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Diffstat (limited to 'arch/arm/mach-omap2/omap4/hwinit.c')
-rw-r--r--arch/arm/mach-omap2/omap4/hwinit.c177
1 files changed, 177 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap4/hwinit.c b/arch/arm/mach-omap2/omap4/hwinit.c
new file mode 100644
index 0000000000..7c6638ca80
--- /dev/null
+++ b/arch/arm/mach-omap2/omap4/hwinit.c
@@ -0,0 +1,177 @@
+/*
+ *
+ * Common functions for OMAP4 based boards
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ * Aneesh V <aneesh@ti.com>
+ * Steve Sakoman <steve@sakoman.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <asm/armv7.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+#include <linux/sizes.h>
+#include <asm/emif.h>
+#include <asm/arch/gpio.h>
+#include <asm/omap_common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+u32 *const omap_si_rev = (u32 *)OMAP_SRAM_SCRATCH_OMAP_REV;
+
+static const struct gpio_bank gpio_bank_44xx[6] = {
+ { (void *)OMAP44XX_GPIO1_BASE },
+ { (void *)OMAP44XX_GPIO2_BASE },
+ { (void *)OMAP44XX_GPIO3_BASE },
+ { (void *)OMAP44XX_GPIO4_BASE },
+ { (void *)OMAP44XX_GPIO5_BASE },
+ { (void *)OMAP44XX_GPIO6_BASE },
+};
+
+const struct gpio_bank *const omap_gpio_bank = gpio_bank_44xx;
+
+#ifdef CONFIG_SPL_BUILD
+/*
+ * Some tuning of IOs for optimal power and performance
+ */
+void do_io_settings(void)
+{
+ u32 lpddr2io;
+
+ u32 omap4_rev = omap_revision();
+
+ if (omap4_rev == OMAP4430_ES1_0)
+ lpddr2io = CONTROL_LPDDR2IO_SLEW_125PS_DRV8_PULL_DOWN;
+ else if (omap4_rev == OMAP4430_ES2_0)
+ lpddr2io = CONTROL_LPDDR2IO_SLEW_325PS_DRV8_GATE_KEEPER;
+ else
+ lpddr2io = CONTROL_LPDDR2IO_SLEW_315PS_DRV12_PULL_DOWN;
+
+ /* EMIF1 */
+ writel(lpddr2io, (*ctrl)->control_lpddr2io1_0);
+ writel(lpddr2io, (*ctrl)->control_lpddr2io1_1);
+ /* No pull for GR10 as per hw team's recommendation */
+ writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
+ (*ctrl)->control_lpddr2io1_2);
+ writel(CONTROL_LPDDR2IO_3_VAL, (*ctrl)->control_lpddr2io1_3);
+
+ /* EMIF2 */
+ writel(lpddr2io, (*ctrl)->control_lpddr2io2_0);
+ writel(lpddr2io, (*ctrl)->control_lpddr2io2_1);
+ /* No pull for GR10 as per hw team's recommendation */
+ writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
+ (*ctrl)->control_lpddr2io2_2);
+ writel(CONTROL_LPDDR2IO_3_VAL, (*ctrl)->control_lpddr2io2_3);
+
+ /*
+ * Some of these settings (TRIM values) come from eFuse and are
+ * in turn programmed in the eFuse at manufacturing time after
+ * calibration of the device. Do the software over-ride only if
+ * the device is not correctly trimmed
+ */
+ if (!(readl((*ctrl)->control_std_fuse_opp_bgap) & 0xFFFF)) {
+
+ writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
+ (*ctrl)->control_ldosram_iva_voltage_ctrl);
+
+ writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
+ (*ctrl)->control_ldosram_mpu_voltage_ctrl);
+
+ writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
+ (*ctrl)->control_ldosram_core_voltage_ctrl);
+ }
+
+ /*
+ * Over-ride the register
+ * i. unconditionally for all 4430
+ * ii. only if un-trimmed for 4460
+ */
+ if (!readl((*ctrl)->control_efuse_1))
+ writel(CONTROL_EFUSE_1_OVERRIDE, (*ctrl)->control_efuse_1);
+
+ if ((omap4_rev < OMAP4460_ES1_0) || !readl((*ctrl)->control_efuse_2))
+ writel(CONTROL_EFUSE_2_OVERRIDE, (*ctrl)->control_efuse_2);
+}
+#endif /* CONFIG_SPL_BUILD */
+
+/* dummy fuction for omap4 */
+void config_data_eye_leveling_samples(u32 emif_base)
+{
+}
+
+void init_omap_revision(void)
+{
+ /*
+ * For some of the ES2/ES1 boards ID_CODE is not reliable:
+ * Also, ES1 and ES2 have different ARM revisions
+ * So use ARM revision for identification
+ */
+ unsigned int arm_rev = cortex_rev();
+
+ switch (arm_rev) {
+ case MIDR_CORTEX_A9_R0P1:
+ *omap_si_rev = OMAP4430_ES1_0;
+ break;
+ case MIDR_CORTEX_A9_R1P2:
+ switch (readl(CONTROL_ID_CODE)) {
+ case OMAP4_CONTROL_ID_CODE_ES2_0:
+ *omap_si_rev = OMAP4430_ES2_0;
+ break;
+ case OMAP4_CONTROL_ID_CODE_ES2_1:
+ *omap_si_rev = OMAP4430_ES2_1;
+ break;
+ case OMAP4_CONTROL_ID_CODE_ES2_2:
+ *omap_si_rev = OMAP4430_ES2_2;
+ break;
+ default:
+ *omap_si_rev = OMAP4430_ES2_0;
+ break;
+ }
+ break;
+ case MIDR_CORTEX_A9_R1P3:
+ *omap_si_rev = OMAP4430_ES2_3;
+ break;
+ case MIDR_CORTEX_A9_R2P10:
+ switch (readl(CONTROL_ID_CODE)) {
+ case OMAP4470_CONTROL_ID_CODE_ES1_0:
+ *omap_si_rev = OMAP4470_ES1_0;
+ break;
+ case OMAP4460_CONTROL_ID_CODE_ES1_1:
+ *omap_si_rev = OMAP4460_ES1_1;
+ break;
+ case OMAP4460_CONTROL_ID_CODE_ES1_0:
+ default:
+ *omap_si_rev = OMAP4460_ES1_0;
+ break;
+ }
+ break;
+ default:
+ *omap_si_rev = OMAP4430_SILICON_ID_INVALID;
+ break;
+ }
+}
+
+void omap_die_id(unsigned int *die_id)
+{
+ die_id[0] = readl((*ctrl)->control_std_fuse_die_id_0);
+ die_id[1] = readl((*ctrl)->control_std_fuse_die_id_1);
+ die_id[2] = readl((*ctrl)->control_std_fuse_die_id_2);
+ die_id[3] = readl((*ctrl)->control_std_fuse_die_id_3);
+}
+
+#ifndef CONFIG_SYS_L2CACHE_OFF
+void v7_outer_cache_enable(void)
+{
+ omap_smc1(OMAP4_SERVICE_PL310_CONTROL_REG_SET, 1);
+}
+
+void v7_outer_cache_disable(void)
+{
+ omap_smc1(OMAP4_SERVICE_PL310_CONTROL_REG_SET, 0);
+}
+#endif /* !CONFIG_SYS_L2CACHE_OFF */