forked from Minki/linux
b9ab12797e
The Davinci cpu_is_davinci_*() macros use the SoC part number and variant retrieved from the JTAG ID register to determine the type of cpu that the kernel is running on. Currently, the code to read the JTAG ID register assumes that the register is always at the same base address. This isn't true on some newer SoCs. To solve this, have the SoC-specific code set the JTAG ID register base address in soc_info structure and add a 'cpu_id' member to it. 'cpu_id' will be used by the cpu_is_davinci_*() macros to match the cpu id. Also move the info used to identify the cpu type into the SoC-specific code to keep all SoC-specific code together. The common code will read the JTAG ID register, search through an array of davinci_id structures to identify the cpu type. Once identified, it will set the 'cpu_id' member of the soc_info structure to the proper value and the cpu_is_davinci_*() macros will now work. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
|
|
* Header for code common to all DaVinci machines.
|
|
*
|
|
* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
|
|
*
|
|
* 2007 (c) MontaVista Software, Inc. This file is licensed under
|
|
* the terms of the GNU General Public License version 2. This program
|
|
* is licensed "as is" without any warranty of any kind, whether express
|
|
* or implied.
|
|
*/
|
|
|
|
#ifndef __ARCH_ARM_MACH_DAVINCI_COMMON_H
|
|
#define __ARCH_ARM_MACH_DAVINCI_COMMON_H
|
|
|
|
struct sys_timer;
|
|
|
|
extern struct sys_timer davinci_timer;
|
|
|
|
extern void davinci_irq_init(void);
|
|
|
|
/* parameters describe VBUS sourcing for host mode */
|
|
extern void setup_usb(unsigned mA, unsigned potpgt_msec);
|
|
|
|
/* parameters describe VBUS sourcing for host mode */
|
|
extern void setup_usb(unsigned mA, unsigned potpgt_msec);
|
|
|
|
/* SoC specific init support */
|
|
struct davinci_soc_info {
|
|
struct map_desc *io_desc;
|
|
unsigned long io_desc_num;
|
|
u32 cpu_id;
|
|
u32 jtag_id;
|
|
void __iomem *jtag_id_base;
|
|
struct davinci_id *ids;
|
|
unsigned long ids_num;
|
|
};
|
|
|
|
extern struct davinci_soc_info davinci_soc_info;
|
|
|
|
extern void davinci_common_init(struct davinci_soc_info *soc_info);
|
|
|
|
#endif /* __ARCH_ARM_MACH_DAVINCI_COMMON_H */
|