Finally some progress.

Added debug capabilities inside of KERNEL_ADD in board config, also specifying ttys0 serial speed of 115200, which works now.
Added debugging through kexec -d call as well if DEBUG output activated in board config

Now Tinycore stalls at ethernet init, loop is established and resized multiple times, so it seems that tinycore has what he was searching for to prepare normal boot options in memory.
Investigating vga options and will output some info on PR

Author: tlaurion

boards/qemu-coreboot-whiptail-tpm1/qemu-coreboot-whiptail-tpm1.config

@@ -56,7 +56,7 @@ export CONFIG_BOOTSCRIPT=/bin/gui-init
 export CONFIG_BOOT_REQ_HASH=n
 export CONFIG_BOOT_REQ_ROLLBACK=n
 export CONFIG_BOOT_RECOVERY_SERIAL="/dev/ttyS0"
-export CONFIG_BOOT_KERNEL_ADD="console=ttyS0 console=tty systemd.zram=0"
+export CONFIG_BOOT_KERNEL_ADD="nosmp debug console=ttyS0,115200 console=tty systemd.zram=0"
 export CONFIG_BOOT_KERNEL_REMOVE="quiet rhgb splash"
 
 export CONFIG_TPM=y

config/linux-qemu.config

@@ -525,9 +525,9 @@ CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
 # Firmware Drivers
 #
 # CONFIG_EDD is not set
-CONFIG_FIRMWARE_MEMMAP=y
+# CONFIG_FIRMWARE_MEMMAP is not set
 # CONFIG_DMIID is not set
-CONFIG_DMI_SYSFS=y
+# CONFIG_DMI_SYSFS is not set
 CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
 # CONFIG_ISCSI_IBFT is not set
 # CONFIG_FW_CFG_SYSFS is not set
@@ -536,8 +536,8 @@ CONFIG_GOOGLE_FIRMWARE=y
 CONFIG_GOOGLE_COREBOOT_TABLE=y
 CONFIG_GOOGLE_MEMCONSOLE=y
 CONFIG_GOOGLE_MEMCONSOLE_X86_LEGACY=y
-# CONFIG_GOOGLE_FRAMEBUFFER_COREBOOT is not set
-# CONFIG_GOOGLE_MEMCONSOLE_COREBOOT is not set
+CONFIG_GOOGLE_FRAMEBUFFER_COREBOOT=y
+CONFIG_GOOGLE_MEMCONSOLE_COREBOOT=y
 # CONFIG_GOOGLE_VPD is not set
 
 #
@@ -1529,7 +1529,9 @@ CONFIG_DEVMEM=y
 CONFIG_NVRAM=y
 # CONFIG_RAW_DRIVER is not set
 CONFIG_DEVPORT=y
-# CONFIG_HPET is not set
+CONFIG_HPET=y
+CONFIG_HPET_MMAP=y
+CONFIG_HPET_MMAP_DEFAULT=y
 # CONFIG_HANGCHECK_TIMER is not set
 CONFIG_TCG_TPM=y
 CONFIG_HW_RANDOM_TPM=y

initrd/bin/kexec-boot

@@ -61,6 +61,10 @@ adjust_cmd_line() {
 	adjusted_cmd_line="y"
 }
 
+if [ "$CONFIG_DEBUG_OUTPUT" = "y" ];then
+	kexeccmd="$kexeccmd -d"
+fi
+
 module_number="1"
 while read line
 do
@@ -80,15 +84,17 @@ do
 		elif [ "$kexectype" = "elf" ]; then
 			DEBUG "kexectype= $kexectype"
 			DEBUG "restval= $restval"
+			DEBUG "kexeccmd= $kexeccmd"
 			DEBUG "filepath= $filepath"
-			#kexeccmd="$kexeccmd --noefi --console-vga -l $filepath"
+			kexeccmd="$kexeccmd --reuse-video-type -l $filepath"
 			#kexeccmd="$kexeccmd --command-line \"$restval vga=current\"" 
 			#kexeccmd="$kexeccmd --noefi --reset-vga -l $filepath"
 			#kexeccmd="$kexeccmd --noefi --console-vga --reuse-video-type -l $filepath"
 			#kexeccmd="$kexeccmd --noefi --real-mode --console-vga --reuse-video-type -l $filepath"
 			#kexeccmd="$kexeccmd -l $filepath --command-line \"$restval vga=current\""
-			kexeccmd="$kexeccmd -l $filepath"		
+			#kexeccmd="$kexeccmd -l $filepath"		
 		else
+			DEBUG "unknown kexectype!!!!"
 			kexeccmd="$kexeccmd -l $filepath"
 		fi
 	fi
@@ -152,4 +158,7 @@ if [ "$CONFIG_TPM" = "y" ]; then
 fi
 
 echo "Starting the new kernel"
+if [ "$CONFIG_DEBUG_OUTPUT" = "y" ];then
+	exec kexec -d -e
+fi
 exec kexec -e