From 05e342554e51767830d7e60f2dab09192fd2a0e1 Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Fri, 29 Jan 2016 13:54:52 +0000 Subject: MIPS: Support dynamic I/O port base address The existing mips_io_port_base variable isn't suitable for use early during boot since it will be stored in the .data section which may not be writable pre-relocation. Fix this by moving the I/O port base address into struct arch_global_data. In order to avoid adding this field for all targets, make this dependant upon a new Kconfig entry CONFIG_DYNAMIC_IO_PORT_BASE. Malta is the only board which sets a non-zero I/O port base, so select this option only for Malta. Signed-off-by: Paul Burton --- arch/mips/include/asm/global_data.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/mips/include/asm/global_data.h') diff --git a/arch/mips/include/asm/global_data.h b/arch/mips/include/asm/global_data.h index 2d9a0c9e75d..a1ca257db59 100644 --- a/arch/mips/include/asm/global_data.h +++ b/arch/mips/include/asm/global_data.h @@ -12,6 +12,9 @@ /* Architecture-specific global data */ struct arch_global_data { +#ifdef CONFIG_DYNAMIC_IO_PORT_BASE + unsigned long io_port_base; +#endif #ifdef CONFIG_JZSOC /* There are other clocks in the jz4740 */ unsigned long per_clk; /* Peripheral bus clock */ -- cgit v1.2.3