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Move away drivers from generic base-repository

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Driver definitions which are used by kernel/core in base-hw, and also by other
drivers (e.g. from the os repository) have to reside in the generic
base-repository, for instance some uart drivers. All drivers which are
interesting for one of the sites only (sp804 for timer driver, or
cortex_a9 cpu driver for base-hw) should reside in the respective repos.

Factorize cpu context out of Cortex A9 specific definitions. Moreover, there
is already a Cpu_state object containing all common ARM registers. We use
this as a base for the cpu context switching done by the base-hw kernel.
The Cpu_state class get extended by a cpu-exception field, that stores the kind
of exception raised when the corresponding context got interrupted. This
information is used not only by the base-hw kernel, but also by the TrustZone
VMM that is build currently.
This commit is contained in:
Stefan Kalkowski
2012-10-01 12:59:52 +02:00
parent f2d81a8d62
commit 94ea3a0acb
14 changed files with 121 additions and 107 deletions
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53
base/include/arm/cpu/cpu_state.h
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@ -21,11 +21,54 @@ namespace Genode {
struct Cpu_state
{
addr_t ip;
addr_t sp;
addr_t r[13];
addr_t lr;
addr_t cpsr;
/**
* Native exception types
*/
enum Cpu_exception {
RESET = 1,
UNDEFINED_INSTRUCTION = 2,
SUPERVISOR_CALL = 3,
PREFETCH_ABORT = 4,
DATA_ABORT = 5,
INTERRUPT_REQUEST = 6,
FAST_INTERRUPT_REQUEST = 7,
MAX_CPU_EXCEPTION = FAST_INTERRUPT_REQUEST,
};
enum { MAX_GPR = 13 };
addr_t r[MAX_GPR]; /* r0-r12 - general purpose */
addr_t sp; /* r13 - stack pointer */
addr_t lr; /* r14 - link register */
addr_t ip; /* r15 - instruction pointer */
addr_t cpsr; /* current program status register */
Cpu_exception cpu_exception; /* last exception */
};
struct Cpu_state_modes : Cpu_state
{
/**
* Common banked registers for exception modes
*/
struct Mode_state {
enum Mode {
UND, /* Undefined */
SVC, /* Supervisor */
ABORT, /* Abort */
IRQ, /* Interrupt */
FIQ, /* Fast Interrupt */
MAX
};
uint32_t sp; /* banked stack pointer */
uint32_t lr; /* banked link register */
uint32_t spsr; /* saved program status register */
};
Mode_state mode[Mode_state::MAX]; /* exception mode registers */
uint32_t fiq_r[5]; /* fast-interrupt mode r8-r12 */
};
}