edit makefile for copying image and config to sd card

part15-tcpip-webserver/Makefile

@@ -1,20 +1,25 @@
+BOOTMNT ?= /media/cvdeveloper/bootfs
+
 CFILES = $(wildcard *.c lib/*.c kernel/*.c net/*.c tcpip/*.c)
 SFILES = $(wildcard boot/*.S lib/*.S kernel/*.S)
 OFILES = $(CFILES:.c=.o) $(SFILES:.S=.o)
-LLVMPATH = /opt/homebrew/opt/llvm/bin
+GCCFLAGS = -Wall -O0 -ffreestanding -nostdlib -nostartfiles
-CLANGFLAGS = -Wall -O0 -ffreestanding -nostdlib -mcpu=cortex-a72+nosimd
+GCCPATH = ../../gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf/bin
 
 all: clean kernel8.img
 
 %.o: %.c
-	$(LLVMPATH)/clang --target=aarch64-elf $(CLANGFLAGS) -c $< -o $@
+	$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
 
 %.o: %.S
-	$(LLVMPATH)/clang --target=aarch64-elf $(CLANGFLAGS) -c $< -o $@
+	$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
 
 kernel8.img: $(OFILES)
-	$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib $(OFILES) -T boot/link.ld -o kernel8.elf
+	$(GCCPATH)/aarch64-none-elf-ld -nostdlib $(OFILES) -T boot/link.ld -o kernel8.elf
-	$(LLVMPATH)/llvm-objcopy -O binary kernel8.elf kernel8.img
+	$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
+	cp kernel8.img $(BOOTMNT)/kernel8.img
+	cp config.txt $(BOOTMNT)/
+	sync
 
 clean:
 	/bin/rm kernel8.elf */*.o *.img > /dev/null 2> /dev/null || true

part15-tcpip-webserver/Makefile.gcc

@@ -1,20 +0,0 @@
-CFILES = $(wildcard *.c lib/*.c kernel/*.c net/*.c tcpip/*.c)
-SFILES = $(wildcard boot/*.S lib/*.S kernel/*.S)
-OFILES = $(CFILES:.c=.o) $(SFILES:.S=.o)
-GCCFLAGS = -Wall -O0 -ffreestanding -nostdlib -nostartfiles
-GCCPATH = ../../gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf/bin
-
-all: clean kernel8.img
-
-%.o: %.c
-	$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
-
-%.o: %.S
-	$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
-
-kernel8.img: $(OFILES)
-	$(GCCPATH)/aarch64-none-elf-ld -nostdlib $(OFILES) -T boot/link.ld -o kernel8.elf
-	$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
-
-clean:
-	/bin/rm kernel8.elf */*.o *.img > /dev/null 2> /dev/null || true

part15-tcpip-webserver/config.txt

@@ -0,0 +1,53 @@
+# For more options and information see
+# http://rptl.io/configtxt
+# Some settings may impact device functionality. See link above for details
+
+# Uncomment some or all of these to enable the optional hardware interfaces
+#dtparam=i2c_arm=on
+#dtparam=i2s=on
+#dtparam=spi=on
+
+# Enable audio (loads snd_bcm2835)
+dtparam=audio=on
+
+# Additional overlays and parameters are documented
+# /boot/firmware/overlays/README
+
+# Automatically load overlays for detected cameras
+camera_auto_detect=1
+
+# Automatically load overlays for detected DSI displays
+display_auto_detect=1
+
+# Automatically load initramfs files, if found
+auto_initramfs=1
+
+# Enable DRM VC4 V3D driver
+dtoverlay=vc4-kms-v3d
+max_framebuffers=2
+
+# Don't have the firmware create an initial video= setting in cmdline.txt.
+# Use the kernel's default instead.
+disable_fw_kms_setup=1
+
+# Run in 64-bit mode
+arm_64bit=1
+
+# Disable compensation for displays with overscan
+disable_overscan=1
+
+# Run as fast as firmware / board allows
+arm_boost=1
+
+[cm4]
+# Enable host mode on the 2711 built-in XHCI USB controller.
+# This line should be removed if the legacy DWC2 controller is required
+# (e.g. for USB device mode) or if USB support is not required.
+otg_mode=1
+
+[all]
+kernel_old=1
+disable_commandline_tags=1
+core_freq_min=500
+hdmi_group=1
+hdmi_mode=16

part15-tcpip-webserver/kernel/kernel.c

@@ -59,7 +59,7 @@ ENC_HandleTypeDef handle;
 unsigned char myMAC[6] = { 0xc0, 0xff, 0xee, 0xc0, 0xff, 0xee };
 
 // IP address to be assigned to the ENC28J60
-unsigned char deviceIP[4] = { 192, 168, 0, 66 };
+unsigned char deviceIP[4] = { 10, 7, 3, 20 };
 
 void init_network(void)
 {