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| author | Dean Camera <dean@fourwalledcubicle.com> | 2013-03-18 17:18:11 +0000 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2013-03-18 17:18:11 +0000 |
| commit | be33d3a5156ea3fde221c9e174ad0405eb8d1f8d (patch) | |
| tree | b027f4af999f39ed4554270c089a003479be7af7 /Bootloaders/MassStorage/Lib/VirtualFAT.c | |
| parent | f8a1dc7424cd83f2f3e87274010d379a661b76e4 (diff) | |
| download | lufa-be33d3a5156ea3fde221c9e174ad0405eb8d1f8d.tar.gz lufa-be33d3a5156ea3fde221c9e174ad0405eb8d1f8d.tar.bz2 lufa-be33d3a5156ea3fde221c9e174ad0405eb8d1f8d.zip | |
Update Mass Storage bootloader so that it can support devices with only 4KB bootloader sections by creating a special AUX section before the real bootloader section to store part of the bootloader code.
Diffstat (limited to 'Bootloaders/MassStorage/Lib/VirtualFAT.c')
| -rw-r--r-- | Bootloaders/MassStorage/Lib/VirtualFAT.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/Bootloaders/MassStorage/Lib/VirtualFAT.c b/Bootloaders/MassStorage/Lib/VirtualFAT.c index ee0107c1b..41c661ed3 100644 --- a/Bootloaders/MassStorage/Lib/VirtualFAT.c +++ b/Bootloaders/MassStorage/Lib/VirtualFAT.c @@ -151,26 +151,28 @@ static void WriteVirtualBlock(const uint16_t BlockNumber) if ((BlockNumber >= 4) && (BlockNumber < (4 + FILE_SECTORS(FIRMWARE_FILE_SIZE_BYTES)))) { + #if (FLASHEND > 0xFFFF) uint32_t WriteFlashAddress = (uint32_t)(BlockNumber - 4) * SECTOR_SIZE_BYTES; + #else + uint16_t WriteFlashAddress = (uint16_t)(BlockNumber - 4) * SECTOR_SIZE_BYTES; + #endif for (uint16_t i = 0; i < SECTOR_SIZE_BYTES; i += 2) { if ((WriteFlashAddress % SPM_PAGESIZE) == 0) { /* Erase the given FLASH page, ready to be programmed */ - boot_page_erase(WriteFlashAddress); - boot_spm_busy_wait(); + BootloaderAPI_ErasePage(WriteFlashAddress); } /* Write the next data word to the FLASH page */ - boot_page_fill(WriteFlashAddress, (BlockBuffer[i + 1] << 8) | BlockBuffer[i]); + BootloaderAPI_FillWord(WriteFlashAddress, (BlockBuffer[i + 1] << 8) | BlockBuffer[i]); WriteFlashAddress += 2; if ((WriteFlashAddress % SPM_PAGESIZE) == 0) { /* Write the filled FLASH page to memory */ - boot_page_write(WriteFlashAddress - SPM_PAGESIZE); - boot_spm_busy_wait(); + BootloaderAPI_WritePage(WriteFlashAddress - SPM_PAGESIZE); } } } @@ -219,10 +221,17 @@ static void ReadVirtualBlock(const uint16_t BlockNumber) default: /* Blocks 4 onwards: Data allocation section */ if ((BlockNumber >= 4) && (BlockNumber < (4 + FILE_SECTORS(FIRMWARE_FILE_SIZE_BYTES)))) { + #if (FLASHEND > 0xFFFF) uint32_t ReadFlashAddress = (uint32_t)(BlockNumber - 4) * SECTOR_SIZE_BYTES; for (uint16_t i = 0; i < SECTOR_SIZE_BYTES; i++) BlockBuffer[i] = pgm_read_byte_far(ReadFlashAddress++); + #else + uint16_t ReadFlashAddress = (uint16_t)(BlockNumber - 4) * SECTOR_SIZE_BYTES; + + for (uint16_t i = 0; i < SECTOR_SIZE_BYTES; i++) + BlockBuffer[i] = pgm_read_byte(ReadFlashAddress++); + #endif } break; @@ -237,8 +246,8 @@ static void ReadVirtualBlock(const uint16_t BlockNumber) * PC via the USB Mass Storage interface. * * \param[in] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state - * \param[in] BlockAddress Data block starting address for the write sequence - * \param[in] TotalBlocks Number of blocks of data to write + * \param[in] BlockAddress Data block starting address for the write sequence + * \param[in] TotalBlocks Number of blocks of data to write */ void VirtualFAT_WriteBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo, const uint32_t BlockAddress, @@ -256,8 +265,8 @@ void VirtualFAT_WriteBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo, * to the host PC via the USB Mass Storage interface. * * \param[in] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state - * \param[in] BlockAddress Data block starting address for the read sequence - * \param[in] TotalBlocks Number of blocks of data to read + * \param[in] BlockAddress Data block starting address for the read sequence + * \param[in] TotalBlocks Number of blocks of data to read */ void VirtualFAT_ReadBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo, const uint32_t BlockAddress, |