mb/lowrisc: Remove the Nexys4DDR port

This board doesn't support the newest RISC-V Privileged Architecture
spec (1.10), and it's based on an FPGA so it's a moving target.

Now that there's actual RISC-V silicon out there (from SiFive),
mb/lowrisc/nexys4ddr will only continue to bitrot.

Change-Id: I4e3e715106a1a94381a563dc4a56781c35883c2d
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/28706
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Hug <philipp@hug.cx>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

4 files changed, 0 insertions, 65 deletions

diff --git a/src/soc/lowrisc/Kconfig b/src/soc/lowrisc/Kconfig
deleted file mode 100644
index a514135297..0000000000
--- a/src/soc/lowrisc/Kconfig
+++ /dev/null
@@ -1,2 +0,0 @@
-# Load all chipsets
-source "src/soc/lowrisc/*/Kconfig"
diff --git a/src/soc/lowrisc/lowrisc/Kconfig b/src/soc/lowrisc/lowrisc/Kconfig
deleted file mode 100644
index 8b35231642..0000000000
--- a/src/soc/lowrisc/lowrisc/Kconfig
+++ /dev/null
@@ -1,29 +0,0 @@
-config SOC_LOWRISC_LOWRISC
-	select ARCH_RISCV
-	select ARCH_BOOTBLOCK_RISCV
-	select ARCH_VERSTAGE_RISCV
-	select ARCH_ROMSTAGE_RISCV
-	select ARCH_RAMSTAGE_RISCV
-	select BOOTBLOCK_CONSOLE
-	select DRIVERS_UART_8250MEM_32
-	select GENERIC_UDELAY
-	select HAVE_MONOTONIC_TIMER
-	select RISCV_USE_ARCH_TIMER
-	bool
-	default n
-
-if SOC_LOWRISC_LOWRISC
-
-config RISCV_ARCH
-	string
-	default "rv64imafd"
-
-config RISCV_ABI
-	string
-	default "lp64d"
-
-config RISCV_CODEMODEL
-	string
-	default "medany"
-
-endif
diff --git a/src/soc/lowrisc/lowrisc/Makefile.inc b/src/soc/lowrisc/lowrisc/Makefile.inc
deleted file mode 100644
index ccd9a16945..0000000000
--- a/src/soc/lowrisc/lowrisc/Makefile.inc
+++ /dev/null
@@ -1,8 +0,0 @@
-ifeq ($(CONFIG_SOC_LOWRISC_LOWRISC),y)
-
-bootblock-y += mtime.c
-romstage-y += cbmem.c
-ramstage-y += cbmem.c
-ramstage-y += mtime.c
-
-endif
diff --git a/src/soc/lowrisc/lowrisc/cbmem.c b/src/soc/lowrisc/lowrisc/cbmem.c
deleted file mode 100644
index a21266608b..0000000000
--- a/src/soc/lowrisc/lowrisc/cbmem.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <cbmem.h>
-
-void *cbmem_top(void)
-{
-	uintptr_t base;
-	size_t size;
-
-	/* FIXME: These values shouldn't necessarily be hardcoded */
-	base = 0x80000000;
-	size = 128 * MiB;
-
-	return (void *)(base + size);
-}