boot/riscv-pk: add bootloader for RISC-V architecture

Add the RISC-V Proxy Kernel (pk) package which provides the Berkeley
Boot Loader for booting RISC-V kernel images.

Signed-off-by: Mark Corbin <[email protected]>
[Thomas:
 - fix prompt of option to be just "riscv-pk"
 - add blank line between help text and upstream URL in Config.in file
 - use $(INSTALL) instead of cp to install the generated image]
Signed-off-by: Thomas Petazzoni <[email protected]>

diff --git a/DEVELOPERS b/DEVELOPERS
index 199ad9248ec0071ef293bba13fdcc2ababef5c8f..056c3a143e14c997295af3d04a54e0454cf0dd30 100644 (file)
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1301,6 +1301,7 @@ F:        package/ratpoison/
 N:     Mark Corbin <[email protected]>
 F:     arch/arch.mk.riscv
 F:     arch/Config.in.riscv
+F:     boot/riscv-pk/
 
 N:     Markos Chandras <[email protected]>
 F:     package/harfbuzz/

diff --git a/boot/Config.in b/boot/Config.in
index 3687c41a2c00703d72c276ee625c5e7e565ff8e6..945168bf37dc9100ece197d14f4ee57f1f107f9b 100644 (file)
--- a/boot/Config.in
+++ b/boot/Config.in
@@ -13,6 +13,7 @@ source "boot/gummiboot/Config.in"
 source "boot/lpc32xxcdl/Config.in"
 source "boot/mv-ddr-marvell/Config.in"
 source "boot/mxs-bootlets/Config.in"
+source "boot/riscv-pk/Config.in"
 source "boot/s500-bootloader/Config.in"
 source "boot/syslinux/Config.in"
 source "boot/ts4800-mbrboot/Config.in"

diff --git a/boot/riscv-pk/Config.in b/boot/riscv-pk/Config.in
new file mode 100644 (file)
index 0000000..b4fe365
--- /dev/null
+++ b/boot/riscv-pk/Config.in
@@ -0,0 +1,14 @@
+comment "riscv-pk needs a Linux kernel to be built"
+       depends on BR2_riscv
+       depends on !BR2_LINUX_KERNEL
+
+config BR2_TARGET_RISCV_PK
+       bool "riscv-pk"
+       depends on BR2_riscv
+       depends on BR2_LINUX_KERNEL
+       help
+         The RISC-V Proxy Kernel (pk) package contains the Berkeley
+         Boot Loader (BBL) which has been designed to boot a Linux
+         kernel on a RISC-V processor.
+
+         https://github.com/riscv/riscv-pk.git

diff --git a/boot/riscv-pk/riscv-pk.mk b/boot/riscv-pk/riscv-pk.mk
new file mode 100644 (file)
index 0000000..0ab5879
--- /dev/null
+++ b/boot/riscv-pk/riscv-pk.mk
@@ -0,0 +1,32 @@
+################################################################################
+#
+# riscv-pk
+#
+################################################################################
+
+RISCV_PK_VERSION = 706cc77c369fd3e4734b5a6aa813d421347f1814
+RISCV_PK_SITE = git://github.com/riscv/riscv-pk.git
+RISCV_PK_LICENSE = BSD-3-Clause
+RISCV_PK_LICENSE_FILES = LICENSE
+RISCV_PK_DEPENDENCIES = linux
+RISCV_PK_SUBDIR = build
+RISCV_PK_INSTALL_IMAGES = YES
+
+define RISCV_PK_CONFIGURE_CMDS
+       mkdir -p $(@D)/build
+       (cd $(@D)/build; \
+               $(TARGET_CONFIGURE_OPTS) ../configure \
+               --host=$(GNU_TARGET_NAME) \
+               --with-payload=$(BINARIES_DIR)/vmlinux \
+       )
+endef
+
+define RISCV_PK_BUILD_CMDS
+       $(TARGET_MAKE_ENV) $(MAKE) -C $(@D)/build bbl
+endef
+
+define RISCV_PK_INSTALL_IMAGES_CMDS
+       $(INSTALL) -D -m 0755 $(@D)/build/bbl $(BINARIES_DIR)/bbl
+endef
+
+$(eval $(generic-package))