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| author | Sherry Sun <sherry.sun@nxp.com> | 2020-01-20 11:13:14 +0800 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2020-07-14 15:23:46 +0800 |
| commit | f3acb02386f4d5df6e5b5eb96302f169c28933db (patch) | |
| tree | 1eee8b632a42d6dc1c45c3560773347e997b49e3 /arch/arm | |
| parent | 1eb325af16e2a6987f4aa91e563ad6c160f64a5a (diff) | |
| download | u-boot-f3acb02386f4d5df6e5b5eb96302f169c28933db.tar.gz u-boot-f3acb02386f4d5df6e5b5eb96302f169c28933db.tar.xz u-boot-f3acb02386f4d5df6e5b5eb96302f169c28933db.zip | |
drivers: ddr: imx8mp: Add inline ECC feature support
the DRAM Controller in i.MX8MP will support a feature called "Inline ECC".
This is supported for all 3 supported DRAM technologies (LPDDR4, DDR4 and
DDR3L). When this feature is enabled by software, the DRAM Controller
reserves 12.5% of DRAM capacity for ECC information, and presents only
the non-ECC portion (lower 87.5% of the installed capacity of DRAM) to
the rest of the SoC.
The DRAM memory can be divided into 8 regions so that if a use case only
requires ECC protection on a subset of memory, then only that subset of
memory need support inline ECC. If this occurs, then there is no
performance penalty accessing the non-ECC-protected memory (no need to
access ECC for this portion of the memory map). This is all configured
with the DRAM Controller.
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/arch-imx8m/ddr.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-imx8m/ddr.h b/arch/arm/include/asm/arch-imx8m/ddr.h index 7a2a2d8edc..04c9c962cf 100644 --- a/arch/arm/include/asm/arch-imx8m/ddr.h +++ b/arch/arm/include/asm/arch-imx8m/ddr.h @@ -529,6 +529,8 @@ enum msg_response { #define DDRC_SBRWDATA0(X) (DDRC_IPS_BASE_ADDR(X) + 0xf2c) #define DDRC_SBRWDATA1(X) (DDRC_IPS_BASE_ADDR(X) + 0xf30) #define DDRC_PDCH(X) (DDRC_IPS_BASE_ADDR(X) + 0xf34) +#define DDRC_SBRSTART0(X) (DDRC_IPS_BASE_ADDR(X) + 0xf38) +#define DDRC_SBRRANGE0(X) (DDRC_IPS_BASE_ADDR(X) + 0xf40) #define DDRC_FREQ1_DERATEEN(X) (DDRC_IPS_BASE_ADDR(X) + 0x2020) #define DDRC_FREQ1_DERATEINT(X) (DDRC_IPS_BASE_ADDR(X) + 0x2024) @@ -708,6 +710,11 @@ int ddr_cfg_phy(struct dram_timing_info *timing_info); void load_lpddr4_phy_pie(void); void ddrphy_trained_csr_save(struct dram_cfg_param *param, unsigned int num); void dram_config_save(struct dram_timing_info *info, unsigned long base); +void board_dram_ecc_scrub(void); +void ddrc_inline_ecc_scrub(unsigned int start_address, + unsigned int range_address); +void ddrc_inline_ecc_scrub_end(unsigned int start_address, + unsigned int range_address); /* utils function for ddr phy training */ int wait_ddrphy_training_complete(void); |