imx: consolidate set_chipselect_size function

Move MX5 specific set_chipselect_size function into generic i.MX part,
such that MX6 based boards are able to use this function as well.

While doing this the iomuxc gpr member needed to be consolidated between
MX5 and MX6.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c
index 09fc227..24740b8 100644
--- a/arch/arm/imx-common/cpu.c
+++ b/arch/arm/imx-common/cpu.c
@@ -187,3 +187,34 @@ void arch_preboot_os(void)
 	ipuv3_fb_shutdown();
 }
 #endif
+
+void set_chipselect_size(int const cs_size)
+{
+	unsigned int reg;
+	struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
+	reg = readl(&iomuxc_regs->gpr[1]);
+
+	switch (cs_size) {
+	case CS0_128:
+		reg &= ~0x7;	/* CS0=128MB, CS1=0, CS2=0, CS3=0 */
+		reg |= 0x5;
+		break;
+	case CS0_64M_CS1_64M:
+		reg &= ~0x3F;	/* CS0=64MB, CS1=64MB, CS2=0, CS3=0 */
+		reg |= 0x1B;
+		break;
+	case CS0_64M_CS1_32M_CS2_32M:
+		reg &= ~0x1FF;	/* CS0=64MB, CS1=32MB, CS2=32MB, CS3=0 */
+		reg |= 0x4B;
+		break;
+	case CS0_32M_CS1_32M_CS2_32M_CS3_32M:
+		reg &= ~0xFFF;  /* CS0=32MB, CS1=32MB, CS2=32MB, CS3=32MB */
+		reg |= 0x249;
+		break;
+	default:
+		printf("Unknown chip select size: %d\n", cs_size);
+		break;
+	}
+
+	writel(reg, &iomuxc_regs->gpr[1]);
+}