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| author | Hou Zhiqiang <Zhiqiang.Hou@nxp.com> | 2016-12-16 09:15:46 (GMT) |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2017-01-18 17:27:27 (GMT) |
| commit | 3b6bf8115ff2d85caa5b0af366b7053d5c7822fd (patch) | |
| tree | 22c588cfa35f95d89062d5aa49316033181f38c6 /arch/arm/cpu | |
| parent | 6930be345aab208ac22ace91eea6790a13b46262 (diff) | |
| download | u-boot-3b6bf8115ff2d85caa5b0af366b7053d5c7822fd.tar.xz | |
armv8/fsl_lsch2: Add the OCRAM initialization
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: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Pratiyush Srivastava <pratiyush.srivastava@nxp.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S b/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S index 3404459..04a2598 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S +++ b/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S @@ -229,10 +229,47 @@ ENTRY(lowlevel_init) isb #endif +#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_DCFG_SBEESR2 + str w1, [x0] + ldr x0, =DCSR_DCFG_MBEESR2 + str w1, [x0] + ret +ENDPROC(fsl_ocram_init) +#endif + #ifdef CONFIG_FSL_LSCH3 .globl get_svr get_svr: |