Merge branch 'feature/switch_from_external_to_interanl_ram' into 'master'

esp32: Switch SPIRAM stack in esp_restart_noos() to internal stack

Closes IDFGH-3086

See merge request espressif/esp-idf!8785
This commit is contained in:
Angus Gratton 2020-06-01 14:39:22 +08:00
commit 8b156a9095
4 changed files with 171 additions and 1 deletions

View file

@ -88,6 +88,16 @@ void IRAM_ATTR esp_restart_noos(void)
uart_tx_wait_idle(1); uart_tx_wait_idle(1);
uart_tx_wait_idle(2); uart_tx_wait_idle(2);
#ifdef CONFIG_SPIRAM_ALLOW_STACK_EXTERNAL_MEMORY
if (esp_ptr_external_ram(get_sp())) {
// If stack_addr is from External Memory (CONFIG_SPIRAM_ALLOW_STACK_EXTERNAL_MEMORY is used)
// then need to switch SP to Internal Memory otherwise
// we will get the "Cache disabled but cached memory region accessed" error after Cache_Read_Disable.
uint32_t new_sp = SOC_DRAM_LOW + (SOC_DRAM_HIGH - SOC_DRAM_LOW) / 2;
SET_STACK(new_sp);
}
#endif
// Disable cache // Disable cache
Cache_Read_Disable(0); Cache_Read_Disable(0);
Cache_Read_Disable(1); Cache_Read_Disable(1);

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@ -244,4 +244,89 @@ TEST_CASE_MULTIPLE_STAGES("reset reason ESP_RST_BROWNOUT after brownout event",
check_reset_reason_brownout); check_reset_reason_brownout);
#ifdef CONFIG_SPIRAM_ALLOW_STACK_EXTERNAL_MEMORY
#ifndef CONFIG_FREERTOS_UNICORE
#include "xt_instr_macros.h"
#include "xtensa/config/specreg.h"
static int size_stack = 1024 * 3;
static StackType_t *start_addr_stack;
static int fibonacci(int n, void* func(void))
{
int tmp1 = n, tmp2 = n;
uint32_t base, start;
RSR(WINDOWBASE, base);
RSR(WINDOWSTART, start);
printf("WINDOWBASE = %-2d WINDOWSTART = 0x%x\n", base, start);
if (n <= 1) {
StackType_t *last_addr_stack = get_sp();
StackType_t *used_stack = (StackType_t *) (start_addr_stack - last_addr_stack);
printf("addr_stack = %p, used[%p]/all[0x%x] space in stack\n", last_addr_stack, used_stack, size_stack);
func();
return n;
}
int fib = fibonacci(n - 1, func) + fibonacci(n - 2, func);
printf("fib = %d\n", (tmp1 - tmp2) + fib);
return fib;
}
static void test_task(void *func)
{
start_addr_stack = get_sp();
if (esp_ptr_external_ram(start_addr_stack)) {
printf("restart_task: uses external stack, addr_stack = %p\n", start_addr_stack);
} else {
printf("restart_task: uses internal stack, addr_stack = %p\n", start_addr_stack);
}
fibonacci(35, func);
}
static void func_do_exception(void)
{
*((int *) 0) = 0;
}
static void init_restart_task(void)
{
StackType_t *stack_for_task = (StackType_t *) heap_caps_calloc(1, size_stack, MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
printf("init_task: current addr_stack = %p, stack_for_task = %p\n", get_sp(), stack_for_task);
static StaticTask_t task_buf;
xTaskCreateStaticPinnedToCore(test_task, "test_task", size_stack, esp_restart, 5, stack_for_task, &task_buf, 1);
while (1) { };
}
static void init_task_do_exception(void)
{
StackType_t *stack_for_task = (StackType_t *) heap_caps_calloc(1, size_stack, MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
printf("init_task: current addr_stack = %p, stack_for_task = %p\n", get_sp(), stack_for_task);
static StaticTask_t task_buf;
xTaskCreateStaticPinnedToCore(test_task, "test_task", size_stack, func_do_exception, 5, stack_for_task, &task_buf, 1);
while (1) { };
}
static void test1_finish(void)
{
TEST_ASSERT_EQUAL(ESP_RST_SW, esp_reset_reason());
printf("test - OK\n");
}
static void test2_finish(void)
{
TEST_ASSERT_EQUAL(ESP_RST_PANIC, esp_reset_reason());
printf("test - OK\n");
}
TEST_CASE_MULTIPLE_STAGES("reset reason ESP_RST_SW after restart in a task with spiram stack", "[spiram_stack][reset=SW_CPU_RESET]",
init_restart_task,
test1_finish);
TEST_CASE_MULTIPLE_STAGES("reset reason ESP_RST_PANIC after an exception in a task with spiram stack", "[spiram_stack][reset=StoreProhibited,SW_CPU_RESET]",
init_task_do_exception,
test2_finish);
#endif // CONFIG_FREERTOS_UNICORE
#endif // CONFIG_SPIRAM_ALLOW_STACK_EXTERNAL_MEMORY
/* Not tested here: ESP_RST_SDIO */ /* Not tested here: ESP_RST_SDIO */

View file

@ -22,3 +22,77 @@
#define WITLB(at, as) asm volatile ("witlb %0, %1; \n isync \n " : : "r" (at), "r" (as)) #define WITLB(at, as) asm volatile ("witlb %0, %1; \n isync \n " : : "r" (at), "r" (as))
#define WDTLB(at, as) asm volatile ("wdtlb %0, %1; \n dsync \n " : : "r" (at), "r" (as)) #define WDTLB(at, as) asm volatile ("wdtlb %0, %1; \n dsync \n " : : "r" (at), "r" (as))
/* The SET_STACK implements a setting a new stack pointer (sp or a1).
* to do this the need reset PS_WOE, reset WINDOWSTART, update SP, and return PS_WOE.
*
* Note: It has 2 implementations one for using in assembler files (*.S) and one for using in C.
*
* C code prototype for SET_STACK:
* uint32_t ps_reg;
* uint32_t w_base;
* RSR(PS, ps_reg);
* ps_reg &= ~(PS_WOE_MASK | PS_OWB_MASK | PS_CALLINC_MASK);
* WSR(PS, ps_reg);
*
* RSR(WINDOWBASE, w_base);
* WSR(WINDOWSTART, (1 << w_base));
*
* asm volatile ( "movi sp, "XTSTR( (SOC_DRAM_LOW + (SOC_DRAM_HIGH - SOC_DRAM_LOW) / 2) )"");
*
* RSR(PS, ps_reg);
* ps_reg |= (PS_WOE_MASK);
* WSR(PS, ps_reg);
*/
#ifdef __ASSEMBLER__
.macro SET_STACK new_sp tmp1 tmp2
rsr.ps \tmp1
movi \tmp2, ~(PS_WOE_MASK | PS_OWB_MASK | PS_CALLINC_MASK)
and \tmp1, \tmp1, \tmp2
wsr.ps \tmp1
rsync
rsr.windowbase \tmp1
ssl \tmp1
movi \tmp1, 1
sll \tmp1, \tmp1
wsr.windowstart \tmp1
rsync
mov sp, \new_sp
rsr.ps \tmp1
movi \tmp2, (PS_WOE)
or \tmp1, \tmp1, \tmp2
wsr.ps \tmp1
rsync
.endm
#else
#define SET_STACK(new_sp) \
do { \
uint32_t tmp1 = 0, tmp2 = 0; \
asm volatile ( \
"rsr.ps %1 \n"\
"movi %2, ~" XTSTR( PS_WOE_MASK | PS_OWB_MASK | PS_CALLINC_MASK ) " \n"\
"and %1, %1, %2 \n"\
"wsr.ps %1 \n"\
"rsync \n"\
" \n"\
"rsr.windowbase %1 \n"\
"ssl %1 \n"\
"movi %1, 1 \n"\
"sll %1, %1 \n"\
"wsr.windowstart %1 \n"\
"rsync \n"\
" \n"\
"mov sp, %0 \n"\
"rsr.ps %1 \n"\
" \n"\
"movi %2, " XTSTR( PS_WOE_MASK ) "\n"\
" \n"\
"or %1, %1, %2 \n"\
"wsr.ps %1 \n"\
"rsync \n"\
: "+r"(new_sp), "+r"(tmp1), "+r"(tmp2)); \
} while (0);
#endif // __ASSEMBLER__

View file

@ -4,3 +4,4 @@ CONFIG_ESP32_SPIRAM_SUPPORT=y
CONFIG_ESP_INT_WDT_TIMEOUT_MS=800 CONFIG_ESP_INT_WDT_TIMEOUT_MS=800
CONFIG_SPIRAM_OCCUPY_NO_HOST=y CONFIG_SPIRAM_OCCUPY_NO_HOST=y
CONFIG_ESP32_WIFI_RX_IRAM_OPT=n CONFIG_ESP32_WIFI_RX_IRAM_OPT=n
CONFIG_SPIRAM_ALLOW_STACK_EXTERNAL_MEMORY=y