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Commit 0372c1ab authored by Chris Zankel's avatar Chris Zankel
Browse files

Merge tag 'xtensa-for-next-20150304' of git://github.com/jcmvbkbc/linux-xtensa into for_next 

Xtensa fixes for 4.0:

- make xtfpgs LCD driver functional and configurable. This fixes hardware
  lockup on KC705/ML605 boot;
- wire bpf and execveat syscalls;
- provide __NR_sync_file_range2 instead of __NR_sync_file_range, as that's
  what xtensa uses.
parents 40aad098 01e84c70

arch/xtensa/Kconfig

+30 −0
Original line number Diff line number Diff line
@@ -428,6 +428,36 @@ config DEFAULT_MEM_SIZE 


	  If unsure, leave the default value here.



config XTFPGA_LCD

	bool "Enable XTFPGA LCD driver"

	depends on XTENSA_PLATFORM_XTFPGA

	default n

	help

	  There's a 2x16 LCD on most of XTFPGA boards, kernel may output

	  progress messages there during bootup/shutdown. It may be useful

	  during board bringup.



	  If unsure, say N.



config XTFPGA_LCD_BASE_ADDR

	hex "XTFPGA LCD base address"

	depends on XTFPGA_LCD

	default "0x0d0c0000"

	help

	  Base address of the LCD controller inside KIO region.

	  Different boards from XTFPGA family have LCD controller at different

	  addresses. Please consult prototyping user guide for your board for

	  the correct address. Wrong address here may lead to hardware lockup.



config XTFPGA_LCD_8BIT_ACCESS

	bool "Use 8-bit access to XTFPGA LCD"

	depends on XTFPGA_LCD

	default n

	help

	  LCD may be connected with 4- or 8-bit interface, 8-bit access may

	  only be used with 8-bit interface. Please consult prototyping user

	  guide for your board for the correct interface width.



endmenu



menu "Executable file formats"

arch/xtensa/include/uapi/asm/unistd.h

+6 −2
Original line number Diff line number Diff line
@@ -715,7 +715,7 @@ __SYSCALL(323, sys_process_vm_writev, 6) 
__SYSCALL(324, sys_name_to_handle_at, 5)

#define __NR_open_by_handle_at			325

__SYSCALL(325, sys_open_by_handle_at, 3)

#define __NR_sync_file_range			326

#define __NR_sync_file_range2			326

__SYSCALL(326, sys_sync_file_range2, 6)

#define __NR_perf_event_open			327

__SYSCALL(327, sys_perf_event_open, 5)
@@ -749,8 +749,12 @@ __SYSCALL(337, sys_seccomp, 3) 
__SYSCALL(338, sys_getrandom, 3)

#define __NR_memfd_create			339

__SYSCALL(339, sys_memfd_create, 2)

#define __NR_bpf				340

__SYSCALL(340, sys_bpf, 3)

#define __NR_execveat				341

__SYSCALL(341, sys_execveat, 5)



#define __NR_syscall_count			340

#define __NR_syscall_count			342



/*

 * sysxtensa syscall handler

arch/xtensa/platforms/xtfpga/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -6,4 +6,5 @@ 
#

# Note 2! The CFLAGS definitions are in the main makefile...



obj-y			= setup.o lcd.o
 
obj-y			+= setup.o

obj-$(CONFIG_XTFPGA_LCD) += lcd.o

arch/xtensa/platforms/xtfpga/include/platform/hardware.h

+0 −3
Original line number Diff line number Diff line
@@ -40,9 +40,6 @@ 


/* UART */

#define DUART16552_PADDR	(XCHAL_KIO_PADDR + 0x0D050020)

/* LCD instruction and data addresses. */

#define LCD_INSTR_ADDR		((char *)IOADDR(0x0D040000))

#define LCD_DATA_ADDR		((char *)IOADDR(0x0D040004))



/* Misc. */

#define XTFPGA_FPGAREGS_VADDR	IOADDR(0x0D020000)

arch/xtensa/platforms/xtfpga/include/platform/lcd.h

+15 −0
Original line number Diff line number Diff line
@@ -11,10 +11,25 @@ 
#ifndef __XTENSA_XTAVNET_LCD_H

#define __XTENSA_XTAVNET_LCD_H



#ifdef CONFIG_XTFPGA_LCD

/* Display string STR at position POS on the LCD. */

void lcd_disp_at_pos(char *str, unsigned char pos);



/* Shift the contents of the LCD display left or right. */

void lcd_shiftleft(void);

void lcd_shiftright(void);

#else

static inline void lcd_disp_at_pos(char *str, unsigned char pos)

{

}



static inline void lcd_shiftleft(void)

{

}



static inline void lcd_shiftright(void)

{

}

#endif



#endif