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authorRonald G. Minnich <rminnich@gmail.com>2016-10-24 16:27:19 -0700
committerRonald G. Minnich <rminnich@gmail.com>2016-10-25 22:31:06 +0200
commit5817a1555754709da92cae7f254d540e2b488cec (patch)
tree4532053e80cb462f0d5a9493ae8c08c93a1470dc /src/soc
parent64e341ec1654645b77c9ec158b01fb992a44b882 (diff)
riscv: add the lowrisc System On Chip support
Change-Id: I8d81b9cf280e724c935106c8f00692300094ad3f Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: https://review.coreboot.org/17119 Tested-by: build bot (Jenkins) Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Diffstat (limited to 'src/soc')
-rw-r--r--src/soc/lowrisc/lowrisc/Kconfig14
-rw-r--r--src/soc/lowrisc/lowrisc/Makefile.inc6
-rw-r--r--src/soc/lowrisc/lowrisc/cbmem.c23
3 files changed, 43 insertions, 0 deletions
diff --git a/src/soc/lowrisc/lowrisc/Kconfig b/src/soc/lowrisc/lowrisc/Kconfig
new file mode 100644
index 0000000000..528e7444f7
--- /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 0000000000..343c909377
--- /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 0000000000..ea7ad7027c
--- /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));
+}