diff options
| author | Jayachandran C <jayachandranc@netlogicmicro.com> | 2012-07-13 16:23:22 (GMT) |
|---|---|---|
| committer | John Crispin <blogic@openwrt.org> | 2012-08-22 21:46:37 (GMT) |
| commit | 2f6528e15a4592c762a690c1320518368593ae75 (patch) | |
| tree | 6fd1aafd2586875f2905398a1e0ab8f5c571142a /arch/mips/netlogic | |
| parent | a9f16821205d7561bf9d622855e1aa95e5c77f0c (diff) | |
| download | linux-2f6528e15a4592c762a690c1320518368593ae75.tar.xz | |
MIPS: Netlogic: Add support for built in DTB
Provide a config option to embed a device tree for XLP evaluation
boards. This DTB will be used if the firmware does not pass in a
device tree pointer.
Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Patchwork: http://patchwork.linux-mips.org/patch/4103/
Signed-off-by: John Crispin <blogic@openwrt.org>
Diffstat (limited to 'arch/mips/netlogic')
| -rw-r--r-- | arch/mips/netlogic/Kconfig | 15 | ||||
| -rw-r--r-- | arch/mips/netlogic/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/netlogic/dts/Makefile | 4 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlp/setup.c | 12 |
4 files changed, 31 insertions, 1 deletions
diff --git a/arch/mips/netlogic/Kconfig b/arch/mips/netlogic/Kconfig index 75bec44..8059eb7 100644 --- a/arch/mips/netlogic/Kconfig +++ b/arch/mips/netlogic/Kconfig @@ -1,2 +1,17 @@ +if NLM_XLP_BOARD || NLM_XLR_BOARD + +if NLM_XLP_BOARD +config DT_XLP_EVP + bool "Built-in device tree for XLP EVP/SVP boards" + default y + help + Add an FDT blob for XLP EVP and SVP boards into the kernel. + This DTB will be used if the firmware does not pass in a DTB + pointer to the kernel. The corresponding DTS file is at + arch/mips/netlogic/dts/xlp_evp.dts +endif + config NLM_COMMON bool + +endif diff --git a/arch/mips/netlogic/Makefile b/arch/mips/netlogic/Makefile index 36d169b..7602d13 100644 --- a/arch/mips/netlogic/Makefile +++ b/arch/mips/netlogic/Makefile @@ -1,3 +1,4 @@ obj-$(CONFIG_NLM_COMMON) += common/ obj-$(CONFIG_CPU_XLR) += xlr/ obj-$(CONFIG_CPU_XLP) += xlp/ +obj-$(CONFIG_CPU_XLP) += dts/ diff --git a/arch/mips/netlogic/dts/Makefile b/arch/mips/netlogic/dts/Makefile new file mode 100644 index 0000000..67ae3fe2 --- /dev/null +++ b/arch/mips/netlogic/dts/Makefile @@ -0,0 +1,4 @@ +obj-$(CONFIG_DT_XLP_EVP) := xlp_evp.dtb.o + +$(obj)/%.dtb: $(obj)/%.dts + $(call if_changed,dtc) diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c index 0d2d679..d899709 100644 --- a/arch/mips/netlogic/xlp/setup.c +++ b/arch/mips/netlogic/xlp/setup.c @@ -57,6 +57,7 @@ unsigned long nlm_common_ebase = 0x0; /* default to uniprocessor */ uint32_t nlm_coremask = 1, nlm_cpumask = 1; int nlm_threads_per_core = 1; +extern u32 __dtb_start[]; static void nlm_linux_exit(void) { @@ -97,9 +98,18 @@ void __init prom_init(void) { void *fdtp; - fdtp = (void *)(long)fw_arg0; xlp_mmu_init(); nlm_hal_init(); + + /* + * If no FDT pointer is passed in, use the built-in FDT. + * device_tree_init() does not handle CKSEG0 pointers in + * 64-bit, so convert pointer. + */ + fdtp = (void *)(long)fw_arg0; + if (!fdtp) + fdtp = __dtb_start; + fdtp = phys_to_virt(__pa(fdtp)); early_init_devtree(fdtp); nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1)); |