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armv7: ls102xa: Add workaround for DDR erratum A-008850

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Barrier transactions from CCI400 need to be disabled till
the DDR is configured, otherwise it may lead to system hang.
The patch adds workaround to fix the erratum.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@nxp.com>
Signed-off-by: Alison Wang <alison.wang@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
This commit is contained in:
Alison Wang
2019-03-06 14:49:14 +08:00
committed by Prabhakar Kushwaha
parent ba7eadd8e1
commit 158097052a
10 changed files with 58 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/cpu/armv7/ls102xa/Kconfig
View File

@@ -4,6 +4,7 @@ config ARCH_LS1021A
select SYS_FSL_DDR_VER_50 if SYS_FSL_DDR
select SYS_FSL_ERRATUM_A008378
select SYS_FSL_ERRATUM_A008407
select SYS_FSL_ERRATUM_A008850
select SYS_FSL_ERRATUM_A008997
select SYS_FSL_ERRATUM_A009007
select SYS_FSL_ERRATUM_A009008
@@ -63,6 +64,11 @@ config SYS_CCI400_OFFSET
Offset for CCI400 base.
CCI400 base addr = CCSRBAR + CCI400_OFFSET
config SYS_FSL_ERRATUM_A008850
bool
help
Workaround for DDR erratum A008850
config SYS_FSL_ERRATUM_A008997
bool
help

44
arch/arm/cpu/armv7/ls102xa/soc.c
View File

@@ -11,6 +11,7 @@
#include <asm/arch/ls102xa_soc.h>
#include <asm/arch/ls102xa_stream_id.h>
#include <fsl_csu.h>
#include <fsl_ddr_sdram.h>
struct liodn_id_table sec_liodn_tbl[] = {
SET_SEC_JR_LIODN_ENTRY(0, 0x10, 0x10),
@@ -103,6 +104,41 @@ static void erratum_a009007(void)
#endif /* CONFIG_SYS_FSL_ERRATUM_A009007 */
}
static void erratum_a008850_early(void)
{
#ifdef CONFIG_SYS_FSL_ERRATUM_A008850
/* part 1 of 2 */
struct ccsr_cci400 __iomem *cci = (void *)(CONFIG_SYS_IMMR +
CONFIG_SYS_CCI400_OFFSET);
struct ccsr_ddr __iomem *ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
/* disables propagation of barrier transactions to DDRC from CCI400 */
out_le32(&cci->ctrl_ord, CCI400_CTRLORD_TERM_BARRIER);
/* disable the re-ordering in DDRC */
out_be32(&ddr->eor, DDR_EOR_RD_REOD_DIS | DDR_EOR_WD_REOD_DIS);
#endif
}
void erratum_a008850_post(void)
{
#ifdef CONFIG_SYS_FSL_ERRATUM_A008850
/* part 2 of 2 */
struct ccsr_cci400 __iomem *cci = (void *)(CONFIG_SYS_IMMR +
CONFIG_SYS_CCI400_OFFSET);
struct ccsr_ddr __iomem *ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
u32 tmp;
/* enable propagation of barrier transactions to DDRC from CCI400 */
out_le32(&cci->ctrl_ord, CCI400_CTRLORD_EN_BARRIER);
/* enable the re-ordering in DDRC */
tmp = in_be32(&ddr->eor);
tmp &= ~(DDR_EOR_RD_REOD_DIS | DDR_EOR_WD_REOD_DIS);
out_be32(&ddr->eor, tmp);
#endif
}
void s_init(void)
{
}
@@ -163,13 +199,6 @@ int arch_soc_init(void)
*/
out_le32(&cci->slave[1].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
out_le32(&cci->slave[2].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
/* Workaround for the issue that DDR could not respond to
* barrier transaction which is generated by executing DSB/ISB
* instruction. Set CCI-400 control override register to
* terminate the barrier transaction. After DDR is initialized,
* allow barrier transaction to DDR again */
out_le32(&cci->ctrl_ord, CCI400_CTRLORD_TERM_BARRIER);
}
/* Enable all the snoop signal for various masters */
@@ -191,6 +220,7 @@ int arch_soc_init(void)
out_be32(&scfg->eddrtqcfg, 0x63b20042);
/* Erratum */
erratum_a008850_early();
erratum_a009008();
erratum_a009798();
erratum_a008997();

2
arch/arm/include/asm/arch-ls102xa/ls102xa_soc.h
View File

@@ -10,6 +10,8 @@ unsigned int get_soc_major_rev(void);
int arch_soc_init(void);
int ls102xa_smmu_stream_id_init(void);
void erratum_a008850_post(void);
#ifdef CONFIG_SYS_FSL_ERRATUM_A010315
void erratum_a010315(void);
#endif