#include "r_typedefs.h"
#include "dr7f701441.dvf.h"
#include "rh850_macros.h"
#include "SDRAM.h"
typedef struct
{
uint32_t u32DBCONF; /* SDRAM Address Configuration */
uint32_t u32DBTR0; /* SDRAM Timing Configuration (1) */
uint32_t u32DBTR1; /* SDRAM Timing Configuration (2) */
uint32_t u32DBTR2; /* SDRAM Timing Configuration (3) */
uint32_t u32DBRFPDN1; /* Refresh time: (tREF_AT*fRAM/nROWS) - SSCG_factor */
uint32_t u32DBRFPDN2; /* Idle- and Busy-thresholds */
uint32_t u32ModeReg; /* Mode Register */
}Mem_SDRAM_Cfg_st_t;
static const uint32_t g_u32MemSDRAMDrvStrConf[4] =
{
/* Mem_SDRAM_DRV_25Ohm */ 0x00000000UL,
/* Mem_SDRAM_DRV_33Ohm */ 0x00001554UL,
/* Mem_SDRAM_DRV_50Ohm */ 0x00002AA8UL,
/* Mem_SDRAM_DRV_100Ohm */ 0x00003FFCUL,
};
static const Mem_SDRAM_Cfg_st_t g_stMemSDRAMProfileList[] =
{
/* MEM_SDRAM_2x_MT48LC16M16A2P_120MHz */
{
/* u32DBCONF -- SDRAM Address Configuration */
((0x011AUL << 16U) | /* - SPLIT[8:0] = 1 0001 1010 = 0x011A */
( 0x0UL << 14U) | /* - BKADM[1:0] = 00, Consecutive addresses */
( 0x0CUL << 8U) | /* - BKADP[5:0] = 00 1100, BA0 set to address 12 */
( 0x00UL << 2U) | /* - BKADB[5:0] = 00 0000, Ineffective when BKM[1:0] = 00 */
( 0x02UL << 0U)), /* - BWIDTH[1:0] = 10, 32 bit bus */
/* u32DBTR0 -- SDRAM Timing Configuration (1) */
(( 2UL << 24U) | /* - CL = 2 clk */
( 4UL << 16U) | /* - tRAS = 5 clk (42ns / 8.33ns = 5.04clk) */
( 7UL << 8U) | /* - tRFC = 8 clk (60ns / 8.33ns = 7.2clk) */
( 1UL << 0U)), /* - tRCD = 2 clk (18ns / 8.33ns = 2.16clk) */
/* u32DBTR1 -- SDRAM Timing Configuration (2) */
(( 0UL << 24U) | /* - CKEH = 1 clk */
( 1UL << 16U) | /* - tRP = 2 clk (18ns) */
( 1UL << 8U) | /* - tRRD = 2 clk (12ns) */
( 2UL << 0U)), /* - tWR = 2 clk (1 clk + 6ns) */
/* u32DBTR2 -- SDRAM Timing Configuration (3) */
(( 1UL << 24U) | /* - tRTP = 2 clk */
( 5UL << 16U) | /* - tRC = 6 clk (60ns) */
( 5UL << 8U) | /* - RDWR = 6 clk (BL = Burst Length + CL = CAS Latency + 1) Would be 7 acc to formula. Hand optimised. */
( 4UL << 0U)), /* - WRRD = 5 clk (BL = Burst Length + 1) */
/* u32DBRFPDN1 -- Refresh time */
((0x00EAUL << 0U)), /* - TREFI = (tREF_AT * fRAM / nROWS) - SSCG_factor
= ( 16ms * 120MHz / 8192rows) - 0%SSCG = 0xEA
SSCG is downspread only, so there is no correction needed */
/* u32DBRFPDN2 -- Idle- and Busy-thresholds */
((0x0555UL << 16U) | /* - LV1TH: tREFI <= LV1TH <= tREFI x 9 */
( 0x02DUL << 0U)), /* - LV0TH: LV0TH = (tRP + tRCD + tWR + 3) x 5 = 45 = 0x02D */
/* u32ModeReg -- Mode Register (Data field refer to DBMRCNT register and SDRAM datasheet) */
(( 0x0UL << 16U) | /* - BA[1:0] = 00 */
( 0x0UL << 10U) | /* - Rsvd = 000 */
( 0x0UL << 9U) | /* - WB = 0, Programmed Burst Length */
( 0x0UL << 7U) | /* - OP Mode = 00, Standard Operation */
( 0x2UL << 4U) | /* - Latency = 010, CAS Latency = 2 */
( 0x0UL << 3U) | /* - BT = 0, Burst Type = Sequential */
( 0x2UL << 0U)), /* - BL = 010, Burst Length = 4 */
},
/* MEM_SDRAM_2x_IS45S16800F_120MHz */
{
/* u32DBCONF -- SDRAM Address Configuration */
((0x0112UL << 16U) | /* - SPLIT[8:0] = 1 0001 0010 = 0x0112 */
( 0x0UL << 14U) | /* - BKADM[1:0] = 00, Consecutive addresses */
( 0x00UL << 8U) | /* - BKADP[5:0] = 00 0000, BA0 set to address 12 */
( 0x00UL << 2U) | /* - BKADB[5:0] = 00 0000, Ineffective when BKM[1:0] = 00 */
( 0x02UL << 0U)), /* - BWIDTH[1:0] = 10, 32 bit bus */
/* u32DBTR0 -- SDRAM Timing Configuration (1) */
(( 3UL << 24U) | /* - CL = 3 clk */
( 6UL << 16U) | /* - tRAS = 7 clk */
( 9UL << 8U) | /* - tRFC = 10 clk */
( 2UL << 0U)), /* - tRCD = 3 clk */
/* u32DBTR1 -- SDRAM Timing Configuration (2) */
(( 0UL << 24U) | /* - CKEH = 1 clk */
( 2UL << 16U) | /* - tRP = 3 clk */
( 1UL << 8U) | /* - tRRD = 2 clk */
( 1UL << 0U)), /* - tWR = 2 clk (tDPL) */
/* u32DBTR2 -- SDRAM Timing Configuration (3) */
(( 2UL << 24U) | /* - tRTP = 3 clk (tRQL)*/
( 9UL << 16U) | /* - tRC = 10 clk */
( 7UL << 8U) | /* - RDWR = 8 clk (BL = Burst Length + CL = CAS Latency + 1) */
( 4UL << 0U)), /* - WRRD = 5 clk (BL = Burst Length + 1) */
/* u32DBRFPDN1 -- Refresh time */
((0x01D5UL << 0U)), /* - TREFI = (tREF_AT * fRAM / nROWS) - SSCG_factor
= ( 16ms * 120MHz / 4096rows) - 0%SSCG = 0x1D5
SSCG is downspread only, so there is no correction needed */
/* u32DBRFPDN2 -- Idle- and Busy-thresholds */
((0x0AAAUL << 16U) | /* - LV1TH: tREFI <= LV1TH <= tREFI x 9 */
( 0x037UL << 0U)), /* - LV0TH: LV0TH = (tRP + tRCD + tWR + 3) x 5 = 55 = 0x037 */
/* u32ModeReg -- Mode Register (Data field refer to DBMRCNT register and SDRAM datasheet) */
(( 0x0UL << 16U) | /* - BA[1:0] = 00 */
( 0x0UL << 10U) | /* - Rsvd = 000 */
( 0x0UL << 9U) | /* - WB = 0, Programmed Burst Length */
( 0x0UL << 7U) | /* - OP Mode = 00, Standard Operation */
( 0x3UL << 4U) | /* - Latency = 011, CAS Latency = 3 */
( 0x0UL << 3U) | /* - BT = 0, Burst Type = Sequential */
( 0x2UL << 0U)), /* - BL = 010, Burst Length = 4 */
},
/* MEM_SDRAM_2x_W9812G6KH_120MHz */
{
/* u32DBCONF -- SDRAM Address Configuration */
((0x0112UL << 16U) | /* - SPLIT[8:0] = 1 0001 0010 = 0x0112 */
( 0x0UL << 14U) | /* - BKADM[1:0] = 00, Consecutive addresses */
( 0x00UL << 8U) | /* - BKADP[5:0] = 00 0000, BA0 set to address 12 */
( 0x00UL << 2U) | /* - BKADB[5:0] = 00 0000, Ineffective when BKM[1:0] = 00 */
( 0x02UL << 0U)), /* - BWIDTH[1:0] = 10, 32 bit bus */
/* u32DBTR0 -- SDRAM Timing Configuration (1) */
(( 2UL << 24U) | /* - CL = 2 clk */
( 4UL << 16U) | /* - tRAS = 5 clk */
( 7UL << 8U) | /* - tRFC = 8 clk */
( 1UL << 0U)), /* - tRCD = 2 clk */
/* u32DBTR1 -- SDRAM Timing Configuration (2) */
(( 0UL << 24U) | /* - CKEH = 1 clk */
( 1UL << 16U) | /* - tRP = 2 clk */
( 1UL << 8U) | /* - tRRD = 2 clk */
( 2UL << 0U)), /* - tWR = 3 clk (tDPL) */
/* u32DBTR2 -- SDRAM Timing Configuration (3) */
(( 1UL << 24U) | /* - tRTP = 2 clk (tRQL)*/
( 7UL << 16U) | /* - tRC = 8 clk */
( 6UL << 8U) | /* - RDWR = 7 clk (BL = Burst Length + CL = CAS Latency + 1) */
( 4UL << 0U)), /* - WRRD = 5 clk (BL = Burst Length + 1) */
/* u32DBRFPDN1 -- Refresh time */
((0x00EAUL << 0U)), /* - TREFI = (tREF_AT * fRAM / nROWS) - SSCG_factor
= ( 16ms * 120MHz / 8192rows) - 0%SSCG = 0xEA
SSCG is downspread only, so there is no correction needed */
/* u32DBRFPDN2 -- Idle- and Busy-thresholds */
((0x0555UL << 16U) | /* - LV1TH: tREFI <= LV1TH <= tREFI x 9 */
( 0x032UL << 0U)), /* - LV0TH: LV0TH = (tRP + tRCD + tWR + 3) x 5 = 50 = 0x032 */
/* u32ModeReg -- Mode Register (Data field refer to DBMRCNT register and SDRAM datasheet) */
(( 0x0UL << 16U) | /* - BA[1:0] = 00 */
( 0x0UL << 10U) | /* - Rsvd = 000 */
( 0x0UL << 9U) | /* - Wr Mode = 0, Burst read and Burst write */
( 0x0UL << 7U) | /* - Rsvd = 00 */
( 0x2UL << 4U) | /* - Latency = 010, CAS Latency = 2 */
( 0x0UL << 3U) | /* - BT = 0, Burst Type = Sequential */
( 0x2UL << 0U)), /* - BL = 010, Burst Length = 4 */
},
};
static const uint32_t g_u32MemSDRAMSizeList[] =
{
/* MEM_SDRAM_2x_MT48LC16M16A2P_120MHz */ 64UL * 1024UL * 1024UL,
/* MEM_SDRAM_2x_IS45S16800F_120MHz */ 32UL * 1024UL * 1024UL,
/* MEM_SDRAM_2x_W9812G6KH_120MHz */ 32UL * 1024UL * 1024UL,
};
uint32_t g_u32MemSDRAMSize;
void Mem_SDRAM_Init(Mem_SDRAM_Profile_en_t enProfile, Mem_SDRAM_Drv_Str_en_t enDrvStr)
{
uint32_t i;
uint32_t u32RegVal;
g_u32MemSDRAMSize = 0UL;
if ((enProfile < 3U) && (enDrvStr < 4U))
{
/* Set drive strength for SDRAM related IO ports */
u32RegVal = SELBDSCTRL;
u32RegVal &= 0xFFFFC003UL;
u32RegVal |= g_u32MemSDRAMDrvStrConf[enDrvStr];
SELBDSCTRL = u32RegVal;
/* Reset SDRAM controller */
Sys_Peripheral_Reset(SYS_PERI_SDRB0);
/* Release the clock supply of PHY */
SDRA0DBPDCNT0 = 0x23000000UL;
SDRA0DBPDCNT0 = 0x23000001UL;
/* Set CKE to high level */
SDRA0DBCMDCNT = 0x00000003UL;
/* Wait 200 us */
for(i = 0U; i < 48000U; i++)
{
nop(); /* => 48000 CPU cycles x 4.167ns */
}
SDRA0DBCONF = g_stMemSDRAMProfileList[enProfile].u32DBCONF; /* SDRAM Address Configuration */
SDRA0DBTR0 = g_stMemSDRAMProfileList[enProfile].u32DBTR0; /* SDRAM Timing Configuration (1) */
SDRA0DBTR1 = g_stMemSDRAMProfileList[enProfile].u32DBTR1; /* SDRAM Timing Configuration (2) */
SDRA0DBTR2 = g_stMemSDRAMProfileList[enProfile].u32DBTR2; /* SDRAM Timing Configuration (3) */
SDRA0DBKIND = 0x00000001UL; /* Set SDR SDRAM operation */
SDRA0DBCMDCNT = 0x00000002UL; /* Execute "Precharge All" */
/* Wait at least tRP time (20ns) */
for(i = 0U; i < 5U; i++)
{
nop(); /* => 5 CPU cycles x 4.167ns */
}
SDRA0DBCMDCNT = 0x00000004UL; /* Execute "Refresh" */
/* Wait at least tRFC time (70ns) */
for(i = 0U; i < 17U; i++)
{
nop(); /* => 17 CPU cycles x 4.167ns */
}
SDRA0DBCMDCNT = 0x00000004UL; /* Execute "Refresh" */
/* Wait at least tRFC time (70ns) */
for(i = 0U; i < 17U; i++)
{
nop(); /* => 17 CPU cycles x 4.167ns */
}
SDRA0DBMRCNT = g_stMemSDRAMProfileList[enProfile].u32ModeReg; /* Execute "Mode Register Set" */
/* Wait at least tMRD time (20ns) */
for(i = 0U; i < 5U; i++)
{
nop(); /* => 5 CPU cycles x 4.167ns */
}
SDRA0DBEN = 0x00000001UL; /* Enable SDRAM data operations */
SDRA0DBRFPDN1 = g_stMemSDRAMProfileList[enProfile].u32DBRFPDN1; /* Refresh time */
SDRA0DBRFPDN2 = g_stMemSDRAMProfileList[enProfile].u32DBRFPDN2; /* Idle- and Busy- thresholds */
SDRA0DBRFPDN0 = 0x00010000UL; /* Enable auto refresh, disable power-down */
g_u32MemSDRAMSize = g_u32MemSDRAMSizeList[enProfile];
}
}
uint32_t Mem_SDRAM_Size(void)
{
return 32UL * 1024UL * 1024UL;
//return g_u32MemSDRAMSize;
}