[U-Boot] [PATCH v1] mc : Add support to run MC in 128 MB DDR size

[Meenakshi Aggarwal]

ls2088, ls1088 : minimum DDR size for MC is 128 MB
lx2 : minimum DDR size for MC is 256 MB

Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal at nxp.com>
---
 drivers/net/fsl-mc/mc.c          | 23 +++++++++++++++++++----
 include/configs/ls1088a_common.h |  2 +-
 include/configs/ls2080a_common.h |  2 +-
 include/configs/lx2160a_common.h |  2 +-
 4 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/drivers/net/fsl-mc/mc.c b/drivers/net/fsl-mc/mc.c
index d0b8c03..7ba44cd 100644
--- a/drivers/net/fsl-mc/mc.c
+++ b/drivers/net/fsl-mc/mc.c
@@ -28,6 +28,7 @@
 #define MC_MEM_SIZE_ENV_VAR	"mcmemsize"
 #define MC_BOOT_TIMEOUT_ENV_VAR	"mcboottimeout"
 #define MC_BOOT_ENV_VAR		"mcinitcmd"
+#define MC_DRAM_BLOCK_DEFAULT_SIZE (512UL * 1024 * 1024)
 
 DECLARE_GLOBAL_DATA_PTR;
 static int mc_memset_resv_ram;
@@ -683,7 +684,8 @@ int mc_init(u64 mc_fw_addr, u64 mc_dpc_addr)
 	size_t mc_ram_size = mc_get_dram_block_size();
 
 	mc_ram_num_256mb_blocks = mc_ram_size / MC_RAM_SIZE_ALIGNMENT;
-	if (mc_ram_num_256mb_blocks < 1 || mc_ram_num_256mb_blocks > 0xff) {
+
+	if (mc_ram_num_256mb_blocks >= 0xff) {
 		error = -EINVAL;
 		printf("fsl-mc: ERROR: invalid MC private RAM size (%lu)\n",
 		       mc_ram_size);
@@ -691,6 +693,13 @@ int mc_init(u64 mc_fw_addr, u64 mc_dpc_addr)
 	}
 
 	/*
+	 * To support 128 MB DDR Size for MC
+	 */
+	if (mc_ram_num_256mb_blocks == 0) {
+		mc_ram_num_256mb_blocks = 0xFF;
+	}
+
+	/*
 	 * Management Complex cores should be held at reset out of POR.
 	 * U-Boot should be the first software to touch MC. To be safe,
 	 * we reset all cores again by setting GCR1 to 0. It doesn't do
@@ -730,8 +739,14 @@ int mc_init(u64 mc_fw_addr, u64 mc_dpc_addr)
 	/*
 	 * Tell MC what is the address range of the DRAM block assigned to it:
 	 */
-	reg_mcfbalr = (u32)mc_ram_addr |
-		      (mc_ram_num_256mb_blocks - 1);
+	if (mc_ram_num_256mb_blocks < 0xFF) {
+		reg_mcfbalr = (u32)mc_ram_addr |
+				(mc_ram_num_256mb_blocks - 1);
+	} else {
+		reg_mcfbalr = (u32)mc_ram_addr |
+				(mc_ram_num_256mb_blocks);
+	}
+
 	out_le32(&mc_ccsr_regs->reg_mcfbalr, reg_mcfbalr);
 	out_le32(&mc_ccsr_regs->reg_mcfbahr,
 		 (u32)(mc_ram_addr >> 32));
@@ -876,7 +891,7 @@ unsigned long mc_get_dram_block_size(void)
 			       "\' environment variable: %lu\n",
 			       dram_block_size);
 
-			dram_block_size = CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE;
+			dram_block_size = MC_DRAM_BLOCK_DEFAULT_SIZE;
 		}
 	}
 
diff --git a/include/configs/ls1088a_common.h b/include/configs/ls1088a_common.h
index 89133c2..1509292 100644
--- a/include/configs/ls1088a_common.h
+++ b/include/configs/ls1088a_common.h
@@ -154,7 +154,7 @@ unsigned long long get_qixis_addr(void);
  */
 
 #if defined(CONFIG_FSL_MC_ENET)
-#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE		(512UL * 1024 * 1024)
+#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE		(128UL * 1024 * 1024)
 #endif
 /* Command line configuration */
 #define CONFIG_CMD_CACHE
diff --git a/include/configs/ls2080a_common.h b/include/configs/ls2080a_common.h
index ab38981..7c1d35b 100644
--- a/include/configs/ls2080a_common.h
+++ b/include/configs/ls2080a_common.h
@@ -159,7 +159,7 @@ unsigned long long get_qixis_addr(void);
  * 512MB aligned, so the min size to hide is 512MB.
  */
 #ifdef CONFIG_FSL_MC_ENET
-#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE		(512UL * 1024 * 1024)
+#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE		(128UL * 1024 * 1024)
 #endif
 
 /* Command line configuration */
diff --git a/include/configs/lx2160a_common.h b/include/configs/lx2160a_common.h
index 0f1a621..c4bbe96 100644
--- a/include/configs/lx2160a_common.h
+++ b/include/configs/lx2160a_common.h
@@ -102,7 +102,7 @@
  * 512MB aligned, so the min size to hide is 512MB.
  */
 #ifdef CONFIG_FSL_MC_ENET
-#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE	(512UL * 1024 * 1024)
+#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE	(256UL * 1024 * 1024)
 #endif
 
 /* I2C bus multiplexer */
-- 
1.9.1