arch/{arm,ppc64,riscv}: Remove cpu_info

The structure and function are not currently used or implemented. x86 is
the only arch that currently implements it. It is currently used for
COOP_MULTITASKING and mp_init.

Keeping around the unused definitions leads to confusion.

BUG=b:179699789
TEST=none

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I0775ef03168f7f9c41b1b05cb8f12724d0458ba5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56572
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 0 insertions, 19 deletions

diff --git a/src/arch/arm/cpu.c b/src/arch/arm/cpu.c
deleted file mode 100644
index 75816d3fc0..0000000000
--- a/src/arch/arm/cpu.c
+++ /dev/null
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause */
-
-#include <arch/cpu.h>
-#include <commonlib/helpers.h>
-
-/* Return the CPU struct which is at the high memory address of the stack.
- */
-struct cpu_info *cpu_info(void)
-{
-#error "This is BROKEN! ARM stacks are currently not guaranteed to be " \
-	"STACK_SIZE-aligned in any way. If you ever plan to revive this " \
-	"feature, make sure you add the proper assertions " \
-	"(and maybe consider revising the whole thing to work closer to what " \
-	"arm64 is doing now)."
-	uintptr_t addr = ALIGN_UP((uintptr_t)__builtin_frame_address(0),
-		CONFIG_STACK_SIZE);
-	addr -= sizeof(struct cpu_info);
-	return (void *)addr;
-}