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freebsd-skq/sys/arm/include/machdep.h

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Import FreeBSD/arm kernel bits. It only supports sa1110 (on simics) right now, but xscale support should come soon. Some of the initial work has been provided by : Stephane Potvin <sepotvin at videotron.ca> Most of this comes from NetBSD.
2004-05-14 11:46:45 +00:00
/* $NetBSD: machdep.h,v 1.7 2002/02/21 02:52:21 thorpej Exp $ */
/* $FreeBSD$ */
#ifndef _MACHDEP_BOOT_MACHDEP_H_
#define _MACHDEP_BOOT_MACHDEP_H_
Create a common set_stackptrs in sys/arm/machdep.c. On single core devices set_stackptrs is only ever called with cpu = 0 in initarm and will be identical to the existing function. On SMP this needs to be implemented for sys/arm/mp_machdep.c, but the implementations are identical for each SoC.
2012-09-22 06:41:56 +00:00
/* Structs that need to be initialised by initarm */
ARM: remove old pmap-v6 code. The new pmap-v6 is mature enough, and dual implementation is showstopper for major cleanup. This patch only removes old code from tree. Cleanups will follow asap.
2016-01-29 10:31:54 +00:00
#if __ARM_ARCH >= 6
New pmap code for armv6. Disabled by default, option ARM_NEW_PMAP enables it. This is pretty much a complete rewrite based on the existing i386 code. The patches have been circulating for a couple years and have been looked at by plenty of people, but I'm not putting anybody on the hook as having reviewed this in any formal sense except myself. After this has gotten wider testing from the user community, ARM_NEW_PMAP will become the default and various dregs of the old pmap code will be removed. Submitted by: Svatopluk Kraus <onwahe@gmail.com>, Michal Meloun <meloun@miracle.cz>
2015-03-26 21:13:53 +00:00
extern vm_offset_t irqstack;
extern vm_offset_t undstack;
extern vm_offset_t abtstack;
#else
Add a couple forward declarations, so that board support routines don't have to pre-include a bunch of header files they don't need just to use this one.
2013-03-29 18:43:10 +00:00
struct pv_addr;
Create a common set_stackptrs in sys/arm/machdep.c. On single core devices set_stackptrs is only ever called with cpu = 0 in initarm and will be identical to the existing function. On SMP this needs to be implemented for sys/arm/mp_machdep.c, but the implementations are identical for each SoC.
2012-09-22 06:41:56 +00:00
extern struct pv_addr irqstack;
extern struct pv_addr undstack;
extern struct pv_addr abtstack;
New pmap code for armv6. Disabled by default, option ARM_NEW_PMAP enables it. This is pretty much a complete rewrite based on the existing i386 code. The patches have been circulating for a couple years and have been looked at by plenty of people, but I'm not putting anybody on the hook as having reviewed this in any formal sense except myself. After this has gotten wider testing from the user community, ARM_NEW_PMAP will become the default and various dregs of the old pmap code will be removed. Submitted by: Svatopluk Kraus <onwahe@gmail.com>, Michal Meloun <meloun@miracle.cz>
2015-03-26 21:13:53 +00:00
#endif
Create a common set_stackptrs in sys/arm/machdep.c. On single core devices set_stackptrs is only ever called with cpu = 0 in initarm and will be identical to the existing function. On SMP this needs to be implemented for sys/arm/mp_machdep.c, but the implementations are identical for each SoC.
2012-09-22 06:41:56 +00:00
/* Define various stack sizes in pages */
#define IRQ_STACK_SIZE 1
#define ABT_STACK_SIZE 1
#define UND_STACK_SIZE 1
Import FreeBSD/arm kernel bits. It only supports sa1110 (on simics) right now, but xscale support should come soon. Some of the initial work has been provided by : Stephane Potvin <sepotvin at videotron.ca> Most of this comes from NetBSD.
2004-05-14 11:46:45 +00:00
/* misc prototypes used by the many arm machdeps */
Add a couple forward declarations, so that board support routines don't have to pre-include a bunch of header files they don't need just to use this one.
2013-03-29 18:43:10 +00:00
struct trapframe;
Instead of using sysarch() to store-retrieve the tp, add a magic address, ARM_TP_ADDRESS, where the tp will be stored. On CPUs that support it, a cache line will be allocated and locked for this address, so that it will never go to RAM. On CPUs that does not, a page is allocated for it (it will be a bit slower, and is wrong for SMP, but should be fine for UP). The tp is still stored in the mdthread struct, and at each context switch, ARM_TP_ADDRESS gets updated. Suggested by: davidxu
2005-02-26 18:59:01 +00:00
void arm_lock_cache_line(vm_offset_t);
Pull out the common code to initialise proc0 & thread0 from initarm to a common function. Reviewed by: imp
2012-06-10 01:13:04 +00:00
void init_proc0(vm_offset_t kstack);
Take the first baby step towards unifying and cleaning up arminit(): - Pull all the code to deal with the trampoline stuff into one centeralized place and use it from everywhere. - Some minor style tidiness Reviewed by: tinguely
2008-04-03 16:44:50 +00:00
void halt(void);
For data and instruction prefetch aborts, call the same handler in the C code, passing a 0/1 flag that indicates which type of abort it was. This sets the stage for unifying the handling of page faults in a single routine. Submitted by: Svatopluk Kraus <onwahe@gmail.com>, Michal Meloun <meloun@miracle.cz
2014-12-25 17:06:58 +00:00
void abort_handler(struct trapframe *, int );
Create a common set_stackptrs in sys/arm/machdep.c. On single core devices set_stackptrs is only ever called with cpu = 0 in initarm and will be identical to the existing function. On SMP this needs to be implemented for sys/arm/mp_machdep.c, but the implementations are identical for each SoC.
2012-09-22 06:41:56 +00:00
void set_stackptrs(int cpu);
Add a couple forward declarations, so that board support routines don't have to pre-include a bunch of header files they don't need just to use this one.
2013-03-29 18:43:10 +00:00
void undefinedinstruction_bounce(struct trapframe *);
More Linux boot support. Create arm_dump_avail_init() to initialize this array either from Linux boot data, when enabled, or in the typical way that most ports do it. arm_pyhs_avail_init is coming soon since it must be a separate function.
2012-06-14 04:18:56 +00:00
/* Early boot related helper functions */
Modify all the arm platform files to call parse_boot_param passing in the boot parameters from initarm first thing. parse_boot_param parses the boot arguments and converts them to the /boot/loader metadata the rest of the kernel uses. parse_boot_param is a weak alias to fake_preload_metadata, which all the platforms use now, but may become more extensive in the future. Since it is a weak symbol, specific boards may define their own parse_boot_param to interface to custom boot loaders. Reviewed by: cognet@, Ian Lapore
2012-06-14 04:00:30 +00:00
struct arm_boot_params;
Create default_parse_boot_param which, if FreeBSD /boot/loader support is enabled, sets values based on the metadata passed in. Otherwise fake_preload_metadata is called. Change the default parse_boot_param to default_parse_boot_param. Enable this functionality only on the mv platform, which is where most of the code is from. Reviewed by: cognet, Ian Lapore
2012-06-14 04:09:20 +00:00
vm_offset_t default_parse_boot_param(struct arm_boot_params *abp);
Add support for parsing Linux ATAGs such as you'd see from uboot or redboot. Support is very preiminary and likely needs some work. Also, do some minor code shuffling of the FreeBSD /boot/loader metadata parsing code. This code is preliminary and should be used with caution.
2012-06-14 04:16:16 +00:00
vm_offset_t freebsd_parse_boot_param(struct arm_boot_params *abp);
vm_offset_t linux_parse_boot_param(struct arm_boot_params *abp);
ARM: Teach LINUX_BOOT_ABI to recognize DT blob. This allow us to boot FreeBSD kernel (using uImage encapsulation) directly from U-boot using 'bootm' command or by Android fastboot loader. For now, kernel uImage must be marked as Linux, but we can add support for FreeBSD into U-Boot later.
2016-03-26 06:55:55 +00:00
vm_offset_t fake_preload_metadata(struct arm_boot_params *abp,
void *dtb_ptr, size_t dtb_size);
Create default_parse_boot_param which, if FreeBSD /boot/loader support is enabled, sets values based on the metadata passed in. Otherwise fake_preload_metadata is called. Change the default parse_boot_param to default_parse_boot_param. Enable this functionality only on the mv platform, which is where most of the code is from. Reviewed by: cognet, Ian Lapore
2012-06-14 04:09:20 +00:00
vm_offset_t parse_boot_param(struct arm_boot_params *abp);
Replace many pasted identical definitions of cpu_initclocks() with a common implementation in arm/machdep.c. Most arm platforms either don't need to do anything, or just need to call the standard eventtimer init routines. A generic implementation that does that is now provided via weak linkage. Any platform that needs to do something different can provide a its own implementation to override the generic one.
2014-02-26 22:06:10 +00:00
void arm_generic_initclocks(void);
Modify all the arm platform files to call parse_boot_param passing in the boot parameters from initarm first thing. parse_boot_param parses the boot arguments and converts them to the /boot/loader metadata the rest of the kernel uses. parse_boot_param is a weak alias to fake_preload_metadata, which all the platforms use now, but may become more extensive in the future. Since it is a weak symbol, specific boards may define their own parse_boot_param to interface to custom boot loaders. Reviewed by: cognet@, Ian Lapore
2012-06-14 04:00:30 +00:00
Add hw.board.serial and hw.board.revision for exporting board-specific info
2013-01-05 23:08:10 +00:00
/* Board-specific attributes */
void board_set_serial(uint64_t);
void board_set_revision(uint32_t);
Add support for branch instruction on armv7 with ptrace single step Previous code supported only "continuous" code without any kind of branch instructions. To change that, new function was implemented which parses current instruction and returns an addres where the jump might happen (alternative addr). mdthread structure was extended to support two breakpoints (one directly below current instruction and the second placed at the alternative location). One of them must trigger regardless the instruction has or has not been executed due to condition field. Upon cleanup, both software breakpoints are removed. This implementation parses only the most common instructions that are present in the code (like 99.99% of all), but there is a chance there are some left, not covered by the parsing routine. Parsing is done only for 32-bit instruction, no Thumb nor Thumb-2 support is provided. Reviewed by: kib Submitted by: Wojciech Macek <wma@semihalf.com> Obtained from: Semihalf Sponsored by: Juniper Networks Inc. Differential Revision: https://reviews.freebsd.org/D4021
2015-11-02 16:56:34 +00:00
int arm_predict_branch(void *, u_int, register_t, register_t *,
u_int (*)(void*, int), u_int (*)(void*, vm_offset_t, u_int*));
Add a MULTIDELAY option to allow the ARM kernel to have multiple DELAY implementations. Early in the boot the kernel will use an approximate, however after the timer has been probed it will switch to a more accurate implementation. Reviewed by: manu Sponsored by: ABT Systems Ltd Differential Revision: https://reviews.freebsd.org/D5762
2016-04-30 17:27:33 +00:00
#ifdef MULTIDELAY
typedef void delay_func(int, void *);
void arm_set_delay(delay_func *, void *);
#endif
Import FreeBSD/arm kernel bits. It only supports sa1110 (on simics) right now, but xscale support should come soon. Some of the initial work has been provided by : Stephane Potvin <sepotvin at videotron.ca> Most of this comes from NetBSD.
2004-05-14 11:46:45 +00:00
#endif /* !_MACHINE_MACHDEP_H_ */
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