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authorUros Majstorovic <majstor@majstor.org>2022-09-04 18:09:35 +0200
committerUros Majstorovic <majstor@majstor.org>2022-09-04 18:09:35 +0200
commit92e6731824cf4286136cb343d538aae4f772fe13 (patch)
tree21c12cfbb98f065e1a3fdf527250d178758948df /fw/fe310/bsp/metal
parent4db0527c16502103e04c4091dbd803c55538b52f (diff)
upload script fixed for jlink
Diffstat (limited to 'fw/fe310/bsp/metal')
-rw-r--r--fw/fe310/bsp/metal/Makefile13
-rw-r--r--fw/fe310/bsp/metal/entry.S106
-rw-r--r--fw/fe310/bsp/metal/metal.c25
3 files changed, 0 insertions, 144 deletions
diff --git a/fw/fe310/bsp/metal/Makefile b/fw/fe310/bsp/metal/Makefile
deleted file mode 100644
index 962d3bc..0000000
--- a/fw/fe310/bsp/metal/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-include ../../common.mk
-CFLAGS += -I$(bsp_dir)/include -I$(bsp_dir)/drivers
-
-%.o: %.c
- $(CC) $(CFLAGS) -c $<
-
-%.o: %.S
- $(CC) $(CFLAGS) -c $<
-
-all: entry.o metal.o
-
-clean:
- rm -f *.o
diff --git a/fw/fe310/bsp/metal/entry.S b/fw/fe310/bsp/metal/entry.S
deleted file mode 100644
index 97da3fd..0000000
--- a/fw/fe310/bsp/metal/entry.S
+++ /dev/null
@@ -1,106 +0,0 @@
-/* Copyright 2018 SiFive, Inc */
-/* SPDX-License-Identifier: Apache-2.0 */
-
-/* This code executes before _start, which is contained inside the C library.
- * In embedded systems we want to ensure that _enter, which contains the first
- * code to be executed, can be loaded at a specific address. To enable this
- * feature we provide the '.text.metal.init.enter' section, which is
- * defined to have the first address being where execution should start. */
-.section .text.metal.init.enter
-.global _enter
-_enter:
- .cfi_startproc
-
- /* Inform the debugger that there is nowhere to backtrace past _enter. */
- .cfi_undefined ra
-
- /* The absolute first thing that must happen is configuring the global
- * pointer register, which must be done with relaxation disabled because
- * it's not valid to obtain the address of any symbol without GP
- * configured. The C environment might go ahead and do this again, but
- * that's safe as it's a fixed register. */
-.option push
-.option norelax
- la gp, __global_pointer$
-.option pop
-
- /* Set up a simple trap vector to catch anything that goes wrong early in
- * the boot process. */
- la t0, early_trap_vector
- csrw mtvec, t0
- /* enable chicken bit if core is bullet series*/
- la t0, __metal_chicken_bit
- beqz t0, 1f
- csrwi 0x7C1, 0
-1:
-
- /* There may be pre-initialization routines inside the MBI code that run in
- * C, so here we set up a C environment. First we set up a stack pointer,
- * which is left as a weak reference in order to allow initialization
- * routines that do not need a stack to be set up to transparently be
- * called. */
- .weak __metal_stack_pointer
- la sp, __metal_stack_pointer
-
- /* Check for an initialization routine and call it if one exists, otherwise
- * just skip over the call entirely. Note that __metal_initialize isn't
- * actually a full C function, as it doesn't end up with the .bss or .data
- * segments having been initialized. This is done to avoid putting a
- * burden on systems that can be initialized without having a C environment
- * set up. */
- .weak __metal_before_start
- la ra, __metal_before_start
- beqz ra, 1f
- jalr ra
-1:
-
- /* At this point we can enter the C runtime's startup file. The arguments
- * to this function are designed to match those provided to the SEE, just
- * so we don't have to write another ABI. */
- csrr a0, mhartid
- li a1, 0
- li a2, 0
- call _start
-
- /* If we've made it back here then there's probably something wrong. We
- * allow the METAL to register a handler here. */
- .weak __metal_after_main
- la ra, __metal_after_main
- beqz ra, 1f
- jalr ra
-1:
-
- /* If that handler returns then there's not a whole lot we can do. Just
- * try to make some noise. */
- la t0, 1f
- csrw mtvec, t0
-1:
- lw t1, 0(x0)
- j 1b
-
- .cfi_endproc
-
-/* For sanity's sake we set up an early trap vector that just does nothing. If
- * you end up here then there's a bug in the early boot code somewhere. */
-.section .text.metal.init.trapvec
-.align 2
-early_trap_vector:
- .cfi_startproc
- csrr t0, mcause
- csrr t1, mepc
- csrr t2, mtval
- j early_trap_vector
- .cfi_endproc
-
-/* The GCC port might not emit a __register_frame_info symbol, which eventually
- * results in a weak undefined reference that eventually causes crash when it
- * is dereference early in boot. We really shouldn't need to put this here,
- * but to deal with what I think is probably a bug in the linker script I'm
- * going to leave this in for now. At least it's fairly cheap :) */
-.weak __register_frame_info
-.global __register_frame_info
-.section .text.metal.init.__register_frame_info
-__register_frame_info:
- .cfi_startproc
- ret
- .cfi_endproc
diff --git a/fw/fe310/bsp/metal/metal.c b/fw/fe310/bsp/metal/metal.c
deleted file mode 100644
index 9e1bb3f..0000000
--- a/fw/fe310/bsp/metal/metal.c
+++ /dev/null
@@ -1,25 +0,0 @@
-#include <sys/cdefs.h>
-
-#include "encoding.h"
-#include "platform.h"
-#include "prci_driver.h"
-
-extern void eos_trap_entry();
-
-__attribute__((constructor))
-void metal_init(void) {
- SPI0_REG(SPI_REG_SCKDIV) = 8;
-
- PRCI_use_default_clocks();
- PRCI_use_pll(PLL_REFSEL_HFXOSC, 0, 1, 31, 1, -1, -1, -1);
-
- write_csr(mtvec, &eos_trap_entry);
- if (read_csr(misa) & (1 << ('F' - 'A'))) { // if F extension is present
- write_csr(mstatus, MSTATUS_FS); // allow FPU instructions without trapping
- write_csr(fcsr, 0); // initialize rounding mode, undefined at reset
- }
-}
-
-__attribute__((section(".init")))
-void __metal_synchronize_harts() {
-}