Returns the memory configuration for Renesas R8A7795 (R-Car H3) SoCs, revision 3.0 and up.
Signed-off-by: Ulrich Hecht ulrich.hecht+renesas@gmail.com --- See "[RFC] ARM: rmobile: create DT memory nodes for R8A7795 3.0 and newer" for an explanation of this.
CU Uli
include/services/arm_arch_svc.h | 1 + services/arm_arch_svc/arm_arch_svc_setup.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+)
diff --git a/include/services/arm_arch_svc.h b/include/services/arm_arch_svc.h index 2961601..9132336 100644 --- a/include/services/arm_arch_svc.h +++ b/include/services/arm_arch_svc.h @@ -10,5 +10,6 @@ #define SMCCC_VERSION U(0x80000000) #define SMCCC_ARCH_FEATURES U(0x80000001) #define SMCCC_ARCH_WORKAROUND_1 U(0x80008000) +#define SMCCC_RENESAS_MEMCONF U(0x82000000)
#endif /* __ARM_ARCH_SVC_H__ */ diff --git a/services/arm_arch_svc/arm_arch_svc_setup.c b/services/arm_arch_svc/arm_arch_svc_setup.c index eedac86..f836ae8 100644 --- a/services/arm_arch_svc/arm_arch_svc_setup.c +++ b/services/arm_arch_svc/arm_arch_svc_setup.c @@ -56,6 +56,20 @@ uintptr_t arm_arch_svc_smc_handler(uint32_t smc_fid, */ SMC_RET0(handle); #endif + case SMCCC_RENESAS_MEMCONF: +#if (RCAR_DRAM_LPDDR4_MEMCONF == 0) + /* 4GB(1GBx4) */ + SMC_RET1(handle, 1); +#elif (RCAR_DRAM_LPDDR4_MEMCONF == 1) && (RCAR_DRAM_CHANNEL == 5) && \ + (RCAR_DRAM_SPLIT == 2) + /* 4GB(2GBx2 2ch split) */ + SMC_RET1(handle, 2); +#elif (RCAR_DRAM_LPDDR4_MEMCONF == 1) && (RCAR_DRAM_CHANNEL == 15) + /* 8GB(2GBx4: default) */ + SMC_RET1(handle, 3); +#else + SMC_RET1(handle, 0); +#endif /* RCAR_DRAM_LPDDR4_MEMCONF == 0 */ default: WARN("Unimplemented Arm Architecture Service Call: 0x%x \n", smc_fid);