diff options
Diffstat (limited to 'firmware/src/dfu')
| -rw-r--r-- | firmware/src/dfu/dfu.c | 38 |
1 files changed, 28 insertions, 10 deletions
diff --git a/firmware/src/dfu/dfu.c b/firmware/src/dfu/dfu.c index 09c8784..c5f706e 100644 --- a/firmware/src/dfu/dfu.c +++ b/firmware/src/dfu/dfu.c @@ -31,6 +31,8 @@ #include <os/pcd_enumerate.h> #include "../openpcd.h" +#define SAM7DFU_SIZE 0x1000 + /* If debug is enabled, we need to access debug functions from flash * and therefore have to omit flashing */ #define DEBUG_DFU @@ -56,8 +58,8 @@ static void __dfufunc udp_init(void) 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 */ + /* 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); } @@ -150,8 +152,8 @@ static void __dfufunc udp_ep0_send_stall(void) static u_int8_t status; -static u_int8_t *ptr = (u_int8_t *)0x00101000; -static __dfudata u_int32_t dfu_state; +static u_int8_t *ptr = AT91C_IFLASH + SAM7DFU_SIZE; +static __dfudata u_int32_t dfu_state = DFU_STATE_appIDLE; static u_int8_t pagebuf[AT91C_IFLASH_PAGE_SIZE]; static u_int16_t page_from_ramaddr(const void *addr) @@ -179,7 +181,8 @@ static int __dfufunc handle_dnload(u_int16_t val, u_int16_t len) DEBUGE("download "); if (len > AT91C_IFLASH_PAGE_SIZE) { - /* Too big */ + /* Too big. Not that we'd really care, but it's a + * DFU protocol violation */ dfu_state = DFU_STATE_dfuERROR; status = DFU_STATUS_errADDRESS; udp_ep0_send_stall(); @@ -196,6 +199,12 @@ static int __dfufunc handle_dnload(u_int16_t val, u_int16_t len) dfu_state = DFU_STATE_dfuMANIFEST_SYNC; return 0; } + if (ptr + len > AT91C_IFLASH + AT91C_IFLASH_SIZE) { + dfu_state = DFU_STATE_dfuERROR; + status = DFU_STATUS_errADDRESS; + udp_ep0_send_stall(); + return -EINVAL; + } udp_ep0_recv_data(pagebuf, sizeof(pagebuf)); @@ -234,8 +243,8 @@ static __dfufunc int handle_upload(u_int16_t val, u_int16_t len) return -EINVAL; } - if (ptr + len > AT91C_IFLASH_SIZE) - len = AT91C_IFLASH_SIZE - (u_int32_t) ptr; + if (ptr + len > AT91C_IFLASH + AT91C_IFLASH_SIZE) + len = AT91C_IFLASH + AT91C_IFLASH_SIZE - (u_int32_t) ptr; udp_ep0_send_data((char *)ptr, len); ptr+= len; @@ -273,6 +282,7 @@ static __dfufunc void handle_getstatus(void) dstat.bStatus = status; dstat.bState = dfu_state; dstat.iString = 0; + /* FIXME: set dstat.bwPollTimeout */ udp_ep0_send_data((char *)&dstat, sizeof(dstat)); } @@ -322,11 +332,12 @@ int __dfufunc dfu_ep0_handler(u_int8_t req_type, u_int8_t req, dfu_state = DFU_STATE_dfuERROR; goto send_stall; } + ptr = AT91C_IFLASH + SAM7DFU_SIZE; handle_dnload(val, len); dfu_state = DFU_STATE_dfuDNLOAD_SYNC; break; case USB_REQ_DFU_UPLOAD: - ptr = 0x00101000; /* Flash base address for app */ + ptr = AT91C_IFLASH + SAM7DFU_SIZE; dfu_state = DFU_STATE_dfuUPLOAD_IDLE; handle_upload(val, len); break; @@ -697,13 +708,16 @@ static __dfufunc void dfu_udp_ep0_handler(void) udp_ep0_send_stall(); break; default: - DEBUGE("DEFAULT(req=0x%02x, type=0x%02x) ", bRequest, bmRequestType); + DEBUGE("DEFAULT(req=0x%02x, type=0x%02x) ", + bRequest, bmRequestType); if ((bmRequestType & 0x3f) == USB_TYPE_DFU) { - dfu_ep0_handler(bmRequestType, bRequest, wValue, wLength); + dfu_ep0_handler(bmRequestType, bRequest, + wValue, wLength); } else udp_ep0_send_stall(); break; } + DEBUGE("\r\n"); } /* minimal USB IRQ handler in DFU mode */ @@ -747,9 +761,12 @@ static void dfu_switch(void) void __dfufunc dfu_main(void) { AT91F_DBGU_Init(); + DEBUGE("sam7dfu startup\r\n"); udp_init(); + dfu_state = DFU_STATE_dfuIDLE; + /* This implements AT91F_AIC_ConfigureIt(AT91C_BASE_AIC, AT91C_ID_UDP, OPENPCD_IRQ_PRIO_UDP, @@ -771,6 +788,7 @@ void __dfufunc dfu_main(void) flash_init(); + DEBUGE("sam7dfu entering main loop\r\n"); /* do nothing, since all of DFU is interrupt driven */ while (1) ; } |