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bsp/tms570: Improve POM handling

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Place the vector table in the start section so that the overlay can be
avoided if we execute from internal flash.  The problem is that when the
POM is enabled, the ECC cannot be enabled for the internal flash.
This commit is contained in:
Sebastian Huber
2023-04-03 08:11:49 +02:00
parent c374727c63
commit 05a4c70aa9
5 changed files with 14 additions and 2 deletions
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1
bsps/arm/tms570/start/linkcmds.tms570ls3137_hdk
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@@ -24,6 +24,7 @@ REGION_ALIAS ("REGION_STACK", RAM_INT);
REGION_ALIAS ("REGION_NOCACHE", RAM_INT);
REGION_ALIAS ("REGION_NOCACHE_LOAD", RAM_INT);
bsp_vector_table_in_start_section = 1;
bsp_int_vec_overlay_start = ORIGIN(RAM_INT_VEC);
INCLUDE linkcmds.armv4

1
bsps/arm/tms570/start/linkcmds.tms570ls3137_hdk_intram
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@@ -24,6 +24,7 @@ REGION_ALIAS ("REGION_STACK", RAM_INT);
REGION_ALIAS ("REGION_NOCACHE", RAM_INT);
REGION_ALIAS ("REGION_NOCACHE_LOAD", RAM_INT);
bsp_vector_table_in_start_section = 1;
bsp_int_vec_overlay_start = ORIGIN(RAM_INT_VEC);
INCLUDE linkcmds.armv4

1
bsps/arm/tms570/start/linkcmds.tms570ls3137_hdk_sdram
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@@ -24,6 +24,7 @@ REGION_ALIAS ("REGION_STACK", RAM_EXT);
REGION_ALIAS ("REGION_NOCACHE", RAM_EXT);
REGION_ALIAS ("REGION_NOCACHE_LOAD", RAM_EXT);
bsp_vector_table_in_start_section = 1;
bsp_int_vec_overlay_start = ORIGIN(RAM_INT_VEC);
INCLUDE linkcmds.armv4

1
bsps/arm/tms570/start/linkcmds.tms570ls3137_hdk_with_loader
View File

@@ -25,6 +25,7 @@ REGION_ALIAS ("REGION_STACK", RAM_INT);
REGION_ALIAS ("REGION_NOCACHE", RAM_INT);
REGION_ALIAS ("REGION_NOCACHE_LOAD", RAM_INT);
bsp_vector_table_in_start_section = 1;
bsp_int_vec_overlay_start = ORIGIN(RAM_INT_VEC);
INCLUDE linkcmds.armv4

12
bsps/arm/tms570/start/tms570-pom.c
View File

@@ -87,7 +87,12 @@ void tms570_initialize_and_clear(void)
*/
void tms570_pom_remap(void)
{
uint32_t vec_overlay_start = pom_global_overlay_target_address_start;
void *vec_overlay_start = (void *) pom_global_overlay_target_address_start;
void *addr_tab = (char *) bsp_start_vector_table_begin + 64;
if (vec_overlay_start == addr_tab) {
return;
}
/*
* Copy RTEMS the first level exception processing code
@@ -99,7 +104,10 @@ void tms570_pom_remap(void)
* table found in
* c/src/lib/libbsp/arm/shared/start/start.S
*/
memcpy((void*)vec_overlay_start, bsp_start_vector_table_begin, 64);
rtems_cache_invalidate_multiple_data_lines(addr_tab, 64);
memcpy(vec_overlay_start, addr_tab, 64);
rtems_cache_flush_multiple_data_lines(vec_overlay_start, 64);
rtems_cache_invalidate_multiple_instruction_lines(vec_overlay_start, 64);
#if 0
{