;
+ while (!(pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP)) ;
+ pUdp->UDP_CSR[0] &= ~(AT91C_UDP_TXCOMP);
+ while (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) ;
+}
+
+/* Stall the control endpoint */
+static void __dfufunc udp_ep0_send_stall(void)
+{
+ AT91PS_UDP pUdp = AT91C_BASE_UDP;
+ pUdp->UDP_CSR[0] |= AT91C_UDP_FORCESTALL;
+ while (!(pUdp->UDP_CSR[0] & AT91C_UDP_ISOERROR)) ;
+ pUdp->UDP_CSR[0] &= ~(AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR);
+ while (pUdp->UDP_CSR[0] & (AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR)) ;
+}
+
+
+static u_int8_t status;
+static u_int8_t *ptr;
+static __dfudata u_int32_t dfu_state;
+
+static int __dfufunc handle_dnload(u_int16_t val, u_int16_t len)
+{
+ volatile u_int32_t *p = (volatile u_int32_t *)ptr;
+
+ DEBUGE("download ");
+
+ if (len > AT91C_IFLASH_PAGE_SIZE) {
+ /* Too big */
+ dfu_state = DFU_STATE_dfuERROR;
+ status = DFU_STATUS_errADDRESS;
+ udp_ep0_send_stall();
+ return -EINVAL;
+ }
+ if (len & 0x3) {
+ dfu_state = DFU_STATE_dfuERROR;
+ status = DFU_STATUS_errADDRESS;
+ udp_ep0_send_stall();
+ return -EINVAL;
+ }
+ if (len == 0) {
+ dfu_state = DFU_STATE_dfuMANIFEST_SYNC;
+ return 0;
+ }
+#if 0
+ for (i = 0; i < len/4; i++)
+ p[i] =
+#endif
+
+ /* FIXME: get data packet from FIFO, (erase+)write flash */
+#ifndef DEBUG_DFU
+
+#endif
+
+ return 0;
+}
+
+static __dfufunc int handle_upload(u_int16_t val, u_int16_t len)
+{
+ DEBUGE("upload ");
+ if (len > AT91C_IFLASH_PAGE_SIZE
+ || ptr > AT91C_IFLASH_SIZE - 0x1000) {
+ /* Too big */
+ dfu_state = DFU_STATE_dfuERROR;
+ status = DFU_STATUS_errADDRESS;
+ udp_ep0_send_stall();
+ return -EINVAL;
+ }
+
+ if (ptr + len > AT91C_IFLASH_SIZE)
+ len = AT91C_IFLASH_SIZE - (u_int32_t) ptr;
+
+ udp_ep0_send_data((char *)ptr, len);
+ ptr+= len;
+
+ return len;
+}
+
+static __dfufunc void handle_getstatus(void)
+{
+ struct dfu_status dstat;
+
+ DEBUGE("getstatus ");
+
+ /* send status response */
+ dstat.bStatus = status;
+ dstat.bState = dfu_state;
+ dstat.iString = 0;
+ udp_ep0_send_data((char *)&dstat, sizeof(dstat));
+}
+
+static void __dfufunc handle_getstate(void)
+{
+ u_int8_t u8 = dfu_state;
+ DEBUGE("getstate ");
+ udp_ep0_send_data((char *)&u8, sizeof(u8));
+}
+
+/* callback function for DFU requests */
+int __dfufunc dfu_ep0_handler(u_int8_t req_type, u_int8_t req,
+ u_int16_t val, u_int16_t len)
+{
+ int rc;
+
+ DEBUGE("old_state = %u ", dfu_state);
+
+ switch (dfu_state) {
+ case DFU_STATE_appIDLE:
+ if (req != USB_REQ_DFU_DETACH)
+ goto send_stall;
+ dfu_state = DFU_STATE_appDETACH;
+ goto send_zlp;
+ break;
+ case DFU_STATE_appDETACH:
+ switch (req) {
+ case USB_REQ_DFU_GETSTATUS:
+ handle_getstatus();
+ break;
+ case USB_REQ_DFU_GETSTATE:
+ handle_getstate();
+ break;
+ default:
+ dfu_state = DFU_STATE_appIDLE;
+ goto send_stall;
+ break;
+ }
+ /* FIXME: implement timer to return to appIDLE */
+ break;
+ case DFU_STATE_dfuIDLE:
+ switch (req) {
+ case USB_REQ_DFU_DNLOAD:
+ if (len == 0) {
+ dfu_state = DFU_STATE_dfuERROR;
+ goto send_stall;
+ }
+ handle_dnload(val, len);
+ break;
+ case USB_REQ_DFU_UPLOAD:
+ ptr = 0x00101000; /* Flash base address for app */
+ dfu_state = DFU_STATE_dfuUPLOAD_IDLE;
+ handle_upload(val, len);
+ break;
+ case USB_REQ_DFU_ABORT:
+ /* no zlp? */
+ goto send_zlp;
+ break;
+ case USB_REQ_DFU_GETSTATUS:
+ handle_getstatus();
+ break;
+ case USB_REQ_DFU_GETSTATE:
+ handle_getstate();
+ break;
+ default:
+ dfu_state = DFU_STATE_dfuERROR;
+ goto send_stall;
+ break;
+ }
+ break;
+ case DFU_STATE_dfuDNLOAD_SYNC:
+ switch (req) {
+ case USB_REQ_DFU_GETSTATUS:
+ handle_getstatus();
+ /* FIXME: state transition depending on block completeness */
+ break;
+ case USB_REQ_DFU_GETSTATE:
+ handle_getstate();
+ break;
+ default:
+ dfu_state = DFU_STATE_dfuERROR;
+ goto send_stall;
+ }
+ break;
+ case DFU_STATE_dfuDNBUSY:
+ dfu_state = DFU_STATE_dfuERROR;
+ goto send_stall;
+ break;
+ case DFU_STATE_dfuDNLOAD_IDLE:
+ switch (req) {
+ case USB_REQ_DFU_DNLOAD:
+ if (handle_dnload(val, len))
+ /* FIXME: state transition */
+ break;
+ case USB_REQ_DFU_ABORT:
+ dfu_state = DFU_STATE_dfuIDLE;
+ goto send_zlp;
+ break;
+ case USB_REQ_DFU_GETSTATUS:
+ handle_getstatus();
+ break;
+ case USB_REQ_DFU_GETSTATE:
+ handle_getstate();
+ break;
+ default:
+ dfu_state = DFU_STATE_dfuERROR;
+ goto send_stall;
+ break;
+ }
+ break;
+ case DFU_STATE_dfuMANIFEST_SYNC:
+ switch (req) {
+ case USB_REQ_DFU_GETSTATUS:
+ break;
+ case USB_REQ_DFU_GETSTATE:
+ handle_getstate();
+ break;
+ default:
+ dfu_state = DFU_STATE_dfuERROR;
+ goto send_stall;
+ break;
+ }
+ break;
+ case DFU_STATE_dfuMANIFEST:
+ dfu_state = DFU_STATE_dfuERROR;
+ goto send_stall;
+ break;
+ case DFU_STATE_dfuMANIFEST_WAIT_RST:
+ /* we should never go here */
+ break;
+ case DFU_STATE_dfuUPLOAD_IDLE:
+ switch (req) {
+ case USB_REQ_DFU_UPLOAD:
+ /* state transition if less data then requested */
+ rc = handle_upload(val, len);
+ if (rc >= 0 && rc < len)
+ dfu_state = DFU_STATE_dfuIDLE;
+ break;
+ case USB_REQ_DFU_ABORT:
+ dfu_state = DFU_STATE_dfuIDLE;
+ /* no zlp? */
+ goto send_zlp;
+ break;
+ case USB_REQ_DFU_GETSTATUS:
+ handle_getstatus();
+ break;
+ case USB_REQ_DFU_GETSTATE:
+ handle_getstate();
+ break;
+ default:
+ dfu_state = DFU_STATE_dfuERROR;
+ goto send_stall;
+ break;
+ }
+ break;
+ case DFU_STATE_dfuERROR:
+ switch (req) {
+ case USB_REQ_DFU_GETSTATUS:
+ handle_getstatus();
+ break;
+ case USB_REQ_DFU_GETSTATE:
+ handle_getstate();
+ break;
+ case USB_REQ_DFU_CLRSTATUS:
+ dfu_state = DFU_STATE_dfuIDLE;
+ /* no zlp? */
+ goto send_zlp;
+ break;
+ default:
+ dfu_state = DFU_STATE_dfuERROR;
+ goto send_stall;
+ break;
+ }
+ break;
+ }
+
+ DEBUGE("OK new_state = %u\r\n", dfu_state);
+ return 0;
+
+send_stall:
+ udp_ep0_send_stall();
+ DEBUGE("STALL new_state = %u\r\n", dfu_state);
+ return -EINVAL;
+
+send_zlp:
+ udp_ep0_send_zlp();
+ DEBUGE("ZLP new_state = %u\r\n", dfu_state);
+ return 0;
+}
+static u_int8_t cur_config;
+
+/* USB DFU Device descriptor in DFU mode */
+__dfustruct const struct usb_device_descriptor dfu_dev_descriptor = {
+ .bLength = USB_DT_DEVICE_SIZE,
+ .bDescriptorType = USB_DT_DEVICE,
+ .bcdUSB = 0x0100,
+ .bDeviceClass = 0x00,
+ .bDeviceSubClass = 0x00,
+ .bDeviceProtocol = 0x00,
+ .bMaxPacketSize0 = 8,
+ .idVendor = OPENPCD_VENDOR_ID,
+ .idProduct = OPENPCD_PRODUCT_ID,
+ .bcdDevice = 0x0000,
+ .iManufacturer = 0x00,
+ .iProduct = 0x00,
+ .iSerialNumber = 0x00,
+ .bNumConfigurations = 0x01,
+};
+
+/* USB DFU Config descriptor in DFU mode */
+__dfustruct const struct _dfu_desc dfu_cfg_descriptor = {
+ .ucfg = {
+ .bLength = USB_DT_CONFIG_SIZE,
+ .bDescriptorType = USB_DT_CONFIG,
+ .wTotalLength = USB_DT_CONFIG_SIZE +
+ 2* USB_DT_INTERFACE_SIZE +
+ USB_DT_DFU_SIZE,
+ .bNumInterfaces = 1,
+ .bConfigurationValue = 1,
+ .iConfiguration = 0,
+ .bmAttributes = USB_CONFIG_ATT_ONE,
+ .bMaxPower = 100,
+ },
+ .uif[0] = {
+ .bLength = USB_DT_INTERFACE_SIZE,
+ .bDescriptorType = USB_DT_INTERFACE,
+ .bInterfaceNumber = 0x00,
+ .bAlternateSetting = 0x00,
+ .bNumEndpoints = 0x00,
+ .bInterfaceClass = 0xfe,
+ .bInterfaceSubClass = 0x01,
+ .bInterfaceProtocol = 0x02,
+ .iInterface = 0,
+ },
+ .uif[1] = {
+ .bLength = USB_DT_INTERFACE_SIZE,
+ .bDescriptorType = USB_DT_INTERFACE,
+ .bInterfaceNumber = 0x00,
+ .bAlternateSetting = 0x01,
+ .bNumEndpoints = 0x00,
+ .bInterfaceClass = 0xfe,
+ .bInterfaceSubClass = 0x01,
+ .bInterfaceProtocol = 0x02,
+ .iInterface = 0,
+ },
+
+ .func_dfu = DFU_FUNC_DESC,
+};
+
+
+/* minimal USB EP0 handler in DFU mode */
+static __dfufunc void dfu_udp_ep0_handler(void)
+{
+ AT91PS_UDP pUDP = AT91C_BASE_UDP;
+ u_int8_t bmRequestType, bRequest;
+ u_int16_t wValue, wIndex, wLength, wStatus;
+ u_int32_t csr = pUDP->UDP_CSR[0];
+
+ DEBUGE("CSR=0x%04x ", csr);
+
+ if (csr & AT91C_UDP_STALLSENT) {
+ DEBUGE("ACK_STALLSENT ");
+ pUDP->UDP_CSR[0] = ~AT91C_UDP_STALLSENT;
+ }
+
+ if (csr & AT91C_UDP_RX_DATA_BK0) {
+ DEBUGE("ACK_BANK0 ");
+ pUDP->UDP_CSR[0] &= ~AT91C_UDP_RX_DATA_BK0;
+ }
+
+ if (!(csr & AT91C_UDP_RXSETUP)) {
+ DEBUGE("no setup packet ");
+ return;
+ }
+
+ DEBUGE("len=%d ", csr >> 16);
+ if (csr >> 16 == 0) {
+ DEBUGE("empty packet ");
+ return;
+ }
+
+ bmRequestType = pUDP->UDP_FDR[0];
+ bRequest = pUDP->UDP_FDR[0];
+ wValue = (pUDP->UDP_FDR[0] & 0xFF);
+ wValue |= (pUDP->UDP_FDR[0] << 8);
+ wIndex = (pUDP->UDP_FDR[0] & 0xFF);
+ wIndex |= (pUDP->UDP_FDR[0] << 8);
+ wLength = (pUDP->UDP_FDR[0] & 0xFF);
+ wLength |= (pUDP->UDP_FDR[0] << 8);
+
+ DEBUGE("bmRequestType=0x%2x ", bmRequestType);
+
+ if (bmRequestType & 0x80) {
+ DEBUGE("DATA_IN=1 ");
+ pUDP->UDP_CSR[0] |= AT91C_UDP_DIR;
+ while (!(pUDP->UDP_CSR[0] & AT91C_UDP_DIR)) ;
+ }
+ pUDP->UDP_CSR[0] &= ~AT91C_UDP_RXSETUP;
+ while ((pUDP->UDP_CSR[0] & AT91C_UDP_RXSETUP)) ;
+
+ /* Handle supported standard device request Cf Table 9-3 in USB
+ * speciication Rev 1.1 */
+ switch ((bRequest << 8) | bmRequestType) {
+ case STD_GET_DESCRIPTOR:
+ DEBUGE("GET_DESCRIPTOR ");
+ if (wValue == 0x100) {
+ /* Return Device Descriptor */
+ udp_ep0_send_data((const char *)
+ &dfu_dev_descriptor,
+ MIN(sizeof(dfu_dev_descriptor),
+ wLength));
+ } else if (wValue == 0x200) {
+ /* Return Configuration Descriptor */
+ udp_ep0_send_data((const char *)
+ &dfu_cfg_descriptor,
+ MIN(sizeof(dfu_cfg_descriptor),
+ wLength));
+#if 0
+ } else if (wValue == 0x400) {
+ /* Return Interface descriptor */
+ if (wIndex != 0x01)
+ udp_ep0_send_stall();
+ udp_ep0_send_data((const char *)
+ &dfu_if_descriptor,
+ MIN(sizeof(dfu_if_descriptor),
+ wLength));
+#endif
+ } else
+ udp_ep0_send_stall();
+ break;
+ case STD_SET_ADDRESS:
+ DEBUGE("SET_ADDRESS ");
+ udp_ep0_send_zlp();
+ pUDP->UDP_FADDR = (AT91C_UDP_FEN | wValue);
+ pUDP->UDP_GLBSTATE = (wValue) ? AT91C_UDP_FADDEN : 0;
+ break;
+ case STD_SET_CONFIGURATION:
+ DEBUGE("SET_CONFIG ");
+ if (wValue)
+ DEBUGE("VALUE!=0 ");
+ cur_config = wValue;
+ udp_ep0_send_zlp();
+ pUDP->UDP_GLBSTATE =
+ (wValue) ? AT91C_UDP_CONFG : AT91C_UDP_FADDEN;
+ pUDP->UDP_CSR[1] =
+ (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) :
+ 0;
+ pUDP->UDP_CSR[2] =
+ (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0;
+ pUDP->UDP_CSR[3] =
+ (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN) : 0;
+ pUDP->UDP_IER = (AT91C_UDP_EPINT0|AT91C_UDP_EPINT1|
+ AT91C_UDP_EPINT2|AT91C_UDP_EPINT3);
+ break;
+ case STD_GET_CONFIGURATION:
+ DEBUGE("GET_CONFIG ");
+ udp_ep0_send_data((char *)&(cur_config),
+ sizeof(cur_config));
+ break;
+ case STD_GET_STATUS_ZERO:
+ DEBUGE("GET_STATUS_ZERO ");
+ wStatus = 0;
+ udp_ep0_send_data((char *)&wStatus, sizeof(wStatus));
+ break;
+ case STD_GET_STATUS_INTERFACE:
+ DEBUGE("GET_STATUS_INTERFACE ");
+ wStatus = 0;
+ udp_ep0_send_data((char *)&wStatus, sizeof(wStatus));
+ break;
+ case STD_GET_STATUS_ENDPOINT:
+ DEBUGE("GET_STATUS_ENDPOINT(EPidx=%u) ", wIndex&0x0f);
+ wStatus = 0;
+ wIndex &= 0x0F;
+ if ((pUDP->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex == 0)) {
+ wStatus =
+ (pUDP->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;
+ udp_ep0_send_data((char *)&wStatus,
+ sizeof(wStatus));
+ } else if ((pUDP->UDP_GLBSTATE & AT91C_UDP_FADDEN)
+ && (wIndex == 0)) {
+ wStatus =
+ (pUDP->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;
+ udp_ep0_send_data((char *)&wStatus,
+ sizeof(wStatus));
+ } else
+ udp_ep0_send_stall();
+ break;
+ case STD_SET_FEATURE_ZERO:
+ DEBUGE("SET_FEATURE_ZERO ");
+ udp_ep0_send_stall();
+ break;
+ case STD_SET_FEATURE_INTERFACE:
+ DEBUGE("SET_FEATURE_INTERFACE ");
+ udp_ep0_send_zlp();
+ break;
+ case STD_SET_FEATURE_ENDPOINT:
+ DEBUGE("SET_FEATURE_ENDPOINT ");
+ udp_ep0_send_stall();
+ break;
+ case STD_CLEAR_FEATURE_ZERO:
+ DEBUGE("CLEAR_FEATURE_ZERO ");
+ udp_ep0_send_stall();
+ break;
+ case STD_CLEAR_FEATURE_INTERFACE:
+ DEBUGE("CLEAR_FEATURE_INTERFACE ");
+ udp_ep0_send_zlp();
+ break;
+ case STD_CLEAR_FEATURE_ENDPOINT:
+ DEBUGE("CLEAR_FEATURE_ENDPOINT(EPidx=%u) ", wIndex & 0x0f);
+ udp_ep0_send_stall();
+ break;
+ case STD_SET_INTERFACE:
+ DEBUGE("SET INTERFACE ");
+ udp_ep0_send_stall();
+ break;
+ default:
+ DEBUGE("DEFAULT(req=0x%02x, type=0x%02x) ", bRequest, bmRequestType);
+ if ((bmRequestType & 0x3f) == USB_TYPE_DFU) {
+ dfu_ep0_handler(bmRequestType, bRequest, wValue, wLength);
+ } else
+ udp_ep0_send_stall();
+ break;
+ }
+}
+
+/* minimal USB IRQ handler in DFU mode */
+static __dfufunc void dfu_udp_irq(void)
+{
+ AT91PS_UDP pUDP = AT91C_BASE_UDP;
+ AT91_REG isr = pUDP->UDP_ISR;
+
+ if (isr & AT91C_UDP_ENDBUSRES) {
+ pUDP->UDP_IER = AT91C_UDP_EPINT0;
+ /* reset all endpoints */
+ pUDP->UDP_RSTEP = (unsigned int)-1;
+ pUDP->UDP_RSTEP = 0;
+ /* Enable the function */
+ pUDP->UDP_FADDR = AT91C_UDP_FEN;
+ /* Configure endpoint 0 */
+ pUDP->UDP_CSR[0] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_CTRL);
+ cur_config = 0;
+ }
+
+ if (isr & AT91C_UDP_EPINT0)
+ dfu_udp_ep0_handler();
+
+ /* clear all interrupts */
+ pUDP->UDP_ICR = isr;
+
+ AT91F_AIC_ClearIt(AT91C_BASE_AIC, AT91C_ID_UDP);
+}
+
+/* this is only called once before DFU mode, no __dfufunc required */
+static void dfu_switch(void)
+{
+ AT91PS_AIC pAic = AT91C_BASE_AIC;
+
+ DEBUGE("Switching to DFU mode ");
+
+ pAic->AIC_SVR[AT91C_ID_UDP] = (unsigned int) &dfu_udp_irq;
+ dfu_state = DFU_STATE_dfuIDLE;
+}
+
+void __dfufunc dfu_main(void)
+{
+ udp_init();
+
+ /* This implements
+ AT91F_AIC_ConfigureIt(AT91C_BASE_AIC, AT91C_ID_UDP,
+ OPENPCD_IRQ_PRIO_UDP,
+ AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL, dfu_udp_irq);
+ */
+ AT91PS_AIC pAic = AT91C_BASE_AIC;
+ pAic->AIC_IDCR = 1 << AT91C_ID_UDP;
+ pAic->AIC_SVR[AT91C_ID_UDP] = (unsigned int) &dfu_udp_irq;
+ pAic->AIC_SMR[AT91C_ID_UDP] = AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL |
+ OPENPCD_IRQ_PRIO_UDP;
+ pAic->AIC_ICCR = 1 << AT91C_ID_UDP;
+
+ AT91F_AIC_EnableIt(AT91C_BASE_AIC, AT91C_ID_UDP);
+
+ /* End-of-Bus-Reset is always enabled */
+
+ /* Clear for set the Pull up resistor */
+ AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPCD_PIO_UDP_PUP);
+
+ /* do nothing, since all of DFU is interrupt driven */
+ while (1) ;
+}
+
+const struct dfuapi __dfufunctab dfu_api = {
+ .udp_init = &udp_init,
+ .ep0_send_data = &udp_ep0_send_data,
+ .ep0_send_zlp = &udp_ep0_send_zlp,
+ .ep0_send_stall = &udp_ep0_send_stall,
+ .dfu_ep0_handler = &dfu_ep0_handler,
+ .dfu_switch = &dfu_switch,
+ .dfu_state = &dfu_state,
+ .dfu_dev_descriptor = &dfu_dev_descriptor,
+ .dfu_cfg_descriptor = &dfu_cfg_descriptor,
+};
+
+/* just for testing */
+int foo = 12345;
diff --git a/firmware/src/dfu/dfu.h b/firmware/src/dfu/dfu.h
new file mode 100644
index 0000000..992a4f2
--- /dev/null
+++ b/firmware/src/dfu/dfu.h
@@ -0,0 +1,77 @@
+#ifndef _DFU_H
+#define _DFU_H
+
+/* USB Device Firmware Update Implementation for OpenPCD
+ * (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
+ *
+ * This ought to be compliant to the USB DFU Spec 1.0 as available from
+ * http://www.usb.org/developers/devclass_docs/usbdfu10.pdf
+ *
+ */
+
+#include <sys/types.h>
+#include <usb_ch9.h>
+#include <usb_dfu.h>
+
+/* USB DFU functional descriptor */
+#define DFU_FUNC_DESC { \
+ .bLength = USB_DT_DFU_SIZE, \
+ .bDescriptorType = USB_DT_DFU, \
+ .bmAttributes = USB_DFU_CAN_UPLOAD | USB_DFU_CAN_DOWNLOAD, \
+ .wDetachTimeOut = 0xff00, \
+ .wTransferSize = AT91C_IFLASH_PAGE_SIZE, \
+ .bcdDFUVersion = 0x0100, \
+}
+
+/* USB Interface descriptor in Runtime mode */
+#define DFU_RT_IF_DESC { \
+ .bLength = USB_DT_INTERFACE_SIZE, \
+ .bDescriptorType = USB_DT_INTERFACE, \
+ .bInterfaceNumber = 0x01, \
+ .bAlternateSetting = 0x00, \
+ .bNumEndpoints = 0x00, \
+ .bInterfaceClass = 0xfe, \
+ .bInterfaceSubClass = 0x01, \
+ .bInterfaceProtocol = 0x01, \
+ .iInterface = 1, \
+}
+
+#define __dfufunctab __attribute__ ((section (".dfu.functab")))
+#define __dfudata __attribute__ ((section (".data.shared")))
+#define __dfufunc
+#define __dfustruct const
+
+#if 0
+extern void __dfufunc udp_ep0_send_data(const char *data, u_int32_t length);
+extern void __dfufunc udp_ep0_send_zlp(void);
+extern void __dfufunc udp_ep0_send_stall(void);
+extern __dfustruct struct usb_device_descriptor dfu_dev_descriptor;
+extern __dfustruct struct _dfu_desc dfu_cfg_descriptor;
+extern void dfu_switch(void);
+extern int __dfufunc dfu_ep0_handler(u_int8_t req_type, u_int8_t req,
+ u_int16_t val, u_int16_t len);
+extern static u_int8_t dfu_state;
+struct udp_pcd;
+#endif
+
+struct _dfu_desc {
+ struct usb_config_descriptor ucfg;
+ struct usb_interface_descriptor uif[2];
+ struct usb_dfu_func_descriptor func_dfu;
+};
+
+struct dfuapi {
+ void (*udp_init)(void);
+ void (*ep0_send_data)(const char *data, u_int32_t len);
+ void (*ep0_send_zlp)(void);
+ void (*ep0_send_stall)(void);
+ int (*dfu_ep0_handler)(u_int8_t req_type, u_int8_t req,
+ u_int16_t val, u_int16_t len);
+ void (*dfu_switch)(void);
+ u_int8_t *dfu_state;
+ const struct usb_device_descriptor *dfu_dev_descriptor;
+ const struct _dfu_desc *dfu_cfg_descriptor;
+};
+
+
+#endif /* _DFU_H */
personal git repositories of Harald Welte. Your mileage may vary