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target/espressif: add algorithm support to xtensa chips

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Also includes esp_xtensa flasher stub jumper binary.

Signed-off-by: Erhan Kurubas <erhan.kurubas@espressif.com>
Change-Id: I054ce31033ca6a87afe9b5325b545338a7d8fe8f
Reviewed-on: https://review.openocd.org/c/openocd/+/7772
Tested-by: jenkins
Reviewed-by: Ian Thompson <ianst@cadence.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Erhan Kurubas
2023-07-10 23:47:06 +02:00
committed by Antonio Borneo
parent d06d8ea3e4
commit 4003762177
12 changed files with 274 additions and 1 deletions
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38
contrib/loaders/trampoline/espressif/xtensa/Makefile Normal file
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# SPDX-License-Identifier: GPL-2.0-or-later
# Espressif Xtensa Makefile to compile flasher stub wrapper
# Copyright (C) 2023 Espressif Systems Ltd.
# Prefix for Espressif xtensa cross compilers (can include a directory path)
CROSS ?= xtensa-esp32-elf-
APP_ARCH := xtensa
APP_CHIP_PATH := $(shell pwd)
SRCS := $(APP_CHIP_PATH)/esp_xtensa_stub_tramp_win.S
BIN2C = ../../../../../src/helper/bin2char.sh
BUILD_DIR = build
APP = esp_xtensa_stub_tramp_win
APP_OBJ = $(BUILD_DIR)/$(APP).o
APP_BIN = $(BUILD_DIR)/$(APP).bin
APP_CODE = $(APP).inc
.PHONY: all clean
all: $(BUILD_DIR) $(APP_OBJ) $(APP_CODE)
$(BUILD_DIR):
$(Q) mkdir $@
$(APP_OBJ): $(SRCS)
@echo " CC $^ -> $@"
$(Q) $(CROSS)gcc -c $(CFLAGS) -o $@ $^
$(APP_CODE): $(APP_OBJ)
@echo " CC $^ -> $@"
$(Q) $(CROSS)objcopy -O binary -j.text $^ $(APP_BIN)
$(Q) $(BIN2C) < $(APP_BIN) > $@
clean:
$(Q) rm -rf $(BUILD_DIR)

41
contrib/loaders/trampoline/espressif/xtensa/esp_xtensa_stub_tramp_win.S Normal file
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/***************************************************************************
* Xtensa flasher stub wrapper *
* Copyright (C) 2017 Espressif Systems Ltd. *
***************************************************************************/
/*
* Expects :
* a0 = zero
* a1 = stack_base + stack_size - 16, 16 bytes aligned
* a8 = address of the function to call
* Params :
* a2 = command arg0, result (out)
* a3 = command arg1
* a4 = command arg2
* a5 = command arg3
* a6 = command arg4
* Maximum 5 user args
*/
.text
.align 4
_stub_enter:
/* initialize initial stack frame for callx8 */
addi a9, sp, 32 /* point 16 past extra save area */
s32e a9, sp, -12 /* access to extra save area */
/* prepare args */
mov a10, a2
mov a11, a3
mov a12, a4
mov a13, a5
mov a14, a6
/* call stub */
callx8 a8
/* prepare return value */
mov a2, a10
break 0,0
_idle_loop:
j _idle_loop

3
contrib/loaders/trampoline/espressif/xtensa/esp_xtensa_stub_tramp_win.inc Normal file
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/* Autogenerated with ../../../../../src/helper/bin2char.sh */
0x92,0xc1,0x20,0x90,0xd1,0x49,0xad,0x02,0xbd,0x03,0xcd,0x04,0xdd,0x05,0x60,0xe6,
0x20,0xe0,0x08,0x00,0x2d,0x0a,0x00,0x40,0x00,0x06,0xff,0xff,