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DMC500: Add platform support to set system interface count

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Some low end platforms using DMC500 memory controller do not have
CCI(Cache Coherent Interconnect) interface and only have non-coherent
system interface support. Hence this patch makes the system interface
count configurable from the platforms.

Change-Id: I6d54c90eb72fd18026c6470c1f7fd26c59dc4b9a
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
This commit is contained in:
Amit Daniel Kachhap 2018-04-09 16:53:01 +05:30
parent 02956560a2
commit d12afc8e73
2 changed files with 15 additions and 4 deletions
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18
drivers/arm/tzc/tzc_dmc500.c
View file

@ -25,6 +25,7 @@
/* Pointer to the tzc_dmc500_driver_data structure populated by the platform */
static const tzc_dmc500_driver_data_t *g_driver_data;
static unsigned int g_sys_if_count;
#define verify_region_attr(region, attr) \
((g_conf_regions[(region)].sec_attr == \
@ -88,7 +89,7 @@ void tzc_dmc500_config_complete(void)
for (dmc_inst = 0; dmc_inst < g_driver_data->dmc_count; dmc_inst++) {
assert(DMC_INST_BASE_ADDR(dmc_inst));
for (sys_if = 0; sys_if < MAX_SYS_IF_COUNT; sys_if++)
for (sys_if = 0; sys_if < g_sys_if_count; sys_if++)
_tzc_dmc500_write_flush_control(
DMC_INST_SI_BASE(dmc_inst, sys_if));
}
@ -119,7 +120,7 @@ int tzc_dmc500_verify_complete(void)
for (dmc_inst = 0; dmc_inst < g_driver_data->dmc_count;
dmc_inst++) {
assert(DMC_INST_BASE_ADDR(dmc_inst));
for (sys_if = 0; sys_if < MAX_SYS_IF_COUNT;
for (sys_if = 0; sys_if < g_sys_if_count;
sys_if++) {
attr = _tzc_dmc500_read_region_attr_0(
DMC_INST_SI_BASE(dmc_inst, sys_if),
@ -154,7 +155,7 @@ void tzc_dmc500_configure_region0(tzc_region_attributes_t sec_attr,
/* Configure region_0 in all DMC instances */
for (dmc_inst = 0; dmc_inst < g_driver_data->dmc_count; dmc_inst++) {
assert(DMC_INST_BASE_ADDR(dmc_inst));
for (sys_if = 0; sys_if < MAX_SYS_IF_COUNT; sys_if++)
for (sys_if = 0; sys_if < g_sys_if_count; sys_if++)
_tzc_dmc500_configure_region0(
DMC_INST_SI_BASE(dmc_inst, sys_if),
sec_attr, nsaid_permissions);
@ -195,7 +196,7 @@ void tzc_dmc500_configure_region(int region_no,
for (dmc_inst = 0; dmc_inst < g_driver_data->dmc_count; dmc_inst++) {
assert(DMC_INST_BASE_ADDR(dmc_inst));
for (sys_if = 0; sys_if < MAX_SYS_IF_COUNT; sys_if++)
for (sys_if = 0; sys_if < g_sys_if_count; sys_if++)
_tzc_dmc500_configure_region(
DMC_INST_SI_BASE(dmc_inst, sys_if),
TZC_DMC500_REGION_ATTR_F_EN_MASK,
@ -272,4 +273,13 @@ void tzc_dmc500_driver_init(const tzc_dmc500_driver_data_t *plat_driver_data)
/* Validates the information passed by platform */
validate_plat_driver_data(plat_driver_data);
g_driver_data = plat_driver_data;
/* Check valid system interface count */
assert(g_driver_data->sys_if_count <= MAX_SYS_IF_COUNT);
g_sys_if_count = g_driver_data->sys_if_count;
/* If interface count is not present then assume max */
if (g_sys_if_count == 0U)
g_sys_if_count = MAX_SYS_IF_COUNT;
}

1
include/drivers/arm/tzc_dmc500.h
View file

@ -130,6 +130,7 @@
typedef struct tzc_dmc500_driver_data {
uintptr_t dmc_base[MAX_DMC_COUNT];
int dmc_count;
unsigned int sys_if_count;
} tzc_dmc500_driver_data_t;
void tzc_dmc500_driver_init(const tzc_dmc500_driver_data_t *plat_driver_data);