drivers: of: add support for custom reserved memory drivers

Add support for custom reserved memory drivers. Call their init() function
for each reserved region and prepare for using operations provided by them
with by the reserved_mem->ops array.

Based on previous code provided by Josh Cartwright <joshc@codeaurora.org>

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index bc2121fa9132..f10f64fcc815 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -167,6 +167,16 @@
 #define CLK_OF_TABLES()
 #endif
 
+#ifdef CONFIG_OF_RESERVED_MEM
+#define RESERVEDMEM_OF_TABLES()                         \
+        . = ALIGN(8);                                   \
+        VMLINUX_SYMBOL(__reservedmem_of_table) = .;     \
+        *(__reservedmem_of_table)                       \
+        *(__reservedmem_of_table_end)
+#else
+#define RESERVEDMEM_OF_TABLES()
+#endif
+
 #define KERNEL_DTB()                                                    \
         STRUCT_ALIGN();                                                 \
         VMLINUX_SYMBOL(__dtb_start) = .;                                \
@@ -490,6 +500,7 @@
         TRACE_SYSCALLS()                                                \
         MEM_DISCARD(init.rodata)                                        \
         CLK_OF_TABLES()                                                 \
+        RESERVEDMEM_OF_TABLES()                                         \
         CLKSRC_OF_TABLES()                                              \
         KERNEL_DTB()                                                    \
         IRQCHIP_OF_MATCH_TABLE()