Hi Jamin,
On 27/5/24 10:02, Jamin Lin wrote:
The SDRAM memory controller(DRAMC) controls the access to external
DDR4 and DDR5 SDRAM and power up to DDR4 and DDR5 PHY.
The DRAM memory controller of AST2700 is not backward compatible
to previous chips such AST2600, AST2500 and AST2400.
Max memory is now 8GiB on the AST2700. Introduce new
aspeed_2700_sdmc and class with read/write operation and
reset handlers.
Define DRAMC necessary protected registers and
unprotected registers for AST2700 and increase
the register set to 0x1000.
Add unlocked property to change controller protected status.
Signed-off-by: Troy Lee <troy_...@aspeedtech.com>
Signed-off-by: Jamin Lin <jamin_...@aspeedtech.com>
Reviewed-by: Cédric Le Goater <c...@kaod.org>
---
hw/misc/aspeed_sdmc.c | 190 +++++++++++++++++++++++++++++++++-
include/hw/misc/aspeed_sdmc.h | 5 +-
2 files changed, 193 insertions(+), 2 deletions(-)
diff --git a/include/hw/misc/aspeed_sdmc.h b/include/hw/misc/aspeed_sdmc.h
index ec2d59a14f..61c979583a 100644
--- a/include/hw/misc/aspeed_sdmc.h
+++ b/include/hw/misc/aspeed_sdmc.h
@@ -17,6 +17,7 @@ OBJECT_DECLARE_TYPE(AspeedSDMCState, AspeedSDMCClass,
ASPEED_SDMC)
#define TYPE_ASPEED_2400_SDMC TYPE_ASPEED_SDMC "-ast2400"
#define TYPE_ASPEED_2500_SDMC TYPE_ASPEED_SDMC "-ast2500"
#define TYPE_ASPEED_2600_SDMC TYPE_ASPEED_SDMC "-ast2600"
+#define TYPE_ASPEED_2700_SDMC TYPE_ASPEED_SDMC "-ast2700"
/*
* SDMC has 174 documented registers. In addition the u-boot device tree
@@ -29,7 +30,7 @@ OBJECT_DECLARE_TYPE(AspeedSDMCState, AspeedSDMCClass,
ASPEED_SDMC)
* time, and the other is in the DDR-PHY IP which is used during DDR-PHY
* training.
*/
-#define ASPEED_SDMC_NR_REGS (0x500 >> 2)
+#define ASPEED_SDMC_NR_REGS (0x1000 >> 2)
This change breaks the migration stream.
struct AspeedSDMCState {
/*< private >*/
@@ -41,6 +42,7 @@ struct AspeedSDMCState {
uint32_t regs[ASPEED_SDMC_NR_REGS];
uint64_t ram_size;
uint64_t max_ram_size;
+ bool unlocked;
};
