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atsam: Add support for USB on SAM3X

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Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2019-01-19 11:51:46 -05:00
parent d4790356da
commit efd1bf5e04
5 changed files with 268 additions and 26 deletions
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23
src/atsam/sam4_usb.c
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@@ -159,29 +159,6 @@ usb_set_configure(void)
UDP->UDP_GLB_STAT |= UDP_GLB_STAT_CONFG;
}
#if CONFIG_MACH_SAM4S8C
#define EFC_HW EFC0
#elif CONFIG_MACH_SAM4E8E
#define EFC_HW EFC
#endif
void noinline __aligned(16) // align for predictable flash code access
usb_request_bootloader(void)
{
irq_disable();
// Request boot from ROM (instead of boot from flash)
while ((EFC_HW->EEFC_FSR & EEFC_FSR_FRDY) == 0)
;
EFC_HW->EEFC_FCR = (EEFC_FCR_FCMD_CGPB | EEFC_FCR_FARG(1)
| EEFC_FCR_FKEY_PASSWD);
while ((EFC_HW->EEFC_FSR & EEFC_FSR_FRDY) == 0)
;
// Reboot
RSTC->RSTC_CR = RSTC_CR_KEY(0xA5) | RSTC_CR_PROCRST | RSTC_CR_PERRST;
for (;;)
;
}
void
usbserial_init(void)
{