[coreboot-gerrit] New patch to review for coreboot: riscv: add the lowrisc System On Chip support
Ronald G. Minnich (rminnich@gmail.com)
gerrit at coreboot.org
Tue Oct 25 01:28:40 CEST 2016
Ronald G. Minnich (rminnich at gmail.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17119
-gerrit
commit d05278ca4b12f75149f8906e08f87df526f52b53
Author: Ronald G. Minnich <rminnich at gmail.com>
Date: Mon Oct 24 16:27:19 2016 -0700
riscv: add the lowrisc System On Chip support
Change-Id: I8d81b9cf280e724c935106c8f00692300094ad3f
Signed-off-by: Ronald G. Minnich <rminnich at gmail.com>
---
src/soc/lowrisc/lowrisc/Kconfig | 14 ++++++++++++++
src/soc/lowrisc/lowrisc/Makefile.inc | 6 ++++++
src/soc/lowrisc/lowrisc/cbmem.c | 23 +++++++++++++++++++++++
3 files changed, 43 insertions(+)
diff --git a/src/soc/lowrisc/lowrisc/Kconfig b/src/soc/lowrisc/lowrisc/Kconfig
new file mode 100644
index 0000000..528e744
--- /dev/null
+++ b/src/soc/lowrisc/lowrisc/Kconfig
@@ -0,0 +1,14 @@
+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
+ bool
+ default n
+
+if SOC_LOWRISC_LOWRISC
+
+endif
diff --git a/src/soc/lowrisc/lowrisc/Makefile.inc b/src/soc/lowrisc/lowrisc/Makefile.inc
new file mode 100644
index 0000000..343c909
--- /dev/null
+++ b/src/soc/lowrisc/lowrisc/Makefile.inc
@@ -0,0 +1,6 @@
+ifeq ($(CONFIG_SOC_LOWRISC_LOWRISC),y)
+
+romstage-y += cbmem.c
+ramstage-y += cbmem.c
+
+endif
diff --git a/src/soc/lowrisc/lowrisc/cbmem.c b/src/soc/lowrisc/lowrisc/cbmem.c
new file mode 100644
index 0000000..ea7ad70
--- /dev/null
+++ b/src/soc/lowrisc/lowrisc/cbmem.c
@@ -0,0 +1,23 @@
+/*
+ * 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 <console/console.h>
+#include <cbmem.h>
+
+void *cbmem_top(void)
+{
+ // TODO: find out how the lowrisc SOC decides to provide
+ // this information, when they know.
+ printk(BIOS_SPEW, "Returning hard-coded 128M; fix me\n");
+ return (void *)((uintptr_t)(2ULL*GiB+128*MiB));
+}
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