loader
This commit is contained in:
@@ -1,13 +1,13 @@
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# This variable should contain a space separated list of all
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# the directories containing buildable applications (usually
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# prefixed with the app_ prefix)
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TARGET = xk-audio-316-mc.xn
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BUILD_SUBDIRS = all
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XMOS_MAKE_PATH ?= ../..
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include $(XMOS_MAKE_PATH)/xcommon/module_xcommon/build/Makefile.toplevel
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# This variable should contain a space separated list of all
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# the directories containing buildable applications (usually
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# prefixed with the app_ prefix)
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TARGET = xk-audio-316-mc.xn
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BUILD_SUBDIRS = all
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XMOS_MAKE_PATH ?= ../..
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include $(XMOS_MAKE_PATH)/xcommon/module_xcommon/build/Makefile.toplevel
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@@ -1,28 +1,28 @@
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TARGET = PHATEN_GS.xn
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SOURCE = loader.xc
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OBJS = loader.o
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OUT =
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CC = xcc
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CFLAGS = -c -Wall -march=xs3a
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LFLAGS = -lflash
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all: $(OBJS)
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loader.o: loader.xc
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$(CC) $(TARGET) $(FLAGS) loader.xc -o $(OBJS)
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$(OUT):loader.o
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$(CC) loader.o $(TARGET) $(LFLAGS) -o $(OUT)
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clean:
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rm -f $(OBJS) $(OUT)
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XMOS_MAKE_PATH ?= ../..
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ifneq ($(wildcard $(XMOS_MAKE_PATH)/xcommon/module_xcommon/build/Makefile.common),)
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include $(XMOS_MAKE_PATH)/xcommon/module_xcommon/build/Makefile.common
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else
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include ../module_xcommon/build/Makefile.common
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endif
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TARGET = PHATEN_GS.xn
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SOURCE = loader.xc
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OBJS = loader.o
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OUT =
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CC = xcc
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CFLAGS = -c -Wall -march=xs3a
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LFLAGS = -lflash
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all: $(OBJS)
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loader.o: loader.xc
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$(CC) $(TARGET) $(FLAGS) loader.xc -o $(OBJS)
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$(OUT):loader.o
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$(CC) loader.o $(TARGET) $(LFLAGS) -o $(OUT)
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clean:
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rm -f $(OBJS) $(OUT)
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XMOS_MAKE_PATH ?= ../..
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ifneq ($(wildcard $(XMOS_MAKE_PATH)/xcommon/module_xcommon/build/Makefile.common),)
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include $(XMOS_MAKE_PATH)/xcommon/module_xcommon/build/Makefile.common
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else
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include ../module_xcommon/build/Makefile.common
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endif
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@@ -1,211 +1,211 @@
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// Copyright (c) 2016, XMOS Ltd, All rights reserved
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#include <xs1.h>
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#include <platform.h>
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//port SPI_MOSI = XS1_PORT_1D; // e.g., XS1_PORT_1D
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//port SPI_MISO = XS1_PORT_1A; // e.g., XS1_PORT_1A
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//port SPI_CLK = XS1_PORT_1C; // e.g., XS1_PORT_1C
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//port SPI_SS = XS1_PORT_1B; // e.g., XS1_PORT_1B
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#if defined(__XS2A__)
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/* Note range 0x7FFC8 - 0x7FFFF guarenteed to be untouched by tools */
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#warning Building xCORE-200 compatible loader
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#define FLAG_ADDRESS 0x7ffcc
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#else
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/* Note range 0xFFFC8 - 0xFFFFF guarenteed to be untouched by tools */
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#warning Building xcore.ai compatible loader
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#define FLAG_ADDRESS 0xfffcc
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#endif
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/* Store Flag to fixed address */
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void SetRoleSwitchFlag(unsigned x)
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{
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asm volatile("stw %0, %1[0]" :: "r"(x), "r"(FLAG_ADDRESS));
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}
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/* Load flag from fixed address */
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unsigned GetRoleSwitchFlag()
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{
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unsigned x;
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asm volatile("ldw %0, %1[0]" : "=r"(x) : "r"(FLAG_ADDRESS));
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return x;
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}
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void delay_cycles(int count) {
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for (int i = 0; i < count; i++) {
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asm volatile (""); // Prevent compiler removal.
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}
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}
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/*
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* spi_transact_32_full: Sends 32 bits out on MOSI and simultaneously reads 32 bits from MISO.
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*
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* Parameters:
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* unsigned data - The 32-bit word to send over MOSI.
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*
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* Returns:
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* The 32-bit word received from MISO.
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*
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* Assumptions:
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* - The chip-select (SS) is already asserted (active low).
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* - The SPI_CLK, SPI_MOSI, and SPI_MISO ports have been correctly defined in the XN file.
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* - The transfer is LSB-first; adjust shifting/ordering if your device expects MSB-first.
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*/
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//unsigned spi_transact_32_full(unsigned data) {
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// unsigned received = 0;
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// for (int bit = 0; bit < 32; bit++) {
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// // Drive clock low.
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// SPI_CLK <: 0;
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// delay_cycles(5);
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//
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// // Set MOSI line according to the current LSB of data.
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// if (data & 0x1)
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// SPI_MOSI <: 1;
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// else
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// SPI_MOSI <: 0;
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// delay_cycles(5);
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//
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// // Raise clock; the rising edge clocks both the outgoing bit and makes the incoming bit valid.
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// SPI_CLK <: 1;
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// delay_cycles(5);
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//
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// // Read the corresponding MISO bit.
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// int bit_val = 0;
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// SPI_MISO :> bit_val;
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// bit_val &= 0x1;
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//
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// received |= (bit_val << bit);
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//
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// // Prepare the next bit to be transmitted.
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// data >>= 1;
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// }
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// // Ensure the clock ends in a low state.
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// SPI_CLK <: 0;
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// return received;
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//}
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/* Port for button on xk-audio-316 board. */
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in port p_button = XS1_PORT_4E;
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out port port_audio_config = XS1_PORT_8D;
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/* Enum for representing button state. */
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enum button_val
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{
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MODE_STEREO,
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MODE_71_GAME,
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MODE_TOTAL
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};
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/* Store the button position. */
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int buttonPosition;
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/* Enum for representing the potential interest in the image. */
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enum interest
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{
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NOT_INTERESTED = 0,
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INTERESTED = 1
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};
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#define SWITCH_TO_STEREO_DNR_OFF 0x01
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#define SWITCH_TO_STEREO_DNR_ON 0x02
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#define SWITCH_TO_71_DNR_OFF 0x03
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#define SWITCH_TO_71_DNR_ON 0x04
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int get_ids() {
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// TODO, consider just bit bashing SPI at a low speed to just get the darn FlashIdNum!
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int success;
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// success = fl_connect(SPI);
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// Check success
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// int identifier = fl_getFlashIdNum();
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// unsigned char idStr[MAX_LEN];
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// success = fl_getFlashIdStr(idStr, MAX_LEN);
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// Check success
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// success = spi_transact_32_full(0x9F);
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// success = spi_transact_32_full(0x9F);
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// success = spi_transact_32_full(0x9F);
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return success;
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}
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/* Store the version of the image in memory that will potentially be booted. */
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int candidateImageVersion = -1;
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/* Store the address of the image in memory that will potentially be booted. */
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unsigned candidateImageAddress;
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void init(void)
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{
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//port_audio_config <: 0b00100000;
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delay_milliseconds(10);
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unsigned buttonVal;
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/* Read state of button. */
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//buttonVal=get_ids();//p_button :> buttonVal;
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buttonVal = GetRoleSwitchFlag();
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if (buttonVal == 0) {
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buttonPosition = MODE_TOTAL;
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} else {
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if ( (buttonVal == SWITCH_TO_STEREO_DNR_OFF) || (buttonVal == SWITCH_TO_STEREO_DNR_ON)) {
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buttonPosition = MODE_STEREO;
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} else {
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buttonPosition = MODE_71_GAME;
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}
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}
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#if 0
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/* Button is up. */
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if((buttonVal) > 1)
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{
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buttonPosition = MODE_STEREO;
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}
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/* Button is down. */
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else
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{
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buttonPosition = MODE_71_GAME;
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}
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#endif
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}
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extern int checkCandidateImageVersion(int imageVersion)
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{
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/* If the button is up and imageVersion is even and imageVersion is higher */
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/* than the last candidateImageVersion then this is a potential version */
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/* for booting. */
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if (buttonPosition == MODE_TOTAL) return INTERESTED;
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if ((buttonPosition == MODE_71_GAME) &&
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((imageVersion % 2) == 0) /*&&*/
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/*(imageVersion > candidateImageVersion)*/)
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{
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return INTERESTED;
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}
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/* If the button is down and imageVersion is odd and imageVersion is higher */
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/* than the last candidateImageVersion then this is a potential version */
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/* for booting. */
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else if ((buttonPosition == MODE_STEREO) &&
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((imageVersion % 2) != 0) /*&&*/
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/*(imageVersion > candidateImageVersion)*/)
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{
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return INTERESTED;
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}
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/* Not a potential firmware image in all other cases. */
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return NOT_INTERESTED;
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}
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extern void recordCandidateImage(int imageVersion, unsigned imageAddress)
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{
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/* Save the imageVersion that we are interested in. */
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candidateImageVersion = imageVersion;
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/* Save the imageAddress of the imageVersion that we are interested in. */
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candidateImageAddress = imageAddress;
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}
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extern unsigned reportSelectedImage(void)
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{
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/* Return the candidateImageAddress of the image that we are interested in. */
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return candidateImageAddress;
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}
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// Copyright (c) 2016, XMOS Ltd, All rights reserved
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#include <xs1.h>
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#include <platform.h>
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//port SPI_MOSI = XS1_PORT_1D; // e.g., XS1_PORT_1D
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//port SPI_MISO = XS1_PORT_1A; // e.g., XS1_PORT_1A
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//port SPI_CLK = XS1_PORT_1C; // e.g., XS1_PORT_1C
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//port SPI_SS = XS1_PORT_1B; // e.g., XS1_PORT_1B
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#if defined(__XS2A__)
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/* Note range 0x7FFC8 - 0x7FFFF guarenteed to be untouched by tools */
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#warning Building xCORE-200 compatible loader
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||||
#define FLAG_ADDRESS 0x7ffcc
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#else
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||||
/* Note range 0xFFFC8 - 0xFFFFF guarenteed to be untouched by tools */
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||||
#warning Building xcore.ai compatible loader
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||||
#define FLAG_ADDRESS 0xfffcc
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#endif
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/* Store Flag to fixed address */
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void SetRoleSwitchFlag(unsigned x)
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{
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asm volatile("stw %0, %1[0]" :: "r"(x), "r"(FLAG_ADDRESS));
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}
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/* Load flag from fixed address */
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unsigned GetRoleSwitchFlag()
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{
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unsigned x;
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asm volatile("ldw %0, %1[0]" : "=r"(x) : "r"(FLAG_ADDRESS));
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return x;
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}
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|
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|
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void delay_cycles(int count) {
|
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for (int i = 0; i < count; i++) {
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asm volatile (""); // Prevent compiler removal.
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* spi_transact_32_full: Sends 32 bits out on MOSI and simultaneously reads 32 bits from MISO.
|
||||
*
|
||||
* Parameters:
|
||||
* unsigned data - The 32-bit word to send over MOSI.
|
||||
*
|
||||
* Returns:
|
||||
* The 32-bit word received from MISO.
|
||||
*
|
||||
* Assumptions:
|
||||
* - The chip-select (SS) is already asserted (active low).
|
||||
* - The SPI_CLK, SPI_MOSI, and SPI_MISO ports have been correctly defined in the XN file.
|
||||
* - The transfer is LSB-first; adjust shifting/ordering if your device expects MSB-first.
|
||||
*/
|
||||
//unsigned spi_transact_32_full(unsigned data) {
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||||
// unsigned received = 0;
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||||
// for (int bit = 0; bit < 32; bit++) {
|
||||
// // Drive clock low.
|
||||
// SPI_CLK <: 0;
|
||||
// delay_cycles(5);
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||||
//
|
||||
// // Set MOSI line according to the current LSB of data.
|
||||
// if (data & 0x1)
|
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// SPI_MOSI <: 1;
|
||||
// else
|
||||
// SPI_MOSI <: 0;
|
||||
// delay_cycles(5);
|
||||
//
|
||||
// // Raise clock; the rising edge clocks both the outgoing bit and makes the incoming bit valid.
|
||||
// SPI_CLK <: 1;
|
||||
// delay_cycles(5);
|
||||
//
|
||||
// // Read the corresponding MISO bit.
|
||||
// int bit_val = 0;
|
||||
// SPI_MISO :> bit_val;
|
||||
// bit_val &= 0x1;
|
||||
//
|
||||
// received |= (bit_val << bit);
|
||||
//
|
||||
// // Prepare the next bit to be transmitted.
|
||||
// data >>= 1;
|
||||
// }
|
||||
// // Ensure the clock ends in a low state.
|
||||
// SPI_CLK <: 0;
|
||||
// return received;
|
||||
//}
|
||||
|
||||
|
||||
/* Port for button on xk-audio-316 board. */
|
||||
in port p_button = XS1_PORT_4E;
|
||||
out port port_audio_config = XS1_PORT_8D;
|
||||
|
||||
|
||||
/* Enum for representing button state. */
|
||||
enum button_val
|
||||
{
|
||||
MODE_STEREO,
|
||||
MODE_71_GAME,
|
||||
MODE_TOTAL
|
||||
};
|
||||
/* Store the button position. */
|
||||
int buttonPosition;
|
||||
/* Enum for representing the potential interest in the image. */
|
||||
enum interest
|
||||
{
|
||||
NOT_INTERESTED = 0,
|
||||
INTERESTED = 1
|
||||
};
|
||||
|
||||
#define SWITCH_TO_STEREO_DNR_OFF 0x01
|
||||
#define SWITCH_TO_STEREO_DNR_ON 0x02
|
||||
#define SWITCH_TO_71_DNR_OFF 0x03
|
||||
#define SWITCH_TO_71_DNR_ON 0x04
|
||||
|
||||
int get_ids() {
|
||||
// TODO, consider just bit bashing SPI at a low speed to just get the darn FlashIdNum!
|
||||
int success;
|
||||
// success = fl_connect(SPI);
|
||||
// Check success
|
||||
|
||||
// int identifier = fl_getFlashIdNum();
|
||||
|
||||
// unsigned char idStr[MAX_LEN];
|
||||
// success = fl_getFlashIdStr(idStr, MAX_LEN);
|
||||
// Check success
|
||||
|
||||
// success = spi_transact_32_full(0x9F);
|
||||
// success = spi_transact_32_full(0x9F);
|
||||
// success = spi_transact_32_full(0x9F);
|
||||
|
||||
|
||||
return success;
|
||||
|
||||
}
|
||||
|
||||
/* Store the version of the image in memory that will potentially be booted. */
|
||||
int candidateImageVersion = -1;
|
||||
/* Store the address of the image in memory that will potentially be booted. */
|
||||
unsigned candidateImageAddress;
|
||||
void init(void)
|
||||
{
|
||||
//port_audio_config <: 0b00100000;
|
||||
delay_milliseconds(10);
|
||||
unsigned buttonVal;
|
||||
/* Read state of button. */
|
||||
//buttonVal=get_ids();//p_button :> buttonVal;
|
||||
buttonVal = GetRoleSwitchFlag();
|
||||
if (buttonVal == 0) {
|
||||
buttonPosition = MODE_TOTAL;
|
||||
} else {
|
||||
if ( (buttonVal == SWITCH_TO_STEREO_DNR_OFF) || (buttonVal == SWITCH_TO_STEREO_DNR_ON)) {
|
||||
buttonPosition = MODE_STEREO;
|
||||
} else {
|
||||
buttonPosition = MODE_71_GAME;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#if 0
|
||||
/* Button is up. */
|
||||
if((buttonVal) > 1)
|
||||
{
|
||||
buttonPosition = MODE_STEREO;
|
||||
}
|
||||
/* Button is down. */
|
||||
else
|
||||
{
|
||||
buttonPosition = MODE_71_GAME;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
extern int checkCandidateImageVersion(int imageVersion)
|
||||
{
|
||||
/* If the button is up and imageVersion is even and imageVersion is higher */
|
||||
/* than the last candidateImageVersion then this is a potential version */
|
||||
/* for booting. */
|
||||
if (buttonPosition == MODE_TOTAL) return INTERESTED;
|
||||
if ((buttonPosition == MODE_71_GAME) &&
|
||||
((imageVersion % 2) == 0) /*&&*/
|
||||
/*(imageVersion > candidateImageVersion)*/)
|
||||
{
|
||||
return INTERESTED;
|
||||
}
|
||||
/* If the button is down and imageVersion is odd and imageVersion is higher */
|
||||
/* than the last candidateImageVersion then this is a potential version */
|
||||
/* for booting. */
|
||||
else if ((buttonPosition == MODE_STEREO) &&
|
||||
((imageVersion % 2) != 0) /*&&*/
|
||||
/*(imageVersion > candidateImageVersion)*/)
|
||||
{
|
||||
return INTERESTED;
|
||||
}
|
||||
/* Not a potential firmware image in all other cases. */
|
||||
return NOT_INTERESTED;
|
||||
}
|
||||
extern void recordCandidateImage(int imageVersion, unsigned imageAddress)
|
||||
{
|
||||
/* Save the imageVersion that we are interested in. */
|
||||
candidateImageVersion = imageVersion;
|
||||
/* Save the imageAddress of the imageVersion that we are interested in. */
|
||||
candidateImageAddress = imageAddress;
|
||||
}
|
||||
extern unsigned reportSelectedImage(void)
|
||||
{
|
||||
/* Return the candidateImageAddress of the image that we are interested in. */
|
||||
return candidateImageAddress;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user