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xtensa/esp32s3: Support 32MB PSRAM

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This commit is contained in:
Dong Heng
2023-05-17 11:29:25 +08:00
committed by Xiang Xiao
parent 78006f9824
commit 4a279b4b9b
1 changed files with 48 additions and 8 deletions
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arch/xtensa/src/esp32s3/esp32s3_spiram.c
+48 -8
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@@ -97,6 +97,38 @@ extern int cache_dbus_mmu_set(uint32_t ext_ram, uint32_t vaddr,
uint32_t paddr, uint32_t psize,
uint32_t num, uint32_t fixed);
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: mmu_valid_space
*
* Description:
* Calculate MMU valid space.
*
* Input Parameters:
* start_address - Pointer to store MMU mapped start address
*
* Returned Value:
* MMU valid space size by bytes.
*
****************************************************************************/
static inline uint32_t mmu_valid_space(uint32_t *start_address)
{
for (int i = 0; i < FLASH_MMU_TABLE_SIZE; i++)
{
if (FLASH_MMU_TABLE[i] & MMU_INVALID)
{
*start_address = DRAM0_CACHE_ADDRESS_LOW + i * MMU_PAGE_SIZE;
return (FLASH_MMU_TABLE_SIZE - i) * MMU_PAGE_SIZE;
}
}
return 0;
}
/****************************************************************************
* Public Functions
****************************************************************************/
@@ -109,24 +141,32 @@ extern int cache_dbus_mmu_set(uint32_t ext_ram, uint32_t vaddr,
void IRAM_ATTR esp_spiram_init_cache(void)
{
uint32_t regval;
int ret = psram_get_available_size(&g_mapped_size);
uint32_t psram_size;
uint32_t mapped_vaddr_size;
int ret = psram_get_available_size(&psram_size);
if (ret != OK)
{
abort();
}
merr("Mapped size = %d\n", g_mapped_size);
minfo("PSRAM available size = %d\n", psram_size);
if ((SOC_EXTRAM_DATA_HIGH - SOC_EXTRAM_DATA_LOW) < g_mapped_size)
mapped_vaddr_size = mmu_valid_space(&g_mapped_vaddr_start);
minfo("Virtual address size = %d\n", mapped_vaddr_size);
if (mapped_vaddr_size < psram_size)
{
/* Decide these logics when there's a real PSRAM with larger size */
merr("Virtual address not enough for PSRAM!");
abort();
g_mapped_size = mapped_vaddr_size;
mwarn("Virtual address not enough for PSRAM, only %d size is mapped!",
g_mapped_size);
}
else
{
g_mapped_size = psram_size;
}
g_mapped_vaddr_start = SOC_EXTRAM_DATA_HIGH - g_mapped_size;
/* Suspend DRAM Case during configuration */
@@ -150,7 +190,7 @@ void IRAM_ATTR esp_spiram_init_cache(void)
/* Currently no non-heap stuff on ESP32S3 */
g_allocable_vaddr_start = g_mapped_vaddr_start;
g_allocable_vaddr_end = SOC_EXTRAM_DATA_HIGH;
g_allocable_vaddr_end = g_mapped_vaddr_start + g_mapped_size;
}
/* Simple RAM test. Writes a word every 32 bytes. Takes about a second