spi_flash: Enable flash emulation down to ROM function calls

components/spi_flash/sim/flash_mock.cpp

@@ -0,0 +1,65 @@
+#include "SpiFlash.h"
+
+#include "esp_spi_flash.h"
+#include "esp_partition.h"
+
+#include "esp_err.h"
+#include "rom/spi_flash.h"
+
+static SpiFlash spiflash = SpiFlash();
+
+esp_rom_spiflash_chip_t g_rom_flashchip;
+
+extern "C" void _spi_flash_init(size_t chip_size, size_t block_size, size_t sector_size, size_t page_size, const char* partitions_bin)
+{
+    spiflash.init(chip_size, block_size, sector_size, page_size, partitions_bin);
+
+    g_rom_flashchip.chip_size = chip_size;
+    g_rom_flashchip.block_size = block_size;
+    g_rom_flashchip.sector_size = sector_size;
+    g_rom_flashchip.page_size = page_size;
+}
+
+esp_err_t spi_flash_mmap(size_t src_addr, size_t size, spi_flash_mmap_memory_t memory,
+                         const void** out_ptr, spi_flash_mmap_handle_t* out_handle)
+{
+    *out_handle = 0;
+    *out_ptr = (void*)spiflash.get_memory_ptr(src_addr);
+
+    return ESP_OK;
+}
+
+void spi_flash_munmap(spi_flash_mmap_handle_t handle)
+{
+    return;
+}
+
+esp_rom_spiflash_result_t esp_rom_spiflash_read(uint32_t target, uint32_t *dest, int32_t len)
+{
+    return spiflash.read(target, dest, len);
+}
+
+esp_rom_spiflash_result_t esp_rom_spiflash_erase_block(uint32_t block)
+{
+    return spiflash.erase_block(block);
+}
+
+esp_rom_spiflash_result_t esp_rom_spiflash_erase_sector(uint32_t sector)
+{
+    return spiflash.erase_sector(sector);
+}
+
+esp_rom_spiflash_result_t esp_rom_spiflash_erase_page(uint32_t page)
+{
+    return spiflash.erase_page(page);
+}
+
+esp_rom_spiflash_result_t esp_rom_spiflash_write(uint32_t target, const uint32_t *src, int32_t len)
+{
+    return spiflash.write(target, src, len);
+}
+
+esp_rom_spiflash_result_t esp_rom_spiflash_write_encrypted(uint32_t flash_addr, uint32_t *data, uint32_t len)
+{
+    return spiflash.write(flash_addr, data, len);
+}