Clear the content to zero and the ECC error bit of OCRAM1/2.
The OCRAM must be initialized to ZERO by the unit of 8-Byte before accessing it, or else it will generate ECC error. And the IBR has accessed the OCRAM before this initialization, so the ECC error status bit should to be cleared.
Signed-off-by: Pratiyush Srivastava pratiyush.srivastava@nxp.com Signed-off-by: Hou Zhiqiang Zhiqiang.Hou@freescale.com Signed-off-by: Prabhakar Kushwaha prabhakar.kushwaha@nxp.com --- arch/arm/cpu/armv8/start.S | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+)
diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S index 19c771d..24fed46 100644 --- a/arch/arm/cpu/armv8/start.S +++ b/arch/arm/cpu/armv8/start.S @@ -11,6 +11,9 @@ #include <asm/macro.h> #include <asm/armv8/mmu.h>
+#define DCSR_SYS_DCFG_SBEESR2 0x20140534 +#define DCSR_SYS_DCFG_MBEESR2 0x20140544 + /************************************************************************* * * Startup Code (reset vector) @@ -259,10 +262,46 @@ WEAK(lowlevel_init) #endif /* CONFIG_ARMV8_MULTIENTRY */
2: +#if defined(CONFIG_FSL_LSCH2) && !defined(CONFIG_SPL_BUILD) + bl fsl_ocram_init +#endif mov lr, x29 /* Restore LR */ ret ENDPROC(lowlevel_init)
+#if defined(CONFIG_FSL_LSCH2) && !defined(CONFIG_SPL_BUILD) +ENTRY(fsl_ocram_init) + mov x28, lr /* Save LR */ + bl fsl_clear_ocram + bl fsl_ocram_clear_ecc_err + mov lr, x28 /* Restore LR */ + ret +ENDPROC(fsl_ocram_init) + +ENTRY(fsl_clear_ocram) +/* Clear OCRAM */ + ldr x0, =CONFIG_SYS_FSL_OCRAM_BASE + ldr x1, =(CONFIG_SYS_FSL_OCRAM_BASE + CONFIG_SYS_FSL_OCRAM_SIZE) + mov x2, #0 +clear_loop: + str x2, [x0] + add x0, x0, #8 + cmp x0, x1 + b.lo clear_loop + ret +ENDPROC(fsl_clear_ocram) + +ENTRY(fsl_ocram_clear_ecc_err) + /* OCRAM1/2 ECC status bit */ + mov w1, #0x60 + ldr x0, =DCSR_SYS_DCFG_SBEESR2 + str w1, [x0] + ldr x0, =DCSR_SYS_DCFG_MBEESR2 + str w1, [x0] + ret +ENDPROC(fsl_ocram_init) +#endif + WEAK(smp_kick_all_cpus) /* Kick secondary cpus up by SGI 0 interrupt */ #if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)