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software/libbase/spisdcard: fix 4-byte FAT fields on 64-bit CPUs 

On 64-bit architectures (e.g., Rocket), 'unsigned long' means
eight (not four) bytes. Use 'unsigned int' wherever a FAT data
structure requires a four-byte field!

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
This commit is contained in:
Gabriel Somlo 2020-03-19 21:50:54 -04:00
parent 1f90abea8e
commit a33916bc6b
1 changed files with 8 additions and 8 deletions
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16
litex/soc/software/libbase/spisdcard.c
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@ -228,7 +228,7 @@ unsigned char spi_sdcard_goidle(void)
r=spi_read_byte();
// CMD16 - Set SD CARD block size to 512 - Sector Size for the SD CARD
// Command Sequence is DUMMY=0xff (512 as unsigned long = 0x00000200) 0x00 0x00 0x02 0x00 CRC=0xff
// Command Sequence is DUMMY=0xff (512 as unsigned int = 0x00000200) 0x00 0x00 0x02 0x00 CRC=0xff
// Expected R1 response is 0x00 indicating SD CARD is READY
spi_write_byte( 0xff ); spi_write_byte( 0x50 ); spi_write_byte( 0x00 ); spi_write_byte( 0x00 ); spi_write_byte( 0x02 ); spi_write_byte( 0x00 ); spi_write_byte( 0xff );
r=spi_read_rbyte();
@ -294,8 +294,8 @@ typedef struct {
unsigned char start_chs[3];
unsigned char partition_type;
unsigned char end_chs[3];
unsigned long start_sector;
unsigned long length_sectors;
unsigned int start_sector;
unsigned int length_sectors;
} __attribute((packed)) PartitionTable;
PartitionTable sdCardPartition;
@ -314,13 +314,13 @@ typedef struct {
unsigned short fat_size_sectors;
unsigned short sectors_per_track;
unsigned short number_of_heads;
unsigned long hidden_sectors;
unsigned long total_sectors_long;
unsigned int hidden_sectors;
unsigned int total_sectors_long;
unsigned char drive_number;
unsigned char current_head;
unsigned char boot_signature;
unsigned long volume_id;
unsigned int volume_id;
char volume_label[11];
char fs_type[8];
char boot_code[448];
@ -339,7 +339,7 @@ typedef struct {
unsigned short modify_time;
unsigned short modify_date;
unsigned short starting_cluster;
unsigned long file_size;
unsigned int file_size;
} __attribute((packed)) Fat16Entry;
Fat16Entry *sdCardFat16RootDir;
@ -510,7 +510,7 @@ unsigned char spi_sdcard_readFile(char *filename, char *ext, unsigned long addre
{
int i, n, sector;
unsigned short fileClusterStart;
unsigned long fileLength, bytesRemaining, clusterSectorStart;
unsigned int fileLength, bytesRemaining, clusterSectorStart;
unsigned short nameMatch;
printf("Reading File [%s.%s] into 0x%08x : ",filename, ext, address);