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soc: nxp_imx: Set entry to _vector_start in boot header

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Commit e80e655b01 introduced linker script
enforcement of Cortex-M vector table alignment. Update the i.MX RT boot
header to account for the possibility that the vector table may not be
placed at the address CONFIG_FLASH_BASE_ADDRESS +
CONFIG_ROM_START_OFFSET anymore.

For example, the RT1060 vector table has 176 entries and therefore must
be aligned to 0x400 bytes. If CONFIG_FLASH_BASE_ADDRESS=0x60000000 and
CONFIG_ROM_START_OFFSET=0x2200, the linker script will place the vector
table at 0x60002400 instead of 0x60002200.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
This commit is contained in:
Maureen Helm 2020-08-17 16:29:05 -05:00 committed by Ioannis Glaropoulos
parent b07c2f8463
commit 654a49a9f8
1 changed files with 2 additions and 1 deletions
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3
soc/arm/nxp_imx/rt/soc.c
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@ -9,6 +9,7 @@
#include <init.h>
#include <soc.h>
#include <linker/sections.h>
#include <linker/linker-defs.h>
#include <fsl_clock.h>
#include <arch/cpu.h>
#include <arch/arm/aarch32/cortex_m/cmsis.h>
@ -85,7 +86,7 @@ const __imx_boot_data_section BOOT_DATA_T boot_data = {
const __imx_boot_ivt_section ivt image_vector_table = {
.hdr = IVT_HEADER,
.entry = CONFIG_FLASH_BASE_ADDRESS + CONFIG_ROM_START_OFFSET,
.entry = (uint32_t) _vector_start,
.reserved1 = IVT_RSVD,
#ifdef CONFIG_DEVICE_CONFIGURATION_DATA
.dcd = (uint32_t) dcd_data,