arm: socfpga: move gen5 SDR driver to DM

To clean up reset handling for socfpga gen5, port the DDR driver to DM
using UCLASS_RAM and implement proper reset handling.

This gets us rid of one ad-hoc call to socfpga_per_reset().

The gen5 driver is implemented in 2 distinct files. One of it (containing
the calibration training) is not touched much and is kept at using
hard coded addresses since the code grows even more otherwise.

SPL is changed from calling hard into the DDR driver code to just
probing UCLASS_RESET and UCLASS_RAM. It is happy after finding a RAM
driver after that.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

1 files changed, 9 insertions, 20 deletions

diff --git a/arch/arm/mach-socfpga/spl_gen5.c b/arch/arm/mach-socfpga/spl_gen5.c
index 142b60f887d..c5399bb6979 100644
--- a/arch/arm/mach-socfpga/spl_gen5.c
+++ b/arch/arm/mach-socfpga/spl_gen5.c
@@ -21,6 +21,7 @@
 #include <debug_uart.h>
 #include <fdtdec.h>
 #include <watchdog.h>
+#include <dm/uclass.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -123,9 +124,9 @@ static void socfpga_pl310_clear(void)
 void board_init_f(ulong dummy)
 {
 	const struct cm_config *cm_default_cfg = cm_get_default_config();
-	unsigned long sdram_size;
 	unsigned long reg;
 	int ret;
+	struct udevice *dev;
 
 	/*
 	 * First C code to run. Clear fake OCRAM ECC first as SBE
@@ -156,7 +157,6 @@ void board_init_f(ulong dummy)
 		socfpga_bridges_reset(1);
 	}
 
-	socfpga_per_reset(SOCFPGA_RESET(SDR), 0);
 	socfpga_per_reset(SOCFPGA_RESET(UART0), 0);
 	socfpga_per_reset(SOCFPGA_RESET(OSC1TIMER0), 0);
 
@@ -200,27 +200,16 @@ void board_init_f(ulong dummy)
 		hang();
 	}
 
+	ret = uclass_get_device(UCLASS_RESET, 0, &dev);
+	if (ret)
+		debug("Reset init failed: %d\n", ret);
+
 	/* enable console uart printing */
 	preloader_console_init();
 
-	if (sdram_mmr_init_full(0xffffffff) != 0) {
-		puts("SDRAM init failed.\n");
-		hang();
-	}
-
-	debug("SDRAM: Calibrating PHY\n");
-	/* SDRAM calibration */
-	if (sdram_calibration_full() == 0) {
-		puts("SDRAM calibration failed.\n");
-		hang();
-	}
-
-	sdram_size = sdram_calculate_size();
-	debug("SDRAM: %ld MiB\n", sdram_size >> 20);
-
-	/* Sanity check ensure correct SDRAM size specified */
-	if (get_ram_size(0, sdram_size) != sdram_size) {
-		puts("SDRAM size check failed!\n");
+	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+	if (ret) {
+		debug("DRAM init failed: %d\n", ret);
 		hang();
 	}