Files
gps/soc/software/gps_system/tests/test_plic_warm_reset.c
T
onur 516016efb9 Make GPS navigation epochs interrupt-coherent
Wait for every navigation-ready tracking channel in a GPS epoch, remove unlocked channels without a timeout, and keep late joins for the next epoch. Reset PLIC ownership during warm initialization and extend Linux synthetic, integrity, and fake-MMIO regression coverage.
2026-07-23 19:20:06 +03:00

98 lines
2.3 KiB
C

#include "bsp/plic.h"
#include "bsp/soc.h"
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#define PLIC_WORDS ((0x200008u / sizeof(uint32_t)) + 1u)
#define PLIC_ENABLE_OFFSET 0x2000u
static uint32_t plic_words[PLIC_WORDS];
static int failures;
#define CHECK(condition, message) do { \
if(!(condition)) { \
fprintf(stderr, "FAIL: %s\n", message); \
failures++; \
} \
} while(0)
uint32_t test_bsp_read32(uintptr_t address)
{
if((address < BSP_PLIC_BASE) ||
(address >= BSP_PLIC_BASE + sizeof(plic_words)))
{
failures++;
return 0u;
}
return plic_words[(address - BSP_PLIC_BASE) / sizeof(uint32_t)];
}
void test_bsp_write32(uintptr_t address, uint32_t value)
{
if((address < BSP_PLIC_BASE) ||
(address >= BSP_PLIC_BASE + sizeof(plic_words)))
{
failures++;
return;
}
plic_words[(address - BSP_PLIC_BASE) / sizeof(uint32_t)] = value;
}
static uint32_t enabled_sources(void)
{
return plic_words[PLIC_ENABLE_OFFSET / sizeof(uint32_t)];
}
static void initialize_gps_owned_sources(void)
{
bsp_plic_disable_all();
bsp_plic_set_threshold(0u);
for(uint32_t source = 1u ; source <= 10u ; source++)
{
bsp_plic_set_priority(source, 1u);
bsp_plic_enable(source);
}
}
int main(void)
{
memset(plic_words, 0, sizeof(plic_words));
/* Model the previous fused image: GPS sources 1..10 plus PMOD/IMU 11. */
for(uint32_t source = 1u ; source <= 11u ; source++)
{
bsp_plic_enable(source);
}
CHECK(enabled_sources() == 0x0ffeu,
"fused-image source mask was not established");
/* CPU-only warm reset must remove every source not owned by GPS. */
initialize_gps_owned_sources();
CHECK(enabled_sources() == 0x07feu,
"warm GPS initialization retained the previous IMU source");
for(uint32_t source = 1u ; source <= 10u ; source++)
{
CHECK(plic_words[source] == 1u,
"GPS source priority was not re-established");
}
/* A later IMU start may explicitly reclaim source 11. */
bsp_plic_set_priority(11u, 1u);
bsp_plic_enable(11u);
CHECK(enabled_sources() == 0x0ffeu,
"explicit IMU start did not add source 11");
/* A second warm GPS-only initialization must be idempotent. */
initialize_gps_owned_sources();
CHECK(enabled_sources() == 0x07feu,
"repeated warm initialization was not idempotent");
if(failures == 0)
{
puts("plic warm-reset tests passed");
}
return failures == 0 ? 0 : 1;
}