1
0
Fork 0
mirror of https://github.com/CTCaer/hekate.git synced 2024-11-10 12:31:51 +00:00
hekate/bootloader/storage/nx_sd.c
Dave Murphy cc54df87d7 fixes for compiling with gcc 10
gcc 10 no longer lets you get away with not externing global variables in header files. This adds the necessary extern and adds defines in appropriate c files
2020-05-08 23:32:44 +01:00

184 lines
3.3 KiB
C

/*
* Copyright (c) 2018 naehrwert
* Copyright (c) 2018-2019 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "nx_sd.h"
#include "sdmmc.h"
#include "sdmmc_driver.h"
#include "../gfx/gfx.h"
#include "../libs/fatfs/ff.h"
#include "../mem/heap.h"
static bool sd_mounted = false;
static u32 sd_mode = SD_UHS_SDR82;
sdmmc_t sd_sdmmc;
sdmmc_storage_t sd_storage;
FATFS sd_fs;
u32 sd_get_mode()
{
return sd_mode;
}
int sd_init_retry(bool power_cycle)
{
u32 bus_width = SDMMC_BUS_WIDTH_4;
u32 type = SDHCI_TIMING_UHS_SDR82;
// Power cycle SD card.
if (power_cycle)
{
sd_mode--;
sdmmc_storage_end(&sd_storage);
}
// Get init parameters.
switch (sd_mode)
{
case SD_INIT_FAIL: // Reset to max.
return 0;
case SD_1BIT_HS25:
bus_width = SDMMC_BUS_WIDTH_1;
type = SDHCI_TIMING_SD_HS25;
break;
case SD_4BIT_HS25:
type = SDHCI_TIMING_SD_HS25;
break;
case SD_UHS_SDR82:
type = SDHCI_TIMING_UHS_SDR82;
break;
default:
sd_mode = SD_UHS_SDR82;
}
return sdmmc_storage_init_sd(&sd_storage, &sd_sdmmc, bus_width, type);
}
bool sd_initialize(bool power_cycle)
{
if (power_cycle)
sdmmc_storage_end(&sd_storage);
int res = !sd_init_retry(false);
while (true)
{
if (!res)
return true;
else if (!sdmmc_get_sd_inserted()) // SD Card is not inserted.
{
sd_mode = SD_UHS_SDR82;
break;
}
else if (sd_mode == SD_INIT_FAIL)
break;
else
res = !sd_init_retry(true);
}
sdmmc_storage_end(&sd_storage);
return false;
}
bool sd_mount()
{
if (sd_mounted)
return true;
int res = !sd_initialize(false);
if (res)
{
gfx_con.mute = false;
EPRINTF("Failed to init SD card.");
if (!sdmmc_get_sd_inserted())
EPRINTF("Make sure that it is inserted.");
else
EPRINTF("SD Card Reader is not properly seated!");
}
else
{
res = f_mount(&sd_fs, "", 1);
if (res == FR_OK)
{
sd_mounted = true;
return true;
}
else
{
gfx_con.mute = false;
EPRINTFARGS("Failed to mount SD card (FatFS Error %d).\nMake sure that a FAT partition exists..", res);
}
}
return false;
}
void sd_unmount()
{
sd_mode = SD_UHS_SDR82;
if (sd_mounted)
{
f_mount(NULL, "", 1);
sdmmc_storage_end(&sd_storage);
sd_mounted = false;
}
}
void *sd_file_read(const char *path, u32 *fsize)
{
FIL fp;
if (f_open(&fp, path, FA_READ) != FR_OK)
return NULL;
u32 size = f_size(&fp);
if (fsize)
*fsize = size;
void *buf = malloc(size);
if (f_read(&fp, buf, size, NULL) != FR_OK)
{
free(buf);
f_close(&fp);
return NULL;
}
f_close(&fp);
return buf;
}
int sd_save_to_file(void *buf, u32 size, const char *filename)
{
FIL fp;
u32 res = 0;
res = f_open(&fp, filename, FA_CREATE_ALWAYS | FA_WRITE);
if (res)
{
EPRINTFARGS("Error (%d) creating file\n%s.\n", res, filename);
return res;
}
f_write(&fp, buf, size, NULL);
f_close(&fp);
return 0;
}