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[stage1] refactor diskio.c

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This commit is contained in:
TuxSH 2018-05-12 12:37:41 +02:00
parent 00f08321c7
commit 9dce3b05ba
1 changed files with 44 additions and 21 deletions
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65
fusee/fusee-primary/src/lib/fatfs/diskio.c
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@ -13,16 +13,55 @@
#include "../../sdmmc.h"
#include "../../hwinit.h"
static bool g_ahb_redirect_enabled = false;
/* Global sd struct. */
struct mmc g_sd_mmc = {0};
static struct mmc g_sd_mmc = {0};
static bool g_sd_initialized = false;
static bool g_ahb_redirect_enabled = false;
int initialize_sd_mmc(void) {
if (!g_ahb_redirect_enabled) {
mc_enable_ahb_redirect();
g_ahb_redirect_enabled = true;
}
if (!g_sd_initialized) {
int rc = sdmmc_init(&g_sd_mmc, SWITCH_MICROSD);
if (rc == 0) {
g_sd_initialized = true;
return 0;
} else {
return rc;
}
} else {
return 0;
}
}
/*
Uncomment if needed:
struct mmc nand_mmc = {0};
static struct mmc nand_mmc = {0};
static bool g_nand_initialized = false;
int initialize_nand_mmc(void) {
if (!g_ahb_redirect_enabled) {
mc_enable_ahb_redirect();
g_ahb_redirect_enabled = true;
}
if (!g_nand_initialized) {
int rc = sdmmc_init(&g_sd_mmc, SWITCH_EMMC);
if (rc == 0) {
g_nand_initialized = true;
return 0;
} else {
return rc;
}
} else {
return 0;
}
}
*/
/*-----------------------------------------------------------------------*/
@ -46,25 +85,9 @@ DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
if (!g_ahb_redirect_enabled) {
mc_enable_ahb_redirect();
g_ahb_redirect_enabled = true;
}
switch (pdrv) {
case 0: {
if (!g_sd_initialized) {
int rc = sdmmc_init(&g_sd_mmc, SWITCH_MICROSD);
if (rc == 0) {
g_sd_initialized = true;
return 0;
} else {
return rc;
}
} else {
return 0;
}
}
case 0:
return initialize_sd_mmc() == 0 ? 0 : STA_NOINIT;
default:
return STA_NODISK;
}