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Print out information about the sd card filesystem.

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Prints out all of the parameter blocks for the SD card.
This commit is contained in:
Byron Lathi
2022-04-14 13:50:14 -05:00
parent 3c68e4584f
commit 7df0b67b12
1 changed files with 39 additions and 4 deletions
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43
sw/main.c
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@@ -5,6 +5,7 @@
#include "uart.h" #include "uart.h"
#include "mapper.h" #include "mapper.h"
#include "sd_card.h" #include "sd_card.h"
#include "fat.h"
uint8_t buf[512]; uint8_t buf[512];
@@ -24,14 +25,19 @@ void sd_readblock(uint8_t addr) {
} }
for (i = 0; i < 512; i++){ for (i = 0; i < 512; i++){
cprintf("%c", buf[i]); if (i % 16 == 0)
cprintf("\n %2x: ", i);
cprintf("%2x ", buf[i]);
} }
cprintf("\n");
} }
int main() { int main() {
int i; int i;
uint8_t sw; uint8_t sw;
uint32_t resp; uint32_t resp;
ebpb_t* epbp;
char s[16]; char s[16];
s[15] = 0; s[15] = 0;
@@ -106,10 +112,39 @@ int main() {
cprintf("CMD13: %lx\n", resp); cprintf("CMD13: %lx\n", resp);
sd_readblock(0); sd_readblock(0);
sd_readblock(1);
sd_readblock(2);
sd_readblock(3);
epbp = (ebpb_t*)&buf[11];
cprintf("Bytes per sector: %d\n", epbp->bpb3.bpb2.bytes_per_sector);
cprintf("Sectors per cluster: %d\n", epbp->bpb3.bpb2.sectors_per_cluster);
cprintf("Reserved Sectors: %d\n", epbp->bpb3.bpb2.reserved_sectors);
cprintf("Fat Count: %d\n", epbp->bpb3.bpb2.fat_count);
cprintf("Max Dir Entries: %d\n", epbp->bpb3.bpb2.max_dir_entries);
cprintf("Total Sector Count: %d\n", epbp->bpb3.bpb2.total_sector_count);
cprintf("Media Descriptor: 0x%x\n", epbp->bpb3.bpb2.media_descriptor);
cprintf("Sectors per Fat: %d\n", epbp->bpb3.bpb2.sectors_per_fat);
cprintf("\n");
cprintf("Sectors per track: %d\n", epbp->bpb3.sectors_per_track);
cprintf("Head Count: %d\n", epbp->bpb3.head_count);
cprintf("Hidden Sector Count: %d\n", epbp->bpb3.hidden_sector_count);
cprintf("Logical Sector Count: %d\n", epbp->bpb3.logical_sector_count);
cprintf("Sectors per Fat: %d\n", epbp->bpb3.sectors_per_fat);
cprintf("Extended Flags: 0x%x\n", epbp->bpb3.extended_flags);
cprintf("Version: %d\n", epbp->bpb3.version);
cprintf("Root Cluster: 0x%x\n", epbp->bpb3.root_cluster);
cprintf("System Information: 0x%x\n", epbp->bpb3.system_information);
cprintf("Backup Boot Sector: 0x%x\n", epbp->bpb3.backup_boot_sector);
cprintf("\n");
cprintf("Drive Number: %d\n", epbp->drive_num);
cprintf("Extended Signature: 0x%x\n", epbp->extended_signature);
cprintf("Volume ID: 0x%lx\n", epbp->volume_id);
cprintf("Partition Label: %.11s\n", &epbp->partition_label);
cprintf("Partition Label: %.8s\n", &epbp->filesystem_type);
cprintf("\n");
cprintf("Boot Signature: %x %x\n", buf[510], buf[511]);
while (1) { while (1) {