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Make run_flash() and run() both call jump_to_app()

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Michael Cardell Widerkrantz 2025-03-13 16:31:32 +01:00
parent 955c7e4736
commit 980a3c84a1
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GPG Key ID: D3DB3DDF57E704E5
1 changed files with 28 additions and 57 deletions
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85
hw/application_fpga/fw/tk1/main.c
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@ -327,26 +327,8 @@ static enum state loading_commands(const struct frame_header *hdr,
return state;
}
static void run_flash(const struct context *ctx, struct partition_table *part_table)
static void jump_to_app(void)
{
/* At this point we expect an app to be loaded into RAM */
*app_addr = TK1_RAM_BASE;
// CDI = hash(uds, hash(app), uss)
compute_cdi(ctx->digest, ctx->use_uss, ctx->uss);
if (part_table->pre_app_data.status == 0x02) {
debug_puts("Create auth\n");
auth_app_create(&part_table->pre_app_data.auth);
part_table->pre_app_data.status = 0x01;
part_table_write(part_table);
}
if (!auth_app_authenticate(&part_table->pre_app_data.auth)) {
debug_puts("!Authenticated\n");
assert(1 == 2);
}
debug_puts("Flipping to app mode!\n");
debug_puts("Jumping to ");
debug_putinthex(*app_addr);
@ -385,6 +367,28 @@ static void run_flash(const struct context *ctx, struct partition_table *part_ta
__builtin_unreachable();
}
static void run_flash(const struct context *ctx, struct partition_table *part_table)
{
/* At this point we expect an app to be loaded into RAM */
*app_addr = TK1_RAM_BASE;
// CDI = hash(uds, hash(app), uss)
compute_cdi(ctx->digest, ctx->use_uss, ctx->uss);
if (part_table->pre_app_data.status == 0x02) {
debug_puts("Create auth\n");
auth_app_create(&part_table->pre_app_data.auth);
part_table->pre_app_data.status = 0x01;
part_table_write(part_table);
}
if (!auth_app_authenticate(&part_table->pre_app_data.auth)) {
debug_puts("!Authenticated\n");
assert(1 == 2);
}
jump_to_app();
}
static void run(const struct context *ctx)
{
@ -394,42 +398,7 @@ static void run(const struct context *ctx)
// CDI = hash(uds, hash(app), uss)
compute_cdi(ctx->digest, ctx->use_uss, ctx->uss);
debug_puts("Flipping to app mode!\n");
debug_puts("Jumping to ");
debug_putinthex(*app_addr);
debug_lf();
// Clear the firmware stack
// clang-format off
#ifndef S_SPLINT_S
asm volatile(
"la a0, _sstack;"
"la a1, _estack;"
"loop:;"
"sw zero, 0(a0);"
"addi a0, a0, 4;"
"blt a0, a1, loop;"
::: "memory");
#endif
// clang-format on
syscall_enable();
// Jump to app - doesn't return
// Hardware is responsible for switching to app mode
// clang-format off
#ifndef S_SPLINT_S
asm volatile(
// Get value at TK1_MMIO_TK1_APP_ADDR
"lui a0,0xff000;"
"lw a0,0x030(a0);"
// Jump to it
"jalr x0,0(a0);"
::: "memory");
#endif
// clang-format on
__builtin_unreachable();
jump_to_app();
}
#if !defined(SIMULATION)
@ -525,7 +494,9 @@ int main(void)
// flash.
part_table.pre_app_data.size = 0x20000;
// Just start the preloaded app.
// Just start the preloaded app. This should be a part of an
// initial state. The initial state should check resetinfo if
// it should start from flash or not.
if (preload_load(&part_table) == -1) {
state = FW_STATE_FAIL;
}
@ -541,7 +512,7 @@ int main(void)
state = FW_STATE_RUN_FLASH;
led_set(LED_GREEN);
// End of initial state.
for (;;) {
switch (state) {