mirror of
https://github.com/raspberrypi/pico-sdk.git
synced 2025-12-10 07:14:36 +01:00
Add Wi-Fi firmware partition support for Pico 2 W (#1969)
This commit is contained in:
will-v-pi
GitHub
parent
8fd7c60f09
commit
820a33a39f
11 changed files with 407 additions and 9 deletions
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@ -26,13 +26,21 @@
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#define UF2_FLAG_MD5_PRESENT 0x00004000u
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#define UF2_FLAG_EXTENSION_FLAGS_PRESENT 0x00008000u
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// Extra family IDs
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#define CYW43_FIRMWARE_FAMILY_ID 0xe48bff55u
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// Bootrom supported family IDs
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#define RP2040_FAMILY_ID 0xe48bff56u
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#define ABSOLUTE_FAMILY_ID 0xe48bff57u
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#define DATA_FAMILY_ID 0xe48bff58u
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#define RP2350_ARM_S_FAMILY_ID 0xe48bff59u
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#define RP2350_RISCV_FAMILY_ID 0xe48bff5au
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#define RP2350_ARM_NS_FAMILY_ID 0xe48bff5bu
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#define FAMILY_ID_MAX 0xe48bff5bu
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#define BOOTROM_FAMILY_ID_MIN RP2040_FAMILY_ID
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#define BOOTROM_FAMILY_ID_MAX RP2350_ARM_NS_FAMILY_ID
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// Defined for backwards compatibility
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#define FAMILY_ID_MAX BOOTROM_FAMILY_ID_MAX
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// 04 e3 57 99
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#define UF2_EXTENSION_RP2_IGNORE_BLOCK 0x9957e304
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@ -83,3 +83,13 @@ pico_generate_pio_header(
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name = "cyw43_bus_pio",
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srcs = ["cyw43_bus_pio_spi.pio"],
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)
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# TODO: https://github.com/raspberrypi/pico-sdk/issues/2055 Support storing
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# Wi-Fi firmware in a separate partition
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filegroup(
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name = "pico_use_partition_firmware",
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srcs = [
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"wifi_firmware.S",
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"include/cyw43_partition_firmware.h",
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]
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)
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@ -165,5 +165,89 @@ if (EXISTS ${PICO_CYW43_DRIVER_PATH}/${CYW43_DRIVER_TEST_FILE})
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)
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endfunction()
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set(PICO_CYW43_DRIVER_CURRENT_PATH ${CMAKE_CURRENT_LIST_DIR})
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pico_register_common_scope_var(PICO_CYW43_DRIVER_CURRENT_PATH)
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pico_promote_common_scope_vars()
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# pico_use_wifi_firmware_partition(TARGET [NO_EMBEDDED_PT])
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# \brief\ Use a partition for the Wi-Fi firmware
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#
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# This will read the CYW43 firmware from a partition with the ID 0x776966696669726d,
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# instead of embedding the firmware blob in the binary. By default it will also embed
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# a compatible partition table in the binary, but this can be disabled by passing the
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# NO_EMBEDDED_PT argument (for example, if you need to chain into the binary, it
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# can't contain a partition table).
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#
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# \param\ NO_EMBEDDED_PT If set, will not embed a partition table in the binary
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function(pico_use_wifi_firmware_partition TARGET)
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set(options NO_EMBEDDED_PT)
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cmake_parse_arguments(PARSE_ARGV 1 OPTS "${options}" "" "")
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if (PICO_PLATFORM STREQUAL "rp2040")
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message(FATAL_ERROR "RP2040 does not support storing wi-fi firmware in partitions")
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endif()
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target_compile_definitions(${TARGET} PRIVATE CYW43_USE_FIRMWARE_PARTITION=1)
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if (NOT OPTS_NO_EMBEDDED_PT)
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get_target_property(picotool_embed_pt ${TARGET} PICOTOOL_EMBED_PT)
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if (NOT picotool_embed_pt)
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pico_embed_pt_in_binary(${TARGET} ${PICO_CYW43_DRIVER_CURRENT_PATH}/wifi_pt.json)
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endif()
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endif()
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find_package (Python3 REQUIRED COMPONENTS Interpreter)
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# CYW43 firmware blob
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add_custom_target(${TARGET}_firmware_blob DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/firmware_blob.S)
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add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/firmware_blob.S
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COMMAND ${Python3_EXECUTABLE} ${PICO_CYW43_DRIVER_CURRENT_PATH}/cyw43_firmware.py ${PICO_CYW43_DRIVER_PATH}/firmware/wb43439A0_7_95_49_00_combined.h ${CMAKE_CURRENT_BINARY_DIR}/firmware_blob.S
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)
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# Create UF2s for regular and TBYB firmwares
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add_executable(${TARGET}_firmware
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${PICO_CYW43_DRIVER_CURRENT_PATH}/wifi_firmware.S)
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add_executable(${TARGET}_firmware_tbyb
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${PICO_CYW43_DRIVER_CURRENT_PATH}/wifi_firmware.S)
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add_dependencies(${TARGET}_firmware ${TARGET}_firmware_blob)
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add_dependencies(${TARGET}_firmware_tbyb ${TARGET}_firmware_blob)
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target_include_directories(${TARGET}_firmware PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
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target_include_directories(${TARGET}_firmware_tbyb PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
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target_compile_definitions(${TARGET}_firmware PRIVATE
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NO_PICO_PLATFORM=1
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)
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target_compile_definitions(${TARGET}_firmware_tbyb PRIVATE
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NO_PICO_PLATFORM=1
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PICO_CRT0_IMAGE_TYPE_TBYB=1
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)
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target_link_options(${TARGET}_firmware PRIVATE -nostartfiles -nodefaultlibs LINKER:--script=${PICO_CYW43_DRIVER_CURRENT_PATH}/wifi_firmware.ld)
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target_link_options(${TARGET}_firmware_tbyb PRIVATE -nostartfiles -nodefaultlibs LINKER:--script=${PICO_CYW43_DRIVER_CURRENT_PATH}/wifi_firmware.ld)
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target_link_libraries(${TARGET}_firmware boot_picobin_headers)
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target_link_libraries(${TARGET}_firmware_tbyb boot_picobin_headers)
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get_target_property(hasSigfile ${TARGET} PICOTOOL_SIGFILE)
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if (hasSigfile)
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pico_sign_binary(${TARGET}_firmware ${sigfile})
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pico_sign_binary(${TARGET}_firmware_tbyb ${sigfile})
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endif()
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pico_hash_binary(${TARGET}_firmware)
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pico_hash_binary(${TARGET}_firmware_tbyb)
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pico_set_uf2_family(${TARGET}_firmware cyw43-firmware)
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pico_set_uf2_family(${TARGET}_firmware_tbyb cyw43-firmware)
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pico_package_uf2_output(${TARGET}_firmware 0x10000000)
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pico_package_uf2_output(${TARGET}_firmware_tbyb 0x10000000)
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pico_add_extra_outputs(${TARGET}_firmware)
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pico_add_extra_outputs(${TARGET}_firmware_tbyb)
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add_dependencies(${TARGET}
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${TARGET}_firmware ${TARGET}_firmware_tbyb)
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endfunction()
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endif()
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@ -19,7 +19,18 @@
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#define CYW43_SLEEP_CHECK_MS 50
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#endif
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static async_context_t *cyw43_async_context;
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static async_context_t *cyw43_async_context = NULL;
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#if CYW43_USE_FIRMWARE_PARTITION
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#include "pico/bootrom.h"
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#include "hardware/flash.h"
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#include "boot/picobin.h"
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#include <stdlib.h>
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int32_t cyw43_wifi_fw_len;
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int32_t cyw43_clm_len;
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uintptr_t fw_data;
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#endif
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static void cyw43_sleep_timeout_reached(async_context_t *context, async_at_time_worker_t *worker);
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static void cyw43_do_poll(async_context_t *context, async_when_pending_worker_t *worker);
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@ -104,6 +115,87 @@ static void cyw43_sleep_timeout_reached(async_context_t *context, __unused async
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}
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bool cyw43_driver_init(async_context_t *context) {
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#if CYW43_USE_FIRMWARE_PARTITION
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uint32_t buffer[(16 * 4) + 1] = {}; // maximum of 16 partitions, each with maximum of 4 words returned, plus 1
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int ret = rom_get_partition_table_info(buffer, count_of(buffer), PT_INFO_PARTITION_LOCATION_AND_FLAGS | PT_INFO_PARTITION_ID);
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assert(buffer[0] == (PT_INFO_PARTITION_LOCATION_AND_FLAGS | PT_INFO_PARTITION_ID));
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if (ret > 0) {
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int i = 1;
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int p = 0;
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int picked_p = -1;
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while (i < ret) {
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i++;
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uint32_t flags_and_permissions = buffer[i++];
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bool has_id = (flags_and_permissions & PICOBIN_PARTITION_FLAGS_HAS_ID_BITS);
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if (has_id) {
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uint64_t id = 0;
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id |= buffer[i++];
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id |= ((uint64_t)(buffer[i++]) << 32ull);
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if (id == CYW43_FIRMWARE_PARTITION_ID) {
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picked_p = p;
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break;
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}
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}
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p++;
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}
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if (picked_p >= 0) {
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#ifdef __riscv
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// Increased bootrom stack is required for this function
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bootrom_stack_t stack = {
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.base = malloc(0x400),
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.size = 0x400
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};
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rom_set_bootrom_stack(&stack);
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#endif
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uint32_t* workarea = malloc(0x1000);
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picked_p = rom_pick_ab_update_partition(workarea, 0x1000, picked_p);
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free(workarea);
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#ifdef __riscv
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// Reset bootrom stack
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rom_set_bootrom_stack(&stack);
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free(stack.base);
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#endif
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if (picked_p < 0) {
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if (picked_p == BOOTROM_ERROR_NOT_FOUND) {
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CYW43_DEBUG("Chosen CYW43 firmware partition was not verified\n");
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} else if (picked_p == BOOTROM_ERROR_NOT_PERMITTED) {
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CYW43_DEBUG("Too many update boots going on at once\n");
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}
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return false;
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}
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CYW43_DEBUG("Chosen CYW43 firmware in partition %d\n", picked_p);
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int ret = rom_get_partition_table_info(buffer, count_of(buffer), PT_INFO_PARTITION_LOCATION_AND_FLAGS | PT_INFO_SINGLE_PARTITION | (picked_p << 24));
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assert(buffer[0] == (PT_INFO_PARTITION_LOCATION_AND_FLAGS | PT_INFO_SINGLE_PARTITION));
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assert(ret == 3);
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uint32_t location_and_permissions = buffer[1];
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uint32_t saddr = ((location_and_permissions >> PICOBIN_PARTITION_LOCATION_FIRST_SECTOR_LSB) & 0x1fffu) * FLASH_SECTOR_SIZE;
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uint32_t eaddr = (((location_and_permissions >> PICOBIN_PARTITION_LOCATION_LAST_SECTOR_LSB) & 0x1fffu) + 1) * FLASH_SECTOR_SIZE;
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// Starts with metadata block
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while(saddr < eaddr && *(uint32_t*)(XIP_NOCACHE_NOALLOC_NOTRANSLATE_BASE + saddr) != PICOBIN_BLOCK_MARKER_END) {
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saddr += 4;
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}
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saddr += 4;
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// Now onto data
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cyw43_wifi_fw_len = *(uint32_t*)(XIP_NOCACHE_NOALLOC_NOTRANSLATE_BASE + saddr);
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cyw43_clm_len = *(uint32_t*)(XIP_NOCACHE_NOALLOC_NOTRANSLATE_BASE + saddr + 4);
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fw_data = XIP_NOCACHE_NOALLOC_NOTRANSLATE_BASE + saddr + 8;
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} else {
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CYW43_DEBUG("No CYW43 firmware partition found, so cannot get firmware from partition\n");
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return false;
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}
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} else {
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CYW43_DEBUG("No partition table, so cannot get firmware from partition - get_partition_table_info returned %d\n", ret);
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return false;
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}
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#endif
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cyw43_init(&cyw43_state);
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cyw43_async_context = context;
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// we need the IRQ to be on the same core as the context, because we need to be able to enable/disable the IRQ
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@ -114,13 +206,15 @@ bool cyw43_driver_init(async_context_t *context) {
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}
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void cyw43_driver_deinit(async_context_t *context) {
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assert(context == cyw43_async_context);
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async_context_remove_at_time_worker(context, &sleep_timeout_worker);
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async_context_remove_when_pending_worker(context, &cyw43_poll_worker);
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// the IRQ IS on the same core as the context, so must be de-initialized there
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async_context_execute_sync(context, cyw43_irq_deinit, NULL);
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cyw43_deinit(&cyw43_state);
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cyw43_async_context = NULL;
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if (cyw43_async_context != NULL) {
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assert(context == cyw43_async_context);
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async_context_remove_at_time_worker(context, &sleep_timeout_worker);
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async_context_remove_when_pending_worker(context, &cyw43_poll_worker);
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// the IRQ IS on the same core as the context, so must be de-initialized there
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async_context_execute_sync(context, cyw43_irq_deinit, NULL);
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cyw43_deinit(&cyw43_state);
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cyw43_async_context = NULL;
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}
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}
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// todo maybe add an #ifdef in cyw43_driver
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44
src/rp2_common/pico_cyw43_driver/cyw43_firmware.py
Normal file
44
src/rp2_common/pico_cyw43_driver/cyw43_firmware.py
Normal file
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@ -0,0 +1,44 @@
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#!/usr/bin/env python3
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#
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# Copyright (c) 2024 Raspberry Pi (Trading) Ltd.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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import sys
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import re
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assert len(sys.argv) == 3
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cyw43_wifi_fw_len = -1
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cyw43_clm_len = -1
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with open(sys.argv[1], "r") as f:
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data = f.read()
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statements = data.split(";")
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for line in statements[1].split("\n"):
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if "#define CYW43_WIFI_FW_LEN" in line:
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matches = re.search(r"#define\s+\S+\s+\((\S+)\)", line)
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cyw43_wifi_fw_len = int(matches[1])
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elif "#define CYW43_CLM_LEN" in line:
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matches = re.search(r"#define\s+\S+\s+\((\S+)\)", line)
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cyw43_clm_len = int(matches[1])
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if cyw43_wifi_fw_len > 0 and cyw43_clm_len > 0:
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break
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data = statements[0]
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bits = data.split(",")
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bits[0] = bits[0].split("{")[-1]
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bits[-1] = bits[-1].split("}")[0]
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for i in range(len(bits)):
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bits[i] = bits[i].strip()
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bits[i] = bits[i].strip(',')
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bits[i] = int(bits[i], base=0)
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data = (
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cyw43_wifi_fw_len.to_bytes(4, 'little', signed=True) +
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cyw43_clm_len.to_bytes(4, 'little', signed=True) +
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bytearray(bits)
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)
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with open(sys.argv[2], "w") as f:
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for b in data:
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f.write(f".byte 0x{b:02x}\n")
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@ -63,12 +63,16 @@ extern "C" {
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#endif
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#ifndef CYW43_CHIPSET_FIRMWARE_INCLUDE_FILE
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#if CYW43_USE_FIRMWARE_PARTITION
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#define CYW43_CHIPSET_FIRMWARE_INCLUDE_FILE "cyw43_partition_firmware.h"
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#else
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#if CYW43_ENABLE_BLUETOOTH
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#define CYW43_CHIPSET_FIRMWARE_INCLUDE_FILE "wb43439A0_7_95_49_00_combined.h"
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#else
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#define CYW43_CHIPSET_FIRMWARE_INCLUDE_FILE "w43439A0_7_95_49_00_combined.h"
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#endif
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#endif
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#endif
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#ifndef CYW43_WIFI_NVRAM_INCLUDE_FILE
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#define CYW43_WIFI_NVRAM_INCLUDE_FILE "wifi_nvram_43439.h"
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@ -0,0 +1,15 @@
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/*
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* Copyright (c) 2024 Raspberry Pi (Trading) Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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extern int cyw43_wifi_fw_len;
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extern int cyw43_clm_len;
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#define CYW43_WIFI_FW_LEN (cyw43_wifi_fw_len)
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#define CYW43_CLM_LEN (cyw43_clm_len)
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extern uintptr_t fw_data;
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#include "boot/picobin.h"
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#include "pico/bootrom.h"
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@ -20,6 +20,14 @@
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#include "cyw43_configport.h"
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#endif
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#if CYW43_USE_FIRMWARE_PARTITION
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// PICO_CONFIG: CYW43_FIRMWARE_PARTITION_ID, ID of Wi-Fi firmware partition which must match the ID used in the partition table JSON, type=int, default=0x776966696669726d, group=pico_cyw43_driver
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#ifndef CYW43_FIRMWARE_PARTITION_ID
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// The default 0x776966696669726d value is the ASCII encoding of "wififirm"
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#define CYW43_FIRMWARE_PARTITION_ID 0x776966696669726d
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#endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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65
src/rp2_common/pico_cyw43_driver/wifi_firmware.S
Normal file
65
src/rp2_common/pico_cyw43_driver/wifi_firmware.S
Normal file
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@ -0,0 +1,65 @@
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/*
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* Copyright (c) 2024 Raspberry Pi (Trading) Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include "boot/picobin.h"
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#if PICO_CRT0_IMAGE_TYPE_TBYB
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#define CRT0_TBYB_FLAG PICOBIN_IMAGE_TYPE_EXE_TBYB_BITS
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#else
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#define CRT0_TBYB_FLAG 0
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#endif
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.section .wifi_fw, "a"
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.global _start
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_start:
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.word 0
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.word 0
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.word 0
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.word 0
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.p2align 2
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embedded_block:
|
||||
.word PICOBIN_BLOCK_MARKER_START
|
||||
|
||||
.byte PICOBIN_BLOCK_ITEM_1BS_IMAGE_TYPE
|
||||
.byte 0x1 // 1 word
|
||||
.hword PICOBIN_IMAGE_TYPE_IMAGE_TYPE_AS_BITS(EXE) | \
|
||||
PICOBIN_IMAGE_TYPE_EXE_CPU_AS_BITS(RISCV) | \
|
||||
PICOBIN_IMAGE_TYPE_EXE_CHIP_AS_BITS(RP2350) | \
|
||||
CRT0_TBYB_FLAG
|
||||
|
||||
// Entry point into SRAM
|
||||
.byte PICOBIN_BLOCK_ITEM_1BS_ENTRY_POINT
|
||||
.byte 0x3 // word size to next item
|
||||
.byte 0 // pad
|
||||
.byte 0 // pad
|
||||
.word _start
|
||||
.word 0x20082000 // stack pointer
|
||||
|
||||
_lm_item:
|
||||
.byte PICOBIN_BLOCK_ITEM_LOAD_MAP
|
||||
.byte 7
|
||||
.byte 0 // pad
|
||||
.byte 2 // 2 entries
|
||||
// To sign the firmware
|
||||
.word (_start - _lm_item)
|
||||
.word _start
|
||||
.word (firmware_end - _start)
|
||||
// But clear SRAM if actually running this, so it doesn't boot
|
||||
.word 0
|
||||
.word _start
|
||||
.word 0x00082000
|
||||
|
||||
.byte PICOBIN_BLOCK_ITEM_2BS_LAST
|
||||
.hword (embedded_block_end - embedded_block - 16 ) / 4 // total size of all
|
||||
.byte 0
|
||||
.word 0
|
||||
.word PICOBIN_BLOCK_MARKER_END
|
||||
embedded_block_end:
|
||||
|
||||
#include "firmware_blob.S"
|
||||
|
||||
firmware_end:
|
||||
14
src/rp2_common/pico_cyw43_driver/wifi_firmware.ld
Normal file
14
src/rp2_common/pico_cyw43_driver/wifi_firmware.ld
Normal file
|
|
@ -0,0 +1,14 @@
|
|||
MEMORY
|
||||
{
|
||||
RAM(rx) : ORIGIN = 0x20000000, LENGTH = 512k
|
||||
}
|
||||
|
||||
ENTRY(_start)
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
.wifi_fw : {
|
||||
*(.wifi_fw*)
|
||||
. = ALIGN(4);
|
||||
} > RAM
|
||||
}
|
||||
52
src/rp2_common/pico_cyw43_driver/wifi_pt.json
Normal file
52
src/rp2_common/pico_cyw43_driver/wifi_pt.json
Normal file
|
|
@ -0,0 +1,52 @@
|
|||
{
|
||||
"version": [1, 0],
|
||||
"unpartitioned": {
|
||||
"families": ["absolute"],
|
||||
"permissions": {
|
||||
"secure": "rw",
|
||||
"nonsecure": "rw",
|
||||
"bootloader": "rw"
|
||||
}
|
||||
},
|
||||
"partitions": [
|
||||
{
|
||||
"name": "Main",
|
||||
"id": 0,
|
||||
"start": 0,
|
||||
"size": "3500K",
|
||||
"families": ["rp2350-arm-s", "rp2350-riscv"],
|
||||
"permissions": {
|
||||
"secure": "rw",
|
||||
"nonsecure": "rw",
|
||||
"bootloader": "rw"
|
||||
}
|
||||
},
|
||||
{
|
||||
"name": "Wi-Fi Firmware",
|
||||
"id": "0x776966696669726d",
|
||||
"start": "3500k",
|
||||
"size": "256K",
|
||||
"families": ["cyw43-firmware"],
|
||||
"permissions": {
|
||||
"secure": "rw",
|
||||
"nonsecure": "rw",
|
||||
"bootloader": "rw"
|
||||
},
|
||||
"ignored_during_riscv_boot": true,
|
||||
"no_reboot_on_uf2_download": true
|
||||
},
|
||||
{
|
||||
"start": "3500k",
|
||||
"size": "256k",
|
||||
"families": ["cyw43-firmware"],
|
||||
"permissions": {
|
||||
"secure": "rw",
|
||||
"nonsecure": "rw",
|
||||
"bootloader": "rw"
|
||||
},
|
||||
"link": ["a", 1],
|
||||
"ignored_during_riscv_boot": true,
|
||||
"no_reboot_on_uf2_download": true
|
||||
}
|
||||
]
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue