Remove old test code

There is some code that I had there after messing with some of the
topics on Uros' blog (https://popovicu.com/), but that became irrelevant
after working on some other projects (e.g. fbos) or on other examples.

This commit also brings about a major overhaul on the structure of the
project. Hopefully it's now at a more ready state.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

18 files changed, 0 insertions, 139 deletions

diff --git a/arch/riscv/init/Makefile b/arch/riscv/init/Makefile
deleted file mode 100644
index 71405c3..0000000
--- a/arch/riscv/init/Makefile
+++ /dev/null
@@ -1,21 +0,0 @@
-CROSS_CC 	?= riscv64-suse-linux-gcc
-CROSS_LD 	?= riscv64-suse-linux-ld
-CCFLAGS  	 = -static
-
-##
-# Targets
-
-.PHONY: hello
-hello: clean
-	$(CROSS_CC) $(CCFLAGS) -o init hello.c
-	cpio -o -H newc < file_list.txt > initramfs.cpio
-
-.PHONY: shell
-shell: clean
-	$(CROSS_CC) $(CCFLAGS) -o init shell.c
-	GOOS=linux GOARCH=riscv64 go build little_shell.go
-	cpio -o -H newc < file_list.txt > initramfs.cpio
-
-.PHONY: clean
-clean:
-	@rm -f *.o init initramfs.cpio
diff --git a/arch/riscv/init/file_list.txt b/arch/riscv/init/file_list.txt
deleted file mode 100644
index 9dd8872..0000000
--- a/arch/riscv/init/file_list.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-init
-little_shell
diff --git a/arch/riscv/init/hello.c b/arch/riscv/init/hello.c
deleted file mode 100644
index d4e5892..0000000
--- a/arch/riscv/init/hello.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(int argc, char *argv[])
-{
-	printf("Hello, world!\n");
-	exit(0);
-}
diff --git a/arch/riscv/init/initramfs.cpio b/arch/riscv/init/initramfs.cpio
deleted file mode 100644
index 9918d17..0000000
--- a/arch/riscv/init/initramfs.cpio
+++ /dev/null
diff --git a/arch/riscv/init/little_shell.go b/arch/riscv/init/little_shell.go
deleted file mode 100644
index 7324323..0000000
--- a/arch/riscv/init/little_shell.go
+++ /dev/null
@@ -1,19 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-)
-
-func main() {
-	fmt.Println("Hello world from Go!")
-
-	reader := bufio.NewReader(os.Stdin)
-
-	for {
-		fmt.Print("Enter your command: ")
-		line, _ := reader.ReadString('\n')
-		fmt.Printf("Your command is: %s", line)
-	}
-}
diff --git a/arch/riscv/init/shell.c b/arch/riscv/init/shell.c
deleted file mode 100644
index d44b1c7..0000000
--- a/arch/riscv/init/shell.c
+++ /dev/null
@@ -1,32 +0,0 @@
-#include <stdio.h>
-#include <unistd.h>
-
-int main(int argc, char *argv[])
-{
-	pid_t pid = fork();
-
-	if (pid == -1) {
-		printf("Unable to fork!");
-		return -1;
-	}
-
-	if (pid == 0) {
-		// This is a child process.
-		int status = execl("/little_shell", "irrelevant", NULL);
-
-		if (status == -1) {
-			printf("Forked process cannot start the little_shell");
-			return -2;
-		}
-	}
-
-	int count = 1;
-
-	while (1) {
-		printf("Hello from the original init! %d\n", count);
-		count++;
-		sleep(10);
-	}
-
-	return 0;
-}
diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile
deleted file mode 100644
index e943353..0000000
--- a/arch/riscv/kernel/Makefile
+++ /dev/null
@@ -1,20 +0,0 @@
-CROSS_AS 	?= riscv64-suse-linux-as
-CROSS_LD 	?= riscv64-suse-linux-ld
-ASFLAGS  	 = -march=rv64g -mabi=lp64
-
-##
-# Targets
-
-.PHONY: infinite
-infinite: clean
-	$(CROSS_AS) $(ASFLAGS) -o infinite.o -c infinite.s
-	$(CROSS_LD) -T infinite.ld infinite.o -o infinite
-
-.PHONY: hello
-hello: clean
-	$(CROSS_AS) $(ASFLAGS) -o hello.o -c hello.s
-	$(CROSS_LD) -T hello.ld hello.o -o hello
-
-.PHONY: clean
-clean:
-	@rm -f *.o infinite hello
diff --git a/arch/riscv/kernel/hello.ld b/arch/riscv/kernel/hello.ld
deleted file mode 100644
index e4af459..0000000
--- a/arch/riscv/kernel/hello.ld
+++ /dev/null
@@ -1,9 +0,0 @@
-MEMORY {
-  kernel_space (rwx) : ORIGIN = 0x80200000, LENGTH = 128
-}
-
-SECTIONS {
-  .text : {
-    hello.o(.text.kernel)
-  } > kernel_space
-}
diff --git a/arch/riscv/kernel/hello.s b/arch/riscv/kernel/hello.s
deleted file mode 100644
index eacd797..0000000
--- a/arch/riscv/kernel/hello.s
+++ /dev/null
@@ -1,15 +0,0 @@
-.global _start
-.section .text.kernel
-
-_start: li a7, 0x4442434E
-        li a6, 0x00
-        li a0, 12
-        lla a1, debug_string
-        li a2, 0
-        ecall
-
-loop:   j loop
-
-        .section .rodata
-debug_string:
-        .string "Hello world\n"
diff --git a/arch/riscv/kernel/infinite.ld b/arch/riscv/kernel/infinite.ld
deleted file mode 100644
index 2eee384..0000000
--- a/arch/riscv/kernel/infinite.ld
+++ /dev/null
@@ -1,9 +0,0 @@
-MEMORY {
-  kernel_space (rwx) : ORIGIN = 0x80200000, LENGTH = 128
-}
-
-SECTIONS {
-  .text : {
-    infinite.o(.text.kernel)
-  } > kernel_space
-}
diff --git a/arch/riscv/kernel/infinite.s b/arch/riscv/kernel/infinite.s
deleted file mode 100644
index 855f58e..0000000
--- a/arch/riscv/kernel/infinite.s
+++ /dev/null
@@ -1,4 +0,0 @@
-	.global _start
-	.section .text.kernel
-
-_start:	j _start
diff --git a/arch/riscv/usr/Makefile b/arch/riscv/user/basics/Makefile
index b4752a3..b4752a3 100644
--- a/arch/riscv/usr/Makefile
+++ b/arch/riscv/user/basics/Makefile
diff --git a/arch/riscv/usr/basics.c b/arch/riscv/user/basics/basics.c
index 1d822c3..1d822c3 100644
--- a/arch/riscv/usr/basics.c
+++ b/arch/riscv/user/basics/basics.c
diff --git a/arch/riscv/usr/factorial.S b/arch/riscv/user/basics/factorial.S
index 7e3df12..7e3df12 100644
--- a/arch/riscv/usr/factorial.S
+++ b/arch/riscv/user/basics/factorial.S
diff --git a/arch/riscv/usr/float.S b/arch/riscv/user/basics/float.S
index f481f3e..f481f3e 100644
--- a/arch/riscv/usr/float.S
+++ b/arch/riscv/user/basics/float.S
diff --git a/arch/riscv/usr/string.S b/arch/riscv/user/basics/string.S
index 3878074..3878074 100644
--- a/arch/riscv/usr/string.S
+++ b/arch/riscv/user/basics/string.S
diff --git a/arch/riscv/linux/Makefile b/arch/riscv/user/hwprobe/Makefile
index 9b813ff..9b813ff 100644
--- a/arch/riscv/linux/Makefile
+++ b/arch/riscv/user/hwprobe/Makefile
diff --git a/arch/riscv/linux/probe.c b/arch/riscv/user/hwprobe/probe.c
index 9e2e978..9e2e978 100644
--- a/arch/riscv/linux/probe.c
+++ b/arch/riscv/user/hwprobe/probe.c