mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-24 23:38:09 +00:00
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
#include STM32_HAL_H
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#include <string.h>
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#include "common.h"
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#include "display.h"
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#include "image.h"
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#define LOADER_FGCOLOR 0xFFFF
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#define LOADER_BGCOLOR 0x0000
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#define LOADER_PRINT(X) do { display_print(X, -1); display_print_out(LOADER_FGCOLOR, LOADER_BGCOLOR); } while(0)
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#define LOADER_PRINTLN(X) do { display_print(X "\n", -1); display_print_out(LOADER_FGCOLOR, LOADER_BGCOLOR); } while(0)
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void pendsv_isr_handler(void) {
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__fatal_error("pendsv");
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}
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void display_vendor(const uint8_t *vimg, const char *vstr, uint32_t vstr_len)
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{
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display_clear();
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if (memcmp(vimg, "TOIf", 4) != 0) {
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return;
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}
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uint16_t w = *(uint16_t *)(vimg + 4);
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uint16_t h = *(uint16_t *)(vimg + 6);
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if (w != 120 || h != 120) {
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return;
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}
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uint32_t datalen = *(uint32_t *)(vimg + 8);
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display_image((DISPLAY_RESX - w) / 2, (DISPLAY_RESY - h) / 2, w, h, vimg + 12, datalen);
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display_text_center(DISPLAY_RESX / 2, DISPLAY_RESY * 3 / 4 + 20, vstr, vstr_len, FONT_BOLD, 0xFFFF, 0x0000);
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display_refresh();
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}
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void check_and_jump(void)
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{
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LOADER_PRINTLN("checking firmware");
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vendor_header vhdr;
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if (!vendor_parse_header((const uint8_t *)(FIRMWARE_START), &vhdr)) {
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LOADER_PRINTLN("invalid vendor header");
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return;
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}
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if (!vendor_check_signature((const uint8_t *)(FIRMWARE_START))) {
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LOADER_PRINTLN("unsigned vendor header");
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return;
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}
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if (image_check_signature((const uint8_t *)(FIRMWARE_START + vhdr.hdrlen), &vhdr)) {
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LOADER_PRINTLN("valid firmware image");
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display_vendor(vhdr.vimg, (const char *)vhdr.vstr, vhdr.vstr_len);
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HAL_Delay(1000); // TODO: remove?
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LOADER_PRINTLN("JUMP!");
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jump_to(FIRMWARE_START + vhdr.hdrlen + HEADER_SIZE);
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} else {
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LOADER_PRINTLN("invalid firmware image");
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}
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}
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int main(void)
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{
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SCB->VTOR = LOADER_START + HEADER_SIZE;
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periph_init();
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display_init();
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display_clear();
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display_backlight(255);
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LOADER_PRINTLN("TREZOR Loader");
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LOADER_PRINTLN("=============");
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LOADER_PRINTLN("starting loader");
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check_and_jump();
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__fatal_error("halt");
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return 0;
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}
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