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xlat v2: Make setup_mmu_config public

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This allows other parts of the code to reuse it. No functional changes.

Change-Id: Ib052ae235c422d9179958bd3016c3e678779ae9b
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
This commit is contained in:
Antonio Nino Diaz 2018-07-15 16:42:01 +01:00
parent 6563c0beb8
commit 63ddbae365
6 changed files with 42 additions and 32 deletions

18
include/lib/xlat_tables/xlat_mmu_helpers.h
View file

@ -41,10 +41,28 @@
*/
#define XLAT_TABLE_NC (U(1) << 1)
/*
* Offsets into a mmu_cfg_params array generated by setup_mmu_cfg(). All
* parameters are 64 bits wide.
*/
#define MMU_CFG_MAIR 0
#define MMU_CFG_TCR 1
#define MMU_CFG_TTBR0 2
#define MMU_CFG_PARAM_MAX 3
#ifndef __ASSEMBLY__
#include <sys/types.h>
/*
* Return the values that the MMU configuration registers must contain for the
* specified translation context. `params` must be a pointer to array of size
* MMU_CFG_PARAM_MAX.
*/
void setup_mmu_cfg(uint64_t *params, unsigned int flags,
const uint64_t *base_table, unsigned long long max_pa,
uintptr_t max_va, int xlat_regime);
#ifdef AARCH32
/* AArch32 specific translation table API */
void enable_mmu_secure(unsigned int flags);

9
include/lib/xlat_tables/xlat_tables_v2_helpers.h
View file

@ -16,12 +16,6 @@
#error "Do not include this header file directly. Include xlat_tables_v2.h instead."
#endif
/* Offsets into mmu_cfg_params array. All parameters are 64 bits wide. */
#define MMU_CFG_MAIR 0
#define MMU_CFG_TCR 1
#define MMU_CFG_TTBR0 2
#define MMU_CFG_PARAM_MAX 3
#ifndef __ASSEMBLY__
#include <cassert.h>
@ -30,9 +24,6 @@
#include <xlat_tables_arch.h>
#include <xlat_tables_defs.h>
/* Parameters of register values required when enabling MMU */
extern uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX];
/* Forward declaration */
struct mmap_region;

14
lib/xlat_tables_v2/aarch32/xlat_tables_arch.c
View file

@ -18,8 +18,6 @@
#error ARMv7 target does not support LPAE MMU descriptors
#endif
uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX];
/*
* Returns 1 if the provided granule size is supported, 0 otherwise.
*/
@ -109,9 +107,9 @@ int xlat_arch_current_el(void)
* Function for enabling the MMU in Secure PL1, assuming that the page tables
* have already been created.
******************************************************************************/
void setup_mmu_cfg(unsigned int flags, const uint64_t *base_table,
unsigned long long max_pa, uintptr_t max_va,
__unused int xlat_regime)
void setup_mmu_cfg(uint64_t *params, unsigned int flags,
const uint64_t *base_table, unsigned long long max_pa,
uintptr_t max_va, __unused int xlat_regime)
{
uint64_t mair, ttbr0;
uint32_t ttbcr;
@ -180,7 +178,7 @@ void setup_mmu_cfg(unsigned int flags, const uint64_t *base_table,
#endif
/* Now populate MMU configuration */
mmu_cfg_params[MMU_CFG_MAIR] = mair;
mmu_cfg_params[MMU_CFG_TCR] = (uint64_t) ttbcr;
mmu_cfg_params[MMU_CFG_TTBR0] = ttbr0;
params[MMU_CFG_MAIR] = mair;
params[MMU_CFG_TCR] = (uint64_t) ttbcr;
params[MMU_CFG_TTBR0] = ttbr0;
}

13
lib/xlat_tables_v2/aarch64/xlat_tables_arch.c
View file

@ -13,8 +13,6 @@
#include <xlat_tables_v2.h>
#include "../xlat_tables_private.h"
uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX];
/*
* Returns 1 if the provided granule size is supported, 0 otherwise.
*/
@ -180,8 +178,9 @@ int xlat_arch_current_el(void)
return el;
}
void setup_mmu_cfg(unsigned int flags, const uint64_t *base_table,
unsigned long long max_pa, uintptr_t max_va, int xlat_regime)
void setup_mmu_cfg(uint64_t *params, unsigned int flags,
const uint64_t *base_table, unsigned long long max_pa,
uintptr_t max_va, int xlat_regime)
{
uint64_t mair, ttbr0, tcr;
uintptr_t virtual_addr_space_size;
@ -248,7 +247,7 @@ void setup_mmu_cfg(unsigned int flags, const uint64_t *base_table,
ttbr0 |= TTBR_CNP_BIT;
#endif
mmu_cfg_params[MMU_CFG_MAIR] = mair;
mmu_cfg_params[MMU_CFG_TCR] = tcr;
mmu_cfg_params[MMU_CFG_TTBR0] = ttbr0;
params[MMU_CFG_MAIR] = mair;
params[MMU_CFG_TCR] = tcr;
params[MMU_CFG_TTBR0] = ttbr0;
}

15
lib/xlat_tables_v2/xlat_tables_context.c
View file

@ -12,6 +12,12 @@
#include "xlat_tables_private.h"
/*
* MMU configuration register values for the active translation context. Used
* from the MMU assembly helpers.
*/
uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX];
/*
* Each platform can define the size of its physical and virtual address spaces.
* If the platform hasn't defined one or both of them, default to
@ -105,7 +111,8 @@ void init_xlat_tables(void)
void enable_mmu_secure(unsigned int flags)
{
setup_mmu_cfg(flags, tf_xlat_ctx.base_table, MAX_PHYS_ADDR,
setup_mmu_cfg((uint64_t *)&mmu_cfg_params, flags,
tf_xlat_ctx.base_table, MAX_PHYS_ADDR,
tf_xlat_ctx.va_max_address, EL1_EL0_REGIME);
enable_mmu_direct(flags);
}
@ -114,14 +121,16 @@ void enable_mmu_secure(unsigned int flags)
void enable_mmu_el1(unsigned int flags)
{
setup_mmu_cfg(flags, tf_xlat_ctx.base_table, MAX_PHYS_ADDR,
setup_mmu_cfg((uint64_t *)&mmu_cfg_params, flags,
tf_xlat_ctx.base_table, MAX_PHYS_ADDR,
tf_xlat_ctx.va_max_address, EL1_EL0_REGIME);
enable_mmu_direct_el1(flags);
}
void enable_mmu_el3(unsigned int flags)
{
setup_mmu_cfg(flags, tf_xlat_ctx.base_table, MAX_PHYS_ADDR,
setup_mmu_cfg((uint64_t *)&mmu_cfg_params, flags,
tf_xlat_ctx.base_table, MAX_PHYS_ADDR,
tf_xlat_ctx.va_max_address, EL3_REGIME);
enable_mmu_direct_el3(flags);
}

5
lib/xlat_tables_v2/xlat_tables_private.h
View file

@ -88,11 +88,6 @@ int xlat_arch_current_el(void);
*/
unsigned long long xlat_arch_get_max_supported_pa(void);
/* Enable MMU and configure it to use the specified translation tables. */
void setup_mmu_cfg(unsigned int flags, const uint64_t *base_table,
unsigned long long max_pa, uintptr_t max_va,
int xlat_regime);
/*
* Return 1 if the MMU of the translation regime managed by the given xlat_ctx_t
* is enabled, 0 otherwise.