[U-Boot] [PATCH 10/10] ddr: altera: Stratix10: Add ECC memory scrubbing

[Marek Vasut]

On 3/19/19 4:14 AM, Ley Foon Tan wrote:
> On Tue, Mar 12, 2019 at 7:03 PM Marek Vasut <marex at denx.de> wrote:
>>
>> On 3/12/19 9:31 AM, Ley Foon Tan wrote:
>>> Scrub memory content if ECC is enabled and it is not
>>> from warm reset boot.
>>>
>>> Enable icache and dcache before scrub memory
>>> and use "DC ZVA" instruction to clear memory
>>> to zeros. This instruction writes a cache line
>>> at a time and it can prevent false ECC error
>>> trigger if write cache line partially.
>>>
>>> Signed-off-by: Ley Foon Tan <ley.foon.tan at intel.com>
>>> ---
>>>  .../arm/mach-socfpga/include/mach/sdram_s10.h |  9 +++
>>>  drivers/ddr/altera/sdram_s10.c                | 76 +++++++++++++++++++
>>>  2 files changed, 85 insertions(+)
>>>
>>> diff --git a/arch/arm/mach-socfpga/include/mach/sdram_s10.h b/arch/arm/mach-socfpga/include/mach/sdram_s10.h
>>> index 89e355010d..354f80bfce 100644
>>> --- a/arch/arm/mach-socfpga/include/mach/sdram_s10.h
>>> +++ b/arch/arm/mach-socfpga/include/mach/sdram_s10.h
>>> @@ -23,6 +23,7 @@ void setup_memory_banks(phys_addr_t bank_addr[], phys_size_t bank_size[]);
>>>  #define ECCCTRL1                     0x100
>>>  #define ECCCTRL2                     0x104
>>>  #define ERRINTEN                     0x110
>>> +#define ERRINTENS                    0x114
>>>  #define INTMODE                              0x11c
>>>  #define INTSTAT                              0x120
>>>  #define AUTOWB_CORRADDR                      0x138
>>> @@ -53,6 +54,10 @@ void setup_memory_banks(phys_addr_t bank_addr[], phys_size_t bank_size[]);
>>>  #define DDR_HMC_SEQ2CORE_INT_RESP_MASK               BIT(3)
>>>  #define DDR_HMC_HPSINTFCSEL_ENABLE_MASK              0x001f1f1f
>>>
>>> +#define      DDR_HMC_ERRINTEN_INTMASK                                \
>>> +             (DDR_HMC_ERRINTEN_SERRINTEN_EN_SET_MSK |        \
>>> +              DDR_HMC_ERRINTEN_DERRINTEN_EN_SET_MSK)
>>> +
>>>  /* NOC DDR scheduler */
>>>  #define DDR_SCH_ID_COREID            0
>>>  #define DDR_SCH_ID_REVID             0x4
>>> @@ -181,4 +186,8 @@ void setup_memory_banks(phys_addr_t bank_addr[], phys_size_t bank_size[]);
>>>  #define CALTIMING9_CFG_4_ACT_TO_ACT(x)                       \
>>>       (((x) >> 0) & 0xFF)
>>>
>>> +/* Firewall DDR scheduler MPFE */
>>> +#define FW_HMC_ADAPTOR_REG_ADDR                      0xf8020004
>>> +#define FW_HMC_ADAPTOR_MPU_MASK                      BIT(0)
>>> +
>>>  #endif /* _SDRAM_S10_H_ */
>>> diff --git a/drivers/ddr/altera/sdram_s10.c b/drivers/ddr/altera/sdram_s10.c
>>> index ae4e5ea2fd..2c691d3bee 100644
>>> --- a/drivers/ddr/altera/sdram_s10.c
>>> +++ b/drivers/ddr/altera/sdram_s10.c
>>> @@ -22,6 +22,8 @@ static const struct socfpga_system_manager *sysmgr_regs =
>>>
>>>  #define DDR_CONFIG(A, B, C, R)       (((A) << 24) | ((B) << 16) | ((C) << 8) | (R))
>>>
>>> +#define PGTABLE_OFF  0x4000
>>> +
>>>  /* The followring are the supported configurations */
>>>  u32 ddr_config[] = {
>>>       /* DDR_CONFIG(Address order,Bank,Column,Row) */
>>> @@ -135,6 +137,71 @@ static int poll_hmc_clock_status(void)
>>>                                SYSMGR_HMC_CLK_STATUS_MSK, true, 1000, false);
>>>  }
>>>
>>> +static void sdram_clear_mem(phys_addr_t addr, phys_size_t size)
>>> +{
>>> +     phys_size_t i;
>>> +
>>> +     if (addr % CONFIG_SYS_CACHELINE_SIZE) {
>>> +             printf("DDR: address 0x%lx not cacheline size aligned.\n",
>>> +                    (ulong)addr);
>>
>> Is the cast needed ?
> Yes, SPL doesn't support %llx, we need cast to ulong %lx.

But that doesn't work for 64bit addresses ?
Isn't that limitation of tiny printf implementation instead of SPL ?

[...]

-- 
Best regards,
Marek Vasut