drivers, block: remove sil680 driver

[platform/kernel/u-boot.git] / arch / powerpc / cpu / ppc4xx / 44x_spd_ddr2.c

diff --git a/arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c b/arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c
index f8d03cb..ffc62a5 100644 (file)
--- a/arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c
@@ -33,6 +33,8 @@
 
 #include "ecc.h"
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #define PPC4xx_IBM_DDR2_DUMP_REGISTER(mnemonic)                                \
        do {                                                            \
                u32 data;                                               \
@@ -401,20 +403,20 @@ static unsigned char spd_read(uchar chip, uint addr)
 }
 
 /*-----------------------------------------------------------------------------+
- * initdram.  Initializes the 440SP Memory Queue and DDR SDRAM controller.
+ * dram_init.  Initializes the 440SP Memory Queue and DDR SDRAM controller.
  * Note: This routine runs from flash with a stack set up in the chip's
  * sram space.  It is important that the routine does not require .sbss, .bss or
  * .data sections.  It also cannot call routines that require these sections.
  *-----------------------------------------------------------------------------*/
 /*-----------------------------------------------------------------------------
- * Function:    initdram
+ * Function:    dram_init
  * Description:  Configures SDRAM memory banks for DDR operation.
  *              Auto Memory Configuration option reads the DDR SDRAM EEPROMs
  *              via the IIC bus and then configures the DDR SDRAM memory
  *              banks appropriately. If Auto Memory Configuration is
  *              not used, it is assumed that no DIMM is plugged
  *-----------------------------------------------------------------------------*/
-phys_size_t initdram(int board_type)
+int dram_init(void)
 {
        unsigned char iic0_dimm_addr[] = SPD_EEPROM_ADDRESS;
        unsigned long dimm_populated[MAXDIMMS] = {SDRAM_NONE, SDRAM_NONE};
@@ -424,6 +426,16 @@ phys_size_t initdram(int board_type)
        int write_recovery;
        phys_size_t dram_size = 0;
 
+       if (IS_ENABLED(CONFIG_SYS_RAMBOOT)) {
+               /*
+                * Reduce RAM size to avoid overwriting memory used by
+                * current stack? Not sure what is happening.
+                */
+               gd->ram_size = sdram_memsize() / 2;
+
+               return 0;
+       }
+
        num_dimm_banks = sizeof(iic0_dimm_addr);
 
        /*------------------------------------------------------------------
@@ -642,7 +654,9 @@ phys_size_t initdram(int board_type)
         */
        set_mcsr(get_mcsr());
 
-       return sdram_memsize();
+       gd->ram_size = sdram_memsize();
+
+       return 0;
 }
 
 static void get_spd_info(unsigned long *dimm_populated,
@@ -1661,7 +1675,7 @@ static void program_mode(unsigned long *dimm_populated,
                for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) {
                        /* If a dimm is installed in a particular slot ... */
                        if (dimm_populated[dimm_num] != SDRAM_NONE)
-                               t_wr_ns = max(t_wr_ns,
+                               t_wr_ns = max(t_wr_ns, (unsigned long)
                                              spd_read(iic0_dimm_addr[dimm_num], 36) >> 2);
                }
 
@@ -1838,12 +1852,18 @@ static void program_tr(unsigned long *dimm_populated,
                        else
                                sdram_ddr1 = false;
 
-                       t_rcd_ns = max(t_rcd_ns, spd_read(iic0_dimm_addr[dimm_num], 29) >> 2);
-                       t_rrd_ns = max(t_rrd_ns, spd_read(iic0_dimm_addr[dimm_num], 28) >> 2);
-                       t_rp_ns  = max(t_rp_ns,  spd_read(iic0_dimm_addr[dimm_num], 27) >> 2);
-                       t_ras_ns = max(t_ras_ns, spd_read(iic0_dimm_addr[dimm_num], 30));
-                       t_rc_ns  = max(t_rc_ns,  spd_read(iic0_dimm_addr[dimm_num], 41));
-                       t_rfc_ns = max(t_rfc_ns, spd_read(iic0_dimm_addr[dimm_num], 42));
+                       t_rcd_ns = max(t_rcd_ns,
+                                      (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 29) >> 2);
+                       t_rrd_ns = max(t_rrd_ns,
+                                      (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 28) >> 2);
+                       t_rp_ns  = max(t_rp_ns,
+                                      (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 27) >> 2);
+                       t_ras_ns = max(t_ras_ns,
+                                      (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 30));
+                       t_rc_ns  = max(t_rc_ns,
+                                      (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 41));
+                       t_rfc_ns = max(t_rfc_ns,
+                                      (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 42));
                }
        }
 
@@ -1916,9 +1936,12 @@ static void program_tr(unsigned long *dimm_populated,
                for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) {
                        /* If a dimm is installed in a particular slot ... */
                        if (dimm_populated[dimm_num] != SDRAM_NONE) {
-                               t_wpc_ns = max(t_wtr_ns, spd_read(iic0_dimm_addr[dimm_num], 36) >> 2);
-                               t_wtr_ns = max(t_wtr_ns, spd_read(iic0_dimm_addr[dimm_num], 37) >> 2);
-                               t_rpc_ns = max(t_rpc_ns, spd_read(iic0_dimm_addr[dimm_num], 38) >> 2);
+                               t_wpc_ns = max(t_wtr_ns,
+                                              (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 36) >> 2);
+                               t_wtr_ns = max(t_wtr_ns,
+                                              (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 37) >> 2);
+                               t_rpc_ns = max(t_rpc_ns,
+                                              (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 38) >> 2);
                        }
                }
 
@@ -2314,7 +2337,8 @@ static void program_ecc(unsigned long *dimm_populated,
        for (dimm_num = 0; dimm_num < MAXDIMMS; dimm_num++) {
                /* If a dimm is installed in a particular slot ... */
                if (dimm_populated[dimm_num] != SDRAM_NONE)
-                       ecc = max(ecc, spd_read(iic0_dimm_addr[dimm_num], 11));
+                       ecc = max(ecc,
+                                 (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 11));
        }
        if (ecc == 0)
                return;
@@ -2831,13 +2855,13 @@ static void test(void)
 #else /* CONFIG_SPD_EEPROM */
 
 /*-----------------------------------------------------------------------------
- * Function:   initdram
+ * Function:   dram_init
  * Description: Configures the PPC4xx IBM DDR1/DDR2 SDRAM memory controller.
  *             The configuration is performed using static, compile-
  *             time parameters.
  *             Configures the PPC405EX(r) and PPC460EX/GT
  *---------------------------------------------------------------------------*/
-phys_size_t initdram(int board_type)
+int dram_init(void)
 {
        unsigned long val;
 
@@ -2993,7 +3017,9 @@ phys_size_t initdram(int board_type)
        set_mcsr(get_mcsr());
 #endif /* CONFIG_PPC4xx_DDR_AUTOCALIBRATION */
 
-       return (CONFIG_SYS_MBYTES_SDRAM << 20);
+       gd->ram_size = CONFIG_SYS_MBYTES_SDRAM << 20;
+
+       return 0;
 }
 #endif /* CONFIG_SPD_EEPROM */