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82 lines
2.2 KiB
82 lines
2.2 KiB
From b3bbf1aeb0245a0f5565f669dd4b2f5f5be40d8a Mon Sep 17 00:00:00 2001
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From: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
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Date: Wed, 16 Mar 2016 08:43:55 +0530
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Subject: [PATCH 08/93] armv8/ls1043a: Add the OCRAM initialization
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Clear the content to zero and the ECC error bit of OCRAM1/2.
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The OCRAM must be initialized to ZERO by the unit of 8-Byte before
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accessing it, or else it will generate ECC error. And the IBR has
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accessed the OCRAM before this initialization, so the ECC error
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status bit should to be cleared.
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Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@freescale.com>
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Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
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---
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arch/arm/cpu/armv8/start.S | 39 +++++++++++++++++++++++++++++++++++++++
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1 file changed, 39 insertions(+)
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diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S
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index dd583c9..235213f 100644
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--- a/arch/arm/cpu/armv8/start.S
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+++ b/arch/arm/cpu/armv8/start.S
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@@ -11,6 +11,9 @@
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#include <asm/macro.h>
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#include <asm/armv8/mmu.h>
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+#define DCSR_SYS_DCFG_SBEESR2 0x20140534
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+#define DCSR_SYS_DCFG_MBEESR2 0x20140544
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+
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/*************************************************************************
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*
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* Startup Code (reset vector)
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@@ -215,10 +218,46 @@ WEAK(lowlevel_init)
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#endif /* CONFIG_ARMV8_MULTIENTRY */
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2:
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+#if defined(CONFIG_FSL_LSCH2) && !defined(CONFIG_SPL_BUILD)
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+ bl fsl_ocram_init
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+#endif
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mov lr, x29 /* Restore LR */
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ret
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ENDPROC(lowlevel_init)
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+#if defined(CONFIG_FSL_LSCH2) && !defined(CONFIG_SPL_BUILD)
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+ENTRY(fsl_ocram_init)
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+ mov x28, lr /* Save LR */
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+ bl fsl_clear_ocram
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+ bl fsl_ocram_clear_ecc_err
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+ mov lr, x28 /* Restore LR */
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+ ret
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+ENDPROC(fsl_ocram_init)
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+
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+ENTRY(fsl_clear_ocram)
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+/* Clear OCRAM */
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+ ldr x0, =CONFIG_SYS_FSL_OCRAM_BASE
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+ ldr x1, =(CONFIG_SYS_FSL_OCRAM_BASE + CONFIG_SYS_FSL_OCRAM_SIZE)
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+ mov x2, #0
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+clear_loop:
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+ str x2, [x0]
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+ add x0, x0, #8
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+ cmp x0, x1
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+ b.lo clear_loop
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+ ret
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+ENDPROC(fsl_clear_ocram)
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+
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+ENTRY(fsl_ocram_clear_ecc_err)
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+ /* OCRAM1/2 ECC status bit */
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+ mov w1, #0x60
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+ ldr x0, =DCSR_SYS_DCFG_SBEESR2
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+ str w1, [x0]
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+ ldr x0, =DCSR_SYS_DCFG_MBEESR2
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+ str w1, [x0]
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+ ret
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+ENDPROC(fsl_ocram_init)
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+#endif
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+
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WEAK(smp_kick_all_cpus)
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/* Kick secondary cpus up by SGI 0 interrupt */
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mov x29, lr /* Save LR */
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--
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1.7.9.5
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