Replacing the RL-FlashFS

Hi all,

I am using the MCBSTR9 board to development SD/MMC support with support for bigger memory cards.

The RL-FlashFS only supports up to 4GBytes of SD/MMC card. I need a file-system that support larger memory cards, i.e., 8GB or 16GB. Without the RL-FlashFS source code, my hands are pretty much tied so there are a few questions.

1) Is the source for the RL-FlashFS available so I can make some modifications to support SD/MMC cards greater than 4GB?

2) If the answer is no to question 1), I was looking to configure the SPI to do my only file system and referencing Keil's source for SPI programming sequence for configurationt the block sizes and etc. Here's a sample function from Keil:

U32 cnt;
U8 sr;

while (sz) {

cnt = PAGE_SZ - (adr & (PAGE_SZ - 1));

if (cnt > sz) cnt = sz;

/* Write Enable */

spi_ss (0);

spi_send (SPI_WRITE_ENABLE);

spi_ss (1);

/* Program Page */

spi_ss (0);

spi_send (SPI_PAGE_PROGRAM);

spi_send ((U8)(adr >> 16));

spi_send ((U8)(adr >> 8));

spi_send ((U8)(adr >> 0));

adr += cnt;

sz -= cnt;

while (cnt--) {

spi_send (*buf++);

}

spi_ss (1);

/* Wait until done */

spi_ss (0);

spi_send (SPI_READ_SR);

do {

sr = spi_send (0xFF);

} while (sr & SR_WIP);

spi_ss (1);

/* Check for Error */

if (sr & SR_P_FAIL) {

spi_ss (0);

spi_send (SPI_CLEAR_SR_FLAGS);

spi_ss (1);

return (1);

} }

The only problem with this code from the on-line documentation is that I don't have the defines, i.e., SPI_WRITE_ENABLE, SPI_PAGE_PROGRAM, SPI_CLEAR_SR_FLAGS, etc. Are these defines available somewhere?

3) Is there a better way to achieve this?

Thanks,
Tom