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-rw-r--r--arch/arm/cpu/armv7/sunxi/Makefile5
-rw-r--r--arch/arm/cpu/armv7/sunxi/board.c3
-rw-r--r--arch/arm/cpu/armv7/sunxi/clock_sun6i.c26
-rw-r--r--arch/arm/cpu/armv7/sunxi/cpu_info.c57
-rw-r--r--arch/arm/cpu/armv7/sunxi/dram_sun4i.c17
-rw-r--r--arch/arm/cpu/armv7/sunxi/dram_sun6i.c77
-rw-r--r--arch/arm/cpu/armv7/sunxi/dram_sun8i.c345
-rw-r--r--arch/arm/cpu/armv7/sunxi/p2wi.c14
-rw-r--r--arch/arm/cpu/armv7/sunxi/psci.S201
-rw-r--r--arch/arm/cpu/armv7/sunxi/rsb.c158
-rw-r--r--arch/arm/cpu/armv7/sunxi/usbc.c272
11 files changed, 1080 insertions, 95 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/Makefile b/arch/arm/cpu/armv7/sunxi/Makefile
index 3b6ae47..1720f7d 100644
--- a/arch/arm/cpu/armv7/sunxi/Makefile
+++ b/arch/arm/cpu/armv7/sunxi/Makefile
@@ -10,10 +10,13 @@
obj-y += timer.o
obj-y += board.o
obj-y += clock.o
+obj-y += cpu_info.o
obj-y += pinmux.o
+obj-y += usbc.o
obj-$(CONFIG_MACH_SUN6I) += prcm.o
obj-$(CONFIG_MACH_SUN8I) += prcm.o
obj-$(CONFIG_MACH_SUN6I) += p2wi.o
+obj-$(CONFIG_MACH_SUN8I) += rsb.o
obj-$(CONFIG_MACH_SUN4I) += clock_sun4i.o
obj-$(CONFIG_MACH_SUN5I) += clock_sun4i.o
obj-$(CONFIG_MACH_SUN6I) += clock_sun6i.o
@@ -21,7 +24,6 @@ obj-$(CONFIG_MACH_SUN7I) += clock_sun4i.o
obj-$(CONFIG_MACH_SUN8I) += clock_sun6i.o
ifndef CONFIG_SPL_BUILD
-obj-y += cpu_info.o
ifdef CONFIG_ARMV7_PSCI
obj-y += psci.o
endif
@@ -32,6 +34,7 @@ obj-$(CONFIG_MACH_SUN4I) += dram_sun4i.o
obj-$(CONFIG_MACH_SUN5I) += dram_sun4i.o
obj-$(CONFIG_MACH_SUN6I) += dram_sun6i.o
obj-$(CONFIG_MACH_SUN7I) += dram_sun4i.o
+obj-$(CONFIG_MACH_SUN8I) += dram_sun8i.o
ifdef CONFIG_SPL_FEL
obj-y += start.o
endif
diff --git a/arch/arm/cpu/armv7/sunxi/board.c b/arch/arm/cpu/armv7/sunxi/board.c
index 9b3e80c..bc98c56 100644
--- a/arch/arm/cpu/armv7/sunxi/board.c
+++ b/arch/arm/cpu/armv7/sunxi/board.c
@@ -114,7 +114,8 @@ void reset_cpu(ulong addr)
/* do some early init */
void s_init(void)
{
-#if defined CONFIG_SPL_BUILD && defined CONFIG_MACH_SUN6I
+#if defined CONFIG_SPL_BUILD && \
+ (defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I)
/* Magic (undocmented) value taken from boot0, without this DRAM
* access gets messed up (seems cache related) */
setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800);
diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
index 8e949c6..d7a7040 100644
--- a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
+++ b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
@@ -97,6 +97,7 @@ void clock_set_pll1(unsigned int clk)
{
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ const int p = 0;
int k = 1;
int m = 1;
@@ -113,8 +114,11 @@ void clock_set_pll1(unsigned int clk)
CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT,
&ccm->cpu_axi_cfg);
- /* PLL1 rate = 24000000 * n * k / m */
- writel(CCM_PLL1_CTRL_EN | CCM_PLL1_CTRL_MAGIC |
+ /*
+ * sun6i: PLL1 rate = ((24000000 * n * k) >> 0) / m (p is ignored)
+ * sun8i: PLL1 rate = ((24000000 * n * k) >> p) / m
+ */
+ writel(CCM_PLL1_CTRL_EN | CCM_PLL1_CTRL_P(p) |
CCM_PLL1_CTRL_N(clk / (24000000 * k / m)) |
CCM_PLL1_CTRL_K(k) | CCM_PLL1_CTRL_M(m), &ccm->pll1_cfg);
sdelay(200);
@@ -144,15 +148,25 @@ void clock_set_pll3(unsigned int clk)
&ccm->pll3_cfg);
}
-void clock_set_pll5(unsigned int clk)
+void clock_set_pll5(unsigned int clk, bool sigma_delta_enable)
{
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
- const int k = 2;
- const int m = 1;
+ const int max_n = 32;
+ int k = 1, m = 2;
+
+ if (sigma_delta_enable)
+ writel(CCM_PLL5_PATTERN, &ccm->pll5_pattern_cfg);
/* PLL5 rate = 24000000 * n * k / m */
- writel(CCM_PLL5_CTRL_EN | CCM_PLL5_CTRL_UPD |
+ if (clk > 24000000 * k * max_n / m) {
+ m = 1;
+ if (clk > 24000000 * k * max_n / m)
+ k = 2;
+ }
+ writel(CCM_PLL5_CTRL_EN |
+ (sigma_delta_enable ? CCM_PLL5_CTRL_SIGMA_DELTA_EN : 0) |
+ CCM_PLL5_CTRL_UPD |
CCM_PLL5_CTRL_N(clk / (24000000 * k / m)) |
CCM_PLL5_CTRL_K(k) | CCM_PLL5_CTRL_M(m), &ccm->pll5_cfg);
diff --git a/arch/arm/cpu/armv7/sunxi/cpu_info.c b/arch/arm/cpu/armv7/sunxi/cpu_info.c
index 41b9add..b6cb9de 100644
--- a/arch/arm/cpu/armv7/sunxi/cpu_info.c
+++ b/arch/arm/cpu/armv7/sunxi/cpu_info.c
@@ -9,6 +9,33 @@
#include <common.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
+#include <asm/arch/clock.h>
+#include <axp221.h>
+
+#ifdef CONFIG_MACH_SUN6I
+int sunxi_get_ss_bonding_id(void)
+{
+ struct sunxi_ccm_reg * const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ static int bonding_id = -1;
+
+ if (bonding_id != -1)
+ return bonding_id;
+
+ /* Enable Security System */
+ setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS);
+ setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS);
+
+ bonding_id = readl(SUNXI_SS_BASE);
+ bonding_id = (bonding_id >> 16) & 0x7;
+
+ /* Disable Security System again */
+ clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS);
+ clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS);
+
+ return bonding_id;
+}
+#endif
#ifdef CONFIG_DISPLAY_CPUINFO
int print_cpuinfo(void)
@@ -24,7 +51,17 @@ int print_cpuinfo(void)
default: puts("CPU: Allwinner A1X (SUN5I)\n");
}
#elif defined CONFIG_MACH_SUN6I
- puts("CPU: Allwinner A31 (SUN6I)\n");
+ switch (sunxi_get_ss_bonding_id()) {
+ case SUNXI_SS_BOND_ID_A31:
+ puts("CPU: Allwinner A31 (SUN6I)\n");
+ break;
+ case SUNXI_SS_BOND_ID_A31S:
+ puts("CPU: Allwinner A31s (SUN6I)\n");
+ break;
+ default:
+ printf("CPU: Allwinner A31? (SUN6I, id: %d)\n",
+ sunxi_get_ss_bonding_id());
+ }
#elif defined CONFIG_MACH_SUN7I
puts("CPU: Allwinner A20 (SUN7I)\n");
#elif defined CONFIG_MACH_SUN8I
@@ -36,3 +73,21 @@ int print_cpuinfo(void)
return 0;
}
#endif
+
+int sunxi_get_sid(unsigned int *sid)
+{
+#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+#ifdef CONFIG_AXP221_POWER
+ return axp221_get_sid(sid);
+#else
+ return -ENODEV;
+#endif
+#else
+ int i;
+
+ for (i = 0; i< 4; i++)
+ sid[i] = readl(SUNXI_SID_BASE + 4 * i);
+
+ return 0;
+#endif
+}
diff --git a/arch/arm/cpu/armv7/sunxi/dram_sun4i.c b/arch/arm/cpu/armv7/sunxi/dram_sun4i.c
index ec8aaa7..c736fa3 100644
--- a/arch/arm/cpu/armv7/sunxi/dram_sun4i.c
+++ b/arch/arm/cpu/armv7/sunxi/dram_sun4i.c
@@ -36,24 +36,11 @@
#define CPU_CFG_CHIP_REV_B 0x3
/*
- * Wait up to 1s for value to be set in given part of reg.
- */
-static void await_completion(u32 *reg, u32 mask, u32 val)
-{
- unsigned long tmo = timer_get_us() + 1000000;
-
- while ((readl(reg) & mask) != val) {
- if (timer_get_us() > tmo)
- panic("Timeout initialising DRAM\n");
- }
-}
-
-/*
* Wait up to 1s for mask to be clear in given reg.
*/
static inline void await_bits_clear(u32 *reg, u32 mask)
{
- await_completion(reg, mask, 0);
+ mctl_await_completion(reg, mask, 0);
}
/*
@@ -61,7 +48,7 @@ static inline void await_bits_clear(u32 *reg, u32 mask)
*/
static inline void await_bits_set(u32 *reg, u32 mask)
{
- await_completion(reg, mask, mask);
+ mctl_await_completion(reg, mask, mask);
}
/*
diff --git a/arch/arm/cpu/armv7/sunxi/dram_sun6i.c b/arch/arm/cpu/armv7/sunxi/dram_sun6i.c
index 699173c..5dbbf61 100644
--- a/arch/arm/cpu/armv7/sunxi/dram_sun6i.c
+++ b/arch/arm/cpu/armv7/sunxi/dram_sun6i.c
@@ -17,9 +17,7 @@
#include <asm/arch/dram.h>
#include <asm/arch/prcm.h>
-/* DRAM clk & zq defaults, maybe turn these into Kconfig options ? */
-#define DRAM_CLK_DEFAULT 312000000
-#define DRAM_ZQ_DEFAULT 0x78
+#define DRAM_CLK (CONFIG_DRAM_CLK * 1000000)
struct dram_sun6i_para {
u8 bus_width;
@@ -29,31 +27,18 @@ struct dram_sun6i_para {
u16 page_size;
};
-/*
- * Wait up to 1s for value to be set in given part of reg.
- */
-static void await_completion(u32 *reg, u32 mask, u32 val)
-{
- unsigned long tmo = timer_get_us() + 1000000;
-
- while ((readl(reg) & mask) != val) {
- if (timer_get_us() > tmo)
- panic("Timeout initialising DRAM\n");
- }
-}
-
static void mctl_sys_init(void)
{
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
const int dram_clk_div = 2;
- clock_set_pll5(DRAM_CLK_DEFAULT * dram_clk_div);
+ clock_set_pll5(DRAM_CLK * dram_clk_div, false);
clrsetbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_DIV0_MASK,
CCM_DRAMCLK_CFG_DIV0(dram_clk_div) | CCM_DRAMCLK_CFG_RST |
CCM_DRAMCLK_CFG_UPD);
- await_completion(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_UPD, 0);
+ mctl_await_completion(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_UPD, 0);
writel(MDFS_CLK_DEFAULT, &ccm->mdfs_clk_cfg);
@@ -109,8 +94,8 @@ static bool mctl_rank_detect(u32 *gsr0, int rank)
const u32 done = MCTL_DX_GSR0_RANK0_TRAIN_DONE << rank;
const u32 err = MCTL_DX_GSR0_RANK0_TRAIN_ERR << rank;
- await_completion(gsr0, done, done);
- await_completion(gsr0 + 0x10, done, done);
+ mctl_await_completion(gsr0, done, done);
+ mctl_await_completion(gsr0 + 0x10, done, done);
return !(readl(gsr0) & err) && !(readl(gsr0 + 0x10) & err);
}
@@ -131,7 +116,7 @@ static void mctl_channel_init(int ch_index, struct dram_sun6i_para *para)
}
writel(MCTL_MCMD_NOP, &mctl_ctl->mcmd);
- await_completion(&mctl_ctl->mcmd, MCTL_MCMD_BUSY, 0);
+ mctl_await_completion(&mctl_ctl->mcmd, MCTL_MCMD_BUSY, 0);
/* PHY initialization */
writel(MCTL_PGCR, &mctl_phy->pgcr);
@@ -168,14 +153,14 @@ static void mctl_channel_init(int ch_index, struct dram_sun6i_para *para)
writel(MCTL_DX_GCR | MCTL_DX_GCR_EN, &mctl_phy->dx2gcr);
writel(MCTL_DX_GCR | MCTL_DX_GCR_EN, &mctl_phy->dx3gcr);
- await_completion(&mctl_phy->pgsr, 0x03, 0x03);
+ mctl_await_completion(&mctl_phy->pgsr, 0x03, 0x03);
- writel(DRAM_ZQ_DEFAULT, &mctl_phy->zq0cr1);
+ writel(CONFIG_DRAM_ZQ, &mctl_phy->zq0cr1);
setbits_le32(&mctl_phy->pir, MCTL_PIR_CLEAR_STATUS);
writel(MCTL_PIR_STEP1, &mctl_phy->pir);
udelay(10);
- await_completion(&mctl_phy->pgsr, 0x1f, 0x1f);
+ mctl_await_completion(&mctl_phy->pgsr, 0x1f, 0x1f);
/* rank detect */
if (!mctl_rank_detect(&mctl_phy->dx0gsr0, 1)) {
@@ -206,19 +191,19 @@ static void mctl_channel_init(int ch_index, struct dram_sun6i_para *para)
setbits_le32(&mctl_phy->pir, MCTL_PIR_CLEAR_STATUS);
writel(MCTL_PIR_STEP2, &mctl_phy->pir);
udelay(10);
- await_completion(&mctl_phy->pgsr, 0x11, 0x11);
+ mctl_await_completion(&mctl_phy->pgsr, 0x11, 0x11);
if (readl(&mctl_phy->pgsr) & MCTL_PGSR_TRAIN_ERR_MASK)
panic("Training error initialising DRAM\n");
/* Move to configure state */
writel(MCTL_SCTL_CONFIG, &mctl_ctl->sctl);
- await_completion(&mctl_ctl->sstat, 0x07, 0x01);
+ mctl_await_completion(&mctl_ctl->sstat, 0x07, 0x01);
/* Set number of clks per micro-second */
- writel(DRAM_CLK_DEFAULT / 1000000, &mctl_ctl->togcnt1u);
+ writel(DRAM_CLK / 1000000, &mctl_ctl->togcnt1u);
/* Set number of clks per 100 nano-seconds */
- writel(DRAM_CLK_DEFAULT / 10000000, &mctl_ctl->togcnt100n);
+ writel(DRAM_CLK / 10000000, &mctl_ctl->togcnt100n);
/* Set memory timing registers */
writel(MCTL_TREFI, &mctl_ctl->trefi);
writel(MCTL_TMRD, &mctl_ctl->tmrd);
@@ -272,7 +257,7 @@ static void mctl_channel_init(int ch_index, struct dram_sun6i_para *para)
/* Move to access state */
writel(MCTL_SCTL_ACCESS, &mctl_ctl->sctl);
- await_completion(&mctl_ctl->sstat, 0x07, 0x03);
+ mctl_await_completion(&mctl_ctl->sstat, 0x07, 0x03);
}
static void mctl_com_init(struct dram_sun6i_para *para)
@@ -341,20 +326,6 @@ static void mctl_port_cfg(void)
writel(0x00000307, &mctl_com->mbagcr[5]);
}
-static bool mctl_mem_matches(u32 offset)
-{
- const int match_count = 64;
- int i, matches = 0;
-
- for (i = 0; i < match_count; i++) {
- if (readl(CONFIG_SYS_SDRAM_BASE + i * 4) ==
- readl(CONFIG_SYS_SDRAM_BASE + offset + i * 4))
- matches++;
- }
-
- return matches == match_count;
-}
-
unsigned long sunxi_dram_init(void)
{
struct sunxi_mctl_com_reg * const mctl_com =
@@ -371,18 +342,26 @@ unsigned long sunxi_dram_init(void)
.rows = 16,
};
+ /* A31s only has one channel */
+ if (sunxi_get_ss_bonding_id() == SUNXI_SS_BOND_ID_A31S)
+ para.chan = 1;
+
mctl_sys_init();
mctl_dll_init(0, &para);
- mctl_dll_init(1, &para);
+ setbits_le32(&mctl_com->ccr, MCTL_CCR_CH0_CLK_EN);
+
+ if (para.chan == 2) {
+ mctl_dll_init(1, &para);
+ setbits_le32(&mctl_com->ccr, MCTL_CCR_CH1_CLK_EN);
+ }
- setbits_le32(&mctl_com->ccr,
- MCTL_CCR_MASTER_CLK_EN |
- MCTL_CCR_CH0_CLK_EN |
- MCTL_CCR_CH1_CLK_EN);
+ setbits_le32(&mctl_com->ccr, MCTL_CCR_MASTER_CLK_EN);
mctl_channel_init(0, &para);
- mctl_channel_init(1, &para);
+ if (para.chan == 2)
+ mctl_channel_init(1, &para);
+
mctl_com_init(&para);
mctl_port_cfg();
diff --git a/arch/arm/cpu/armv7/sunxi/dram_sun8i.c b/arch/arm/cpu/armv7/sunxi/dram_sun8i.c
new file mode 100644
index 0000000..3d7964d
--- /dev/null
+++ b/arch/arm/cpu/armv7/sunxi/dram_sun8i.c
@@ -0,0 +1,345 @@
+/*
+ * Sun8i platform dram controller init.
+ *
+ * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * Note this code uses a lot of magic hex values, that is because this code
+ * simply replays the init sequence as done by the Allwinner boot0 code, so
+ * we do not know what these values mean. There are no symbolic constants for
+ * these magic values, since we do not know how to name them and making up
+ * names for them is not useful.
+ *
+ * The register-layout of the sunxi_mctl_phy_reg-s looks a lot like the one
+ * found in the TI Keystone2 documentation:
+ * http://www.ti.com/lit/ug/spruhn7a/spruhn7a.pdf
+ * "Table4-2 DDR3 PHY Registers"
+ * This may be used as a (possible) reference for future work / cleanups.
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/dram.h>
+#include <asm/arch/prcm.h>
+
+static const struct dram_para dram_para = {
+ .clock = CONFIG_DRAM_CLK,
+ .type = 3,
+ .zq = CONFIG_DRAM_ZQ,
+ .odt_en = 1,
+ .para1 = 0, /* not used (only used when tpr13 bit 31 is set */
+ .para2 = 0, /* not used (only used when tpr13 bit 31 is set */
+ .mr0 = 6736,
+ .mr1 = 4,
+ .mr2 = 16,
+ .mr3 = 0,
+ /* tpr0 - 10 contain timing constants or-ed together in u32 vals */
+ .tpr0 = 0x2ab83def,
+ .tpr1 = 0x18082356,
+ .tpr2 = 0x00034156,
+ .tpr3 = 0x448c5533,
+ .tpr4 = 0x08010d00,
+ .tpr5 = 0x0340b20f,
+ .tpr6 = 0x20d118cc,
+ .tpr7 = 0x14062485,
+ .tpr8 = 0x220d1d52,
+ .tpr9 = 0x1e078c22,
+ .tpr10 = 0x3c,
+ .tpr11 = 0, /* not used */
+ .tpr12 = 0, /* not used */
+ .tpr13 = 0x30000,
+};
+
+static void mctl_sys_init(void)
+{
+ struct sunxi_ccm_reg * const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+
+ /* enable pll5, note the divide by 2 is deliberate! */
+ clock_set_pll5(dram_para.clock * 1000000 / 2,
+ dram_para.tpr13 & 0x40000);
+
+ /* deassert ahb mctl reset */
+ setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL);
+
+ /* enable ahb mctl clock */
+ setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL);
+}
+
+static void mctl_apply_odt_correction(u32 *reg, int correction)
+{
+ int val;
+
+ val = (readl(reg) >> 8) & 0xff;
+ val += correction;
+
+ /* clamp */
+ if (val < 0)
+ val = 0;
+ else if (val > 255)
+ val = 255;
+
+ clrsetbits_le32(reg, 0xff00, val << 8);
+}
+
+static void mctl_init(u32 *bus_width)
+{
+ struct sunxi_ccm_reg * const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ struct sunxi_mctl_com_reg * const mctl_com =
+ (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+ struct sunxi_mctl_phy_reg * const mctl_phy =
+ (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY0_BASE;
+ int correction;
+
+ if (dram_para.tpr13 & 0x20)
+ writel(0x40b, &mctl_phy->dcr);
+ else
+ writel(0x1000040b, &mctl_phy->dcr);
+
+ if (dram_para.clock >= 480)
+ writel(0x5c000, &mctl_phy->dllgcr);
+ else
+ writel(0xdc000, &mctl_phy->dllgcr);
+
+ writel(0x0a003e3f, &mctl_phy->pgcr0);
+ writel(0x03008421, &mctl_phy->pgcr1);
+
+ writel(dram_para.mr0, &mctl_phy->mr0);
+ writel(dram_para.mr1, &mctl_phy->mr1);
+ writel(dram_para.mr2, &mctl_phy->mr2);
+ writel(dram_para.mr3, &mctl_phy->mr3);
+
+ if (!(dram_para.tpr13 & 0x10000)) {
+ clrsetbits_le32(&mctl_phy->dx0gcr, 0x3800, 0x2000);
+ clrsetbits_le32(&mctl_phy->dx1gcr, 0x3800, 0x2000);
+ }
+
+ /*
+ * All the masking and shifting below converts what I assume are DDR
+ * timing constants from Allwinner dram_para tpr format to the actual
+ * timing registers format.
+ */
+
+ writel((dram_para.tpr0 & 0x000fffff), &mctl_phy->ptr2);
+ writel((dram_para.tpr1 & 0x1fffffff), &mctl_phy->ptr3);
+ writel((dram_para.tpr0 & 0x3ff00000) >> 2 |
+ (dram_para.tpr2 & 0x0003ffff), &mctl_phy->ptr4);
+
+ writel(dram_para.tpr3, &mctl_phy->dtpr0);
+ writel(dram_para.tpr4, &mctl_phy->dtpr2);
+
+ writel(0x01000081, &mctl_phy->dtcr);
+
+ if (dram_para.clock <= 240 || !(dram_para.odt_en & 0x01)) {
+ clrbits_le32(&mctl_phy->dx0gcr, 0x600);
+ clrbits_le32(&mctl_phy->dx1gcr, 0x600);
+ }
+ if (dram_para.clock <= 240) {
+ writel(0, &mctl_phy->odtcr);
+ writel(0, &mctl_ctl->odtmap);
+ }
+
+ writel(((dram_para.tpr5 & 0x0f00) << 12) |
+ ((dram_para.tpr5 & 0x00f8) << 9) |
+ ((dram_para.tpr5 & 0x0007) << 8),
+ &mctl_ctl->rfshctl0);
+
+ writel(((dram_para.tpr5 & 0x0003f000) << 12) |
+ ((dram_para.tpr5 & 0x00fc0000) >> 2) |
+ ((dram_para.tpr5 & 0x3f000000) >> 16) |
+ ((dram_para.tpr6 & 0x0000003f) >> 0),
+ &mctl_ctl->dramtmg0);
+
+ writel(((dram_para.tpr6 & 0x000007c0) << 10) |
+ ((dram_para.tpr6 & 0x0000f800) >> 3) |
+ ((dram_para.tpr6 & 0x003f0000) >> 16),
+ &mctl_ctl->dramtmg1);
+
+ writel(((dram_para.tpr6 & 0x0fc00000) << 2) |
+ ((dram_para.tpr7 & 0x0000001f) << 16) |
+ ((dram_para.tpr7 & 0x000003e0) << 3) |
+ ((dram_para.tpr7 & 0x0000fc00) >> 10),
+ &mctl_ctl->dramtmg2);
+
+ writel(((dram_para.tpr7 & 0x03ff0000) >> 16) |
+ ((dram_para.tpr6 & 0xf0000000) >> 16),
+ &mctl_ctl->dramtmg3);
+
+ writel(((dram_para.tpr7 & 0x3c000000) >> 2 ) |
+ ((dram_para.tpr8 & 0x00000007) << 16) |
+ ((dram_para.tpr8 & 0x00000038) << 5) |
+ ((dram_para.tpr8 & 0x000003c0) >> 6),
+ &mctl_ctl->dramtmg4);
+
+ writel(((dram_para.tpr8 & 0x00003c00) << 14) |
+ ((dram_para.tpr8 & 0x0003c000) << 2) |
+ ((dram_para.tpr8 & 0x00fc0000) >> 10) |
+ ((dram_para.tpr8 & 0x0f000000) >> 24),
+ &mctl_ctl->dramtmg5);
+
+ writel(0x00000008, &mctl_ctl->dramtmg8);
+
+ writel(((dram_para.tpr8 & 0xf0000000) >> 4) |
+ ((dram_para.tpr9 & 0x00007c00) << 6) |
+ ((dram_para.tpr9 & 0x000003e0) << 3) |
+ ((dram_para.tpr9 & 0x0000001f) >> 0),
+ &mctl_ctl->pitmg0);
+
+ setbits_le32(&mctl_ctl->pitmg1, 0x80000);
+
+ writel(((dram_para.tpr9 & 0x003f8000) << 9) | 0x2001,
+ &mctl_ctl->sched);
+
+ writel((dram_para.mr0 << 16) | dram_para.mr1, &mctl_ctl->init3);
+ writel((dram_para.mr2 << 16) | dram_para.mr3, &mctl_ctl->init4);
+
+ writel(0x00000000, &mctl_ctl->pimisc);
+ writel(0x80000000, &mctl_ctl->upd0);
+
+ writel(((dram_para.tpr9 & 0xffc00000) >> 22) |
+ ((dram_para.tpr10 & 0x00000fff) << 16),
+ &mctl_ctl->rfshtmg);
+
+ if (dram_para.tpr13 & 0x20)
+ writel(0x01040001, &mctl_ctl->mstr);
+ else
+ writel(0x01040401, &mctl_ctl->mstr);
+
+ if (!(dram_para.tpr13 & 0x20000)) {
+ writel(0x00000002, &mctl_ctl->pwrctl);
+ writel(0x00008001, &mctl_ctl->pwrtmg);
+ }
+
+ writel(0x00000001, &mctl_ctl->rfshctl3);
+ writel(0x00000001, &mctl_ctl->pimisc);
+
+ /* deassert dram_clk_cfg reset */
+ setbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_RST);
+
+ setbits_le32(&mctl_com->ccr, 0x80000);
+
+ /* zq stuff */
+ writel((dram_para.zq >> 8) & 0xff, &mctl_phy->zqcr1);
+
+ writel(0x00000003, &mctl_phy->pir);
+ udelay(10);
+ mctl_await_completion(&mctl_phy->pgsr0, 0x09, 0x09);
+
+ writel(readl(&mctl_phy->zqsr0) | 0x10000000, &mctl_phy->zqcr2);
+ writel(dram_para.zq & 0xff, &mctl_phy->zqcr1);
+
+ /* A23-v1.0 SDK uses 0xfdf3, A23-v2.0 SDK uses 0x5f3 */
+ writel(0x000005f3, &mctl_phy->pir);
+ udelay(10);
+ mctl_await_completion(&mctl_phy->pgsr0, 0x03, 0x03);
+
+ if (readl(&mctl_phy->dx1gsr0) & 0x1000000) {
+ *bus_width = 8;
+ writel(0, &mctl_phy->dx1gcr);
+ writel(dram_para.zq & 0xff, &mctl_phy->zqcr1);
+ writel(0x5f3, &mctl_phy->pir);
+ udelay(10000);
+ setbits_le32(&mctl_ctl->mstr, 0x1000);
+ } else
+ *bus_width = 16;
+
+ correction = (dram_para.odt_en >> 8) & 0xff;
+ if (correction) {
+ if (dram_para.odt_en & 0x80000000)
+ correction = -correction;
+
+ mctl_apply_odt_correction(&mctl_phy->dx0lcdlr1, correction);
+ mctl_apply_odt_correction(&mctl_phy->dx1lcdlr1, correction);
+ }
+
+ mctl_await_completion(&mctl_ctl->statr, 0x01, 0x01);
+
+ writel(0x08003e3f, &mctl_phy->pgcr0);
+ writel(0x00000000, &mctl_ctl->rfshctl3);
+}
+
+unsigned long sunxi_dram_init(void)
+{
+ struct sunxi_mctl_com_reg * const mctl_com =
+ (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
+ const u32 columns = 13;
+ u32 bus, bus_width, offset, page_size, rows;
+
+ mctl_sys_init();
+ mctl_init(&bus_width);
+
+ if (bus_width == 16) {
+ page_size = 8;
+ bus = 1;
+ } else {
+ page_size = 7;
+ bus = 0;
+ }
+
+ if (!(dram_para.tpr13 & 0x80000000)) {
+ /* Detect and set rows */
+ writel(0x000310f4 | MCTL_CR_PAGE_SIZE(page_size),
+ &mctl_com->cr);
+ setbits_le32(&mctl_com->swonr, 0x0003ffff);
+ for (rows = 11; rows < 16; rows++) {
+ offset = 1 << (rows + columns + bus);
+ if (mctl_mem_matches(offset))
+ break;
+ }
+ clrsetbits_le32(&mctl_com->cr, MCTL_CR_ROW_MASK,
+ MCTL_CR_ROW(rows));
+ } else {
+ rows = (dram_para.para1 >> 16) & 0xff;
+ writel(((dram_para.para2 & 0x000000f0) << 11) |
+ ((rows - 1) << 4) |
+ ((dram_para.para1 & 0x0f000000) >> 22) |
+ 0x31000 | MCTL_CR_PAGE_SIZE(page_size),
+ &mctl_com->cr);
+ setbits_le32(&mctl_com->swonr, 0x0003ffff);
+ }
+
+ /* Setup DRAM master priority? If this is left out things still work */
+ writel(0x00000008, &mctl_com->mcr0_0);
+ writel(0x0001000d, &mctl_com->mcr1_0);
+ writel(0x00000004, &mctl_com->mcr0_1);
+ writel(0x00000080, &mctl_com->mcr1_1);
+ writel(0x00000004, &mctl_com->mcr0_2);
+ writel(0x00000019, &mctl_com->mcr1_2);
+ writel(0x00000004, &mctl_com->mcr0_3);
+ writel(0x00000080, &mctl_com->mcr1_3);
+ writel(0x00000004, &mctl_com->mcr0_4);
+ writel(0x01010040, &mctl_com->mcr1_4);
+ writel(0x00000004, &mctl_com->mcr0_5);
+ writel(0x0001002f, &mctl_com->mcr1_5);
+ writel(0x00000004, &mctl_com->mcr0_6);
+ writel(0x00010020, &mctl_com->mcr1_6);
+ writel(0x00000004, &mctl_com->mcr0_7);
+ writel(0x00010020, &mctl_com->mcr1_7);
+ writel(0x00000008, &mctl_com->mcr0_8);
+ writel(0x00000001, &mctl_com->mcr1_8);
+ writel(0x00000008, &mctl_com->mcr0_9);
+ writel(0x00000005, &mctl_com->mcr1_9);
+ writel(0x00000008, &mctl_com->mcr0_10);
+ writel(0x00000003, &mctl_com->mcr1_10);
+ writel(0x00000008, &mctl_com->mcr0_11);
+ writel(0x00000005, &mctl_com->mcr1_11);
+ writel(0x00000008, &mctl_com->mcr0_12);
+ writel(0x00000003, &mctl_com->mcr1_12);
+ writel(0x00000008, &mctl_com->mcr0_13);
+ writel(0x00000004, &mctl_com->mcr1_13);
+ writel(0x00000008, &mctl_com->mcr0_14);
+ writel(0x00000002, &mctl_com->mcr1_14);
+ writel(0x00000008, &mctl_com->mcr0_15);
+ writel(0x00000003, &mctl_com->mcr1_15);
+ writel(0x00010138, &mctl_com->bwcr);
+
+ return 1 << (rows + columns + bus);
+}
diff --git a/arch/arm/cpu/armv7/sunxi/p2wi.c b/arch/arm/cpu/armv7/sunxi/p2wi.c
index 48613bd..26a9cfc 100644
--- a/arch/arm/cpu/armv7/sunxi/p2wi.c
+++ b/arch/arm/cpu/armv7/sunxi/p2wi.c
@@ -26,13 +26,13 @@
void p2wi_init(void)
{
- struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUNXI_P2WI_BASE;
+ struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE;
/* Enable p2wi and PIO clk, and de-assert their resets */
prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_P2WI);
- sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUNXI_GPL0_R_P2WI_SCK);
- sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUNXI_GPL1_R_P2WI_SDA);
+ sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUN6I_GPL0_R_P2WI_SCK);
+ sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUN6I_GPL1_R_P2WI_SDA);
/* Reset p2wi controller and set clock to CLKIN(12)/8 = 1.5 MHz */
writel(P2WI_CTRL_RESET, &p2wi->ctrl);
@@ -43,7 +43,7 @@ void p2wi_init(void)
int p2wi_change_to_p2wi_mode(u8 slave_addr, u8 ctrl_reg, u8 init_data)
{
- struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUNXI_P2WI_BASE;
+ struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE;
unsigned long tmo = timer_get_us() + 1000000;
writel(P2WI_PM_DEV_ADDR(slave_addr) |
@@ -62,7 +62,7 @@ int p2wi_change_to_p2wi_mode(u8 slave_addr, u8 ctrl_reg, u8 init_data)
static int p2wi_await_trans(void)
{
- struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUNXI_P2WI_BASE;
+ struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE;
unsigned long tmo = timer_get_us() + 1000000;
int ret;
u8 reg;
@@ -88,7 +88,7 @@ static int p2wi_await_trans(void)
int p2wi_read(const u8 addr, u8 *data)
{
- struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUNXI_P2WI_BASE;
+ struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE;
int ret;
writel(P2WI_DATADDR_BYTE_1(addr), &p2wi->dataddr0);
@@ -105,7 +105,7 @@ int p2wi_read(const u8 addr, u8 *data)
int p2wi_write(const u8 addr, u8 data)
{
- struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUNXI_P2WI_BASE;
+ struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE;
writel(P2WI_DATADDR_BYTE_1(addr), &p2wi->dataddr0);
writel(P2WI_DATA_BYTE_1(data), &p2wi->data0);
diff --git a/arch/arm/cpu/armv7/sunxi/psci.S b/arch/arm/cpu/armv7/sunxi/psci.S
index b9ea78b..5be497b 100644
--- a/arch/arm/cpu/armv7/sunxi/psci.S
+++ b/arch/arm/cpu/armv7/sunxi/psci.S
@@ -18,6 +18,7 @@
*/
#include <config.h>
+#include <asm/gic.h>
#include <asm/psci.h>
#include <asm/arch/cpu.h>
@@ -38,6 +39,8 @@
#define ONE_MS (CONFIG_SYS_CLK_FREQ / 1000)
#define TEN_MS (10 * ONE_MS)
+#define GICD_BASE 0x1c81000
+#define GICC_BASE 0x1c82000
.macro timer_wait reg, ticks
@ Program CNTP_TVAL
@@ -59,25 +62,77 @@
isb
.endm
-.globl psci_arch_init
-psci_arch_init:
- mrc p15, 0, r5, c1, c1, 0 @ Read SCR
- bic r5, r5, #1 @ Secure mode
- mcr p15, 0, r5, c1, c1, 0 @ Write SCR
+.globl psci_fiq_enter
+psci_fiq_enter:
+ push {r0-r12}
+
+ @ Switch to secure
+ mrc p15, 0, r7, c1, c1, 0
+ bic r8, r7, #1
+ mcr p15, 0, r8, c1, c1, 0
isb
- mrc p15, 0, r4, c0, c0, 5 @ MPIDR
- and r4, r4, #3 @ cpu number in cluster
- mov r5, #400 @ 1kB of stack per CPU
- mul r4, r4, r5
+ @ Validate reason based on IAR and acknowledge
+ movw r8, #(GICC_BASE & 0xffff)
+ movt r8, #(GICC_BASE >> 16)
+ ldr r9, [r8, #GICC_IAR]
+ movw r10, #0x3ff
+ movt r10, #0
+ cmp r9, r10 @ skip spurious interrupt 1023
+ beq out
+ movw r10, #0x3fe @ ...and 1022
+ cmp r9, r10
+ beq out
+ str r9, [r8, #GICC_EOIR] @ acknowledge the interrupt
+ dsb
- adr r5, text_end @ end of text
- add r5, r5, #0x2000 @ Skip two pages
- lsr r5, r5, #12 @ Align to start of page
- lsl r5, r5, #12
- sub sp, r5, r4 @ here's our stack!
+ @ Compute CPU number
+ lsr r9, r9, #10
+ and r9, r9, #0xf
- bx lr
+ movw r8, #(SUN7I_CPUCFG_BASE & 0xffff)
+ movt r8, #(SUN7I_CPUCFG_BASE >> 16)
+
+ @ Wait for the core to enter WFI
+ lsl r11, r9, #6 @ x64
+ add r11, r11, r8
+
+1: ldr r10, [r11, #0x48]
+ tst r10, #(1 << 2)
+ bne 2f
+ timer_wait r10, ONE_MS
+ b 1b
+
+ @ Reset CPU
+2: mov r10, #0
+ str r10, [r11, #0x40]
+
+ @ Lock CPU
+ mov r10, #1
+ lsl r9, r10, r9 @ r9 is now CPU mask
+ ldr r10, [r8, #0x1e4]
+ bic r10, r10, r9
+ str r10, [r8, #0x1e4]
+
+ @ Set power gating
+ ldr r10, [r8, #0x1b4]
+ orr r10, r10, #1
+ str r10, [r8, #0x1b4]
+ timer_wait r10, ONE_MS
+
+ @ Activate power clamp
+ mov r10, #1
+1: str r10, [r8, #0x1b0]
+ lsl r10, r10, #1
+ orr r10, r10, #1
+ tst r10, #0x100
+ beq 1b
+
+ @ Restore security level
+out: mcr p15, 0, r7, c1, c1, 0
+
+ pop {r0-r12}
+ subs pc, lr, #4
@ r1 = target CPU
@ r2 = target PC
@@ -144,6 +199,53 @@ psci_cpu_on:
_target_pc:
.word 0
+/* Imported from Linux kernel */
+v7_flush_dcache_all:
+ dmb @ ensure ordering with previous memory accesses
+ mrc p15, 1, r0, c0, c0, 1 @ read clidr
+ ands r3, r0, #0x7000000 @ extract loc from clidr
+ mov r3, r3, lsr #23 @ left align loc bit field
+ beq finished @ if loc is 0, then no need to clean
+ mov r10, #0 @ start clean at cache level 0
+flush_levels:
+ add r2, r10, r10, lsr #1 @ work out 3x current cache level
+ mov r1, r0, lsr r2 @ extract cache type bits from clidr
+ and r1, r1, #7 @ mask of the bits for current cache only
+ cmp r1, #2 @ see what cache we have at this level
+ blt skip @ skip if no cache, or just i-cache
+ mrs r9, cpsr @ make cssr&csidr read atomic
+ mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
+ isb @ isb to sych the new cssr&csidr
+ mrc p15, 1, r1, c0, c0, 0 @ read the new csidr
+ msr cpsr_c, r9
+ and r2, r1, #7 @ extract the length of the cache lines
+ add r2, r2, #4 @ add 4 (line length offset)
+ ldr r4, =0x3ff
+ ands r4, r4, r1, lsr #3 @ find maximum number on the way size
+ clz r5, r4 @ find bit position of way size increment
+ ldr r7, =0x7fff
+ ands r7, r7, r1, lsr #13 @ extract max number of the index size
+loop1:
+ mov r9, r7 @ create working copy of max index
+loop2:
+ orr r11, r10, r4, lsl r5 @ factor way and cache number into r11
+ orr r11, r11, r9, lsl r2 @ factor index number into r11
+ mcr p15, 0, r11, c7, c14, 2 @ clean & invalidate by set/way
+ subs r9, r9, #1 @ decrement the index
+ bge loop2
+ subs r4, r4, #1 @ decrement the way
+ bge loop1
+skip:
+ add r10, r10, #2 @ increment cache number
+ cmp r3, r10
+ bgt flush_levels
+finished:
+ mov r10, #0 @ swith back to cache level 0
+ mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
+ dsb st
+ isb
+ bx lr
+
_sunxi_cpu_entry:
@ Set SMP bit
mrc p15, 0, r0, c1, c0, 1
@@ -158,5 +260,74 @@ _sunxi_cpu_entry:
ldr r0, [r0]
b _do_nonsec_entry
+.globl psci_cpu_off
+psci_cpu_off:
+ mrc p15, 0, r0, c1, c0, 0 @ SCTLR
+ bic r0, r0, #(1 << 2) @ Clear C bit
+ mcr p15, 0, r0, c1, c0, 0 @ SCTLR
+ isb
+ dsb
+
+ bl v7_flush_dcache_all
+
+ clrex @ Why???
+
+ mrc p15, 0, r0, c1, c0, 1 @ ACTLR
+ bic r0, r0, #(1 << 6) @ Clear SMP bit
+ mcr p15, 0, r0, c1, c0, 1 @ ACTLR
+ isb
+ dsb
+
+ @ Ask CPU0 to pull the rug...
+ movw r0, #(GICD_BASE & 0xffff)
+ movt r0, #(GICD_BASE >> 16)
+ movw r1, #15 @ SGI15
+ movt r1, #1 @ Target is CPU0
+ str r1, [r0, #GICD_SGIR]
+ dsb
+
+1: wfi
+ b 1b
+
+.globl psci_arch_init
+psci_arch_init:
+ movw r4, #(GICD_BASE & 0xffff)
+ movt r4, #(GICD_BASE >> 16)
+
+ ldr r5, [r4, #GICD_IGROUPRn]
+ bic r5, r5, #(1 << 15) @ SGI15 as Group-0
+ str r5, [r4, #GICD_IGROUPRn]
+
+ mov r5, #0 @ Set SGI15 priority to 0
+ strb r5, [r4, #(GICD_IPRIORITYRn + 15)]
+
+ add r4, r4, #0x1000 @ GICC address
+
+ mov r5, #0xff
+ str r5, [r4, #GICC_PMR] @ Be cool with non-secure
+
+ ldr r5, [r4, #GICC_CTLR]
+ orr r5, r5, #(1 << 3) @ Switch FIQEn on
+ str r5, [r4, #GICC_CTLR]
+
+ mrc p15, 0, r5, c1, c1, 0 @ Read SCR
+ orr r5, r5, #4 @ Enable FIQ in monitor mode
+ bic r5, r5, #1 @ Secure mode
+ mcr p15, 0, r5, c1, c1, 0 @ Write SCR
+ isb
+
+ mrc p15, 0, r4, c0, c0, 5 @ MPIDR
+ and r4, r4, #3 @ cpu number in cluster
+ mov r5, #0x400 @ 1kB of stack per CPU
+ mul r4, r4, r5
+
+ adr r5, text_end @ end of text
+ add r5, r5, #0x2000 @ Skip two pages
+ lsr r5, r5, #12 @ Align to start of page
+ lsl r5, r5, #12
+ sub sp, r5, r4 @ here's our stack!
+
+ bx lr
+
text_end:
.popsection
diff --git a/arch/arm/cpu/armv7/sunxi/rsb.c b/arch/arm/cpu/armv7/sunxi/rsb.c
new file mode 100644
index 0000000..b72bb9d
--- /dev/null
+++ b/arch/arm/cpu/armv7/sunxi/rsb.c
@@ -0,0 +1,158 @@
+/*
+ * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Based on allwinner u-boot sources rsb code which is:
+ * (C) Copyright 2007-2013
+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
+ * lixiang <lixiang@allwinnertech.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/prcm.h>
+#include <asm/arch/rsb.h>
+
+static void rsb_cfg_io(void)
+{
+ sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUN8I_GPL0_R_RSB_SCK);
+ sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUN8I_GPL1_R_RSB_SDA);
+ sunxi_gpio_set_pull(SUNXI_GPL(0), 1);
+ sunxi_gpio_set_pull(SUNXI_GPL(1), 1);
+ sunxi_gpio_set_drv(SUNXI_GPL(0), 2);
+ sunxi_gpio_set_drv(SUNXI_GPL(1), 2);
+}
+
+static void rsb_set_clk(void)
+{
+ struct sunxi_rsb_reg * const rsb =
+ (struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
+ u32 div = 0;
+ u32 cd_odly = 0;
+
+ /* Source is Hosc24M, set RSB clk to 3Mhz */
+ div = 24000000 / 3000000 / 2 - 1;
+ cd_odly = div >> 1;
+ if (!cd_odly)
+ cd_odly = 1;
+
+ writel((cd_odly << 8) | div, &rsb->ccr);
+}
+
+void rsb_init(void)
+{
+ struct sunxi_rsb_reg * const rsb =
+ (struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
+
+ rsb_cfg_io();
+
+ /* Enable RSB and PIO clk, and de-assert their resets */
+ prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_RSB);
+
+ writel(RSB_CTRL_SOFT_RST, &rsb->ctrl);
+ rsb_set_clk();
+}
+
+static int rsb_await_trans(void)
+{
+ struct sunxi_rsb_reg * const rsb =
+ (struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
+ unsigned long tmo = timer_get_us() + 1000000;
+ u32 stat;
+ int ret;
+
+ while (1) {
+ stat = readl(&rsb->stat);
+ if (stat & RSB_STAT_LBSY_INT) {
+ ret = -EBUSY;
+ break;
+ }
+ if (stat & RSB_STAT_TERR_INT) {
+ ret = -EIO;
+ break;
+ }
+ if (stat & RSB_STAT_TOVER_INT) {
+ ret = 0;
+ break;
+ }
+ if (timer_get_us() > tmo) {
+ ret = -ETIME;
+ break;
+ }
+ }
+ writel(stat, &rsb->stat); /* Clear status bits */
+
+ return ret;
+}
+
+int rsb_set_device_mode(u32 device_mode_data)
+{
+ struct sunxi_rsb_reg * const rsb =
+ (struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
+ unsigned long tmo = timer_get_us() + 1000000;
+
+ writel(RSB_DMCR_DEVICE_MODE_START | device_mode_data, &rsb->dmcr);
+
+ while (readl(&rsb->dmcr) & RSB_DMCR_DEVICE_MODE_START) {
+ if (timer_get_us() > tmo)
+ return -ETIME;
+ }
+
+ return rsb_await_trans();
+}
+
+static int rsb_do_trans(void)
+{
+ struct sunxi_rsb_reg * const rsb =
+ (struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
+
+ setbits_le32(&rsb->ctrl, RSB_CTRL_START_TRANS);
+ return rsb_await_trans();
+}
+
+int rsb_set_device_address(u16 device_addr, u16 runtime_addr)
+{
+ struct sunxi_rsb_reg * const rsb =
+ (struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
+
+ writel(RSB_DEVADDR_RUNTIME_ADDR(runtime_addr) |
+ RSB_DEVADDR_DEVICE_ADDR(device_addr), &rsb->devaddr);
+ writel(RSB_CMD_SET_RTSADDR, &rsb->cmd);
+
+ return rsb_do_trans();
+}
+
+int rsb_write(const u16 runtime_device_addr, const u8 reg_addr, u8 data)
+{
+ struct sunxi_rsb_reg * const rsb =
+ (struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
+
+ writel(RSB_DEVADDR_RUNTIME_ADDR(runtime_device_addr), &rsb->devaddr);
+ writel(reg_addr, &rsb->addr);
+ writel(data, &rsb->data);
+ writel(RSB_CMD_BYTE_WRITE, &rsb->cmd);
+
+ return rsb_do_trans();
+}
+
+int rsb_read(const u16 runtime_device_addr, const u8 reg_addr, u8 *data)
+{
+ struct sunxi_rsb_reg * const rsb =
+ (struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
+ int ret;
+
+ writel(RSB_DEVADDR_RUNTIME_ADDR(runtime_device_addr), &rsb->devaddr);
+ writel(reg_addr, &rsb->addr);
+ writel(RSB_CMD_BYTE_READ, &rsb->cmd);
+
+ ret = rsb_do_trans();
+ if (ret)
+ return ret;
+
+ *data = readl(&rsb->data) & 0xff;
+
+ return 0;
+}
diff --git a/arch/arm/cpu/armv7/sunxi/usbc.c b/arch/arm/cpu/armv7/sunxi/usbc.c
new file mode 100644
index 0000000..14de9f9
--- /dev/null
+++ b/arch/arm/cpu/armv7/sunxi/usbc.c
@@ -0,0 +1,272 @@
+/*
+ * Sunxi usb-controller code shared between the ehci and musb controllers
+ *
+ * Copyright (C) 2014 Roman Byshko
+ *
+ * Roman Byshko <rbyshko@gmail.com>
+ *
+ * Based on code from
+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/usbc.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <common.h>
+#ifdef CONFIG_AXP152_POWER
+#include <axp152.h>
+#endif
+#ifdef CONFIG_AXP209_POWER
+#include <axp209.h>
+#endif
+#ifdef CONFIG_AXP221_POWER
+#include <axp221.h>
+#endif
+
+#define SUNXI_USB_PMU_IRQ_ENABLE 0x800
+#define SUNXI_USB_CSR 0x404
+#define SUNXI_USB_PASSBY_EN 1
+
+#define SUNXI_EHCI_AHB_ICHR8_EN (1 << 10)
+#define SUNXI_EHCI_AHB_INCR4_BURST_EN (1 << 9)
+#define SUNXI_EHCI_AHB_INCRX_ALIGN_EN (1 << 8)
+#define SUNXI_EHCI_ULPI_BYPASS_EN (1 << 0)
+
+static struct sunxi_usbc_hcd {
+ struct usb_hcd *hcd;
+ int usb_rst_mask;
+ int ahb_clk_mask;
+ int gpio_vbus;
+ int irq;
+ int id;
+} sunxi_usbc_hcd[] = {
+ {
+ .usb_rst_mask = CCM_USB_CTRL_PHY0_RST | CCM_USB_CTRL_PHY0_CLK,
+ .ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB0,
+#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+ .irq = 71,
+#else
+ .irq = 38,
+#endif
+ .id = 0,
+ },
+ {
+ .usb_rst_mask = CCM_USB_CTRL_PHY1_RST | CCM_USB_CTRL_PHY1_CLK,
+ .ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0,
+#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+ .irq = 72,
+#else
+ .irq = 39,
+#endif
+ .id = 1,
+ },
+#if (CONFIG_USB_MAX_CONTROLLER_COUNT > 1)
+ {
+ .usb_rst_mask = CCM_USB_CTRL_PHY2_RST | CCM_USB_CTRL_PHY2_CLK,
+ .ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI1,
+#ifdef CONFIG_MACH_SUN6I
+ .irq = 74,
+#else
+ .irq = 40,
+#endif
+ .id = 2,
+ }
+#endif
+};
+
+static int enabled_hcd_count;
+
+static bool use_axp_drivebus(int index)
+{
+ return index == 0 &&
+ strcmp(CONFIG_USB0_VBUS_PIN, "axp_drivebus") == 0;
+}
+
+void *sunxi_usbc_get_io_base(int index)
+{
+ switch (index) {
+ case 0:
+ return (void *)SUNXI_USB0_BASE;
+ case 1:
+ return (void *)SUNXI_USB1_BASE;
+ case 2:
+ return (void *)SUNXI_USB2_BASE;
+ default:
+ return NULL;
+ }
+}
+
+static int get_vbus_gpio(int index)
+{
+ if (use_axp_drivebus(index))
+ return -1;
+
+ switch (index) {
+ case 0: return sunxi_name_to_gpio(CONFIG_USB0_VBUS_PIN);
+ case 1: return sunxi_name_to_gpio(CONFIG_USB1_VBUS_PIN);
+ case 2: return sunxi_name_to_gpio(CONFIG_USB2_VBUS_PIN);
+ }
+ return -1;
+}
+
+static void usb_phy_write(struct sunxi_usbc_hcd *sunxi_usbc, int addr,
+ int data, int len)
+{
+ int j = 0, usbc_bit = 0;
+ void *dest = sunxi_usbc_get_io_base(0) + SUNXI_USB_CSR;
+
+ usbc_bit = 1 << (sunxi_usbc->id * 2);
+ for (j = 0; j < len; j++) {
+ /* set the bit address to be written */
+ clrbits_le32(dest, 0xff << 8);
+ setbits_le32(dest, (addr + j) << 8);
+
+ clrbits_le32(dest, usbc_bit);
+ /* set data bit */
+ if (data & 0x1)
+ setbits_le32(dest, 1 << 7);
+ else
+ clrbits_le32(dest, 1 << 7);
+
+ setbits_le32(dest, usbc_bit);
+
+ clrbits_le32(dest, usbc_bit);
+
+ data >>= 1;
+ }
+}
+
+static void sunxi_usb_phy_init(struct sunxi_usbc_hcd *sunxi_usbc)
+{
+ /* The following comments are machine
+ * translated from Chinese, you have been warned!
+ */
+
+ /* Regulation 45 ohms */
+ if (sunxi_usbc->id == 0)
+ usb_phy_write(sunxi_usbc, 0x0c, 0x01, 1);
+
+ /* adjust PHY's magnitude and rate */
+ usb_phy_write(sunxi_usbc, 0x20, 0x14, 5);
+
+ /* threshold adjustment disconnect */
+#if defined CONFIG_MACH_SUN4I || defined CONFIG_MACH_SUN6I
+ usb_phy_write(sunxi_usbc, 0x2a, 3, 2);
+#else
+ usb_phy_write(sunxi_usbc, 0x2a, 2, 2);
+#endif
+
+ return;
+}
+
+static void sunxi_usb_passby(struct sunxi_usbc_hcd *sunxi_usbc, int enable)
+{
+ unsigned long bits = 0;
+ void *addr = sunxi_usbc_get_io_base(sunxi_usbc->id) +
+ SUNXI_USB_PMU_IRQ_ENABLE;
+
+ bits = SUNXI_EHCI_AHB_ICHR8_EN |
+ SUNXI_EHCI_AHB_INCR4_BURST_EN |
+ SUNXI_EHCI_AHB_INCRX_ALIGN_EN |
+ SUNXI_EHCI_ULPI_BYPASS_EN;
+
+ if (enable)
+ setbits_le32(addr, bits);
+ else
+ clrbits_le32(addr, bits);
+
+ return;
+}
+
+int sunxi_usbc_request_resources(int index)
+{
+ struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+
+ sunxi_usbc->gpio_vbus = get_vbus_gpio(index);
+ if (sunxi_usbc->gpio_vbus != -1)
+ return gpio_request(sunxi_usbc->gpio_vbus, "usbc_vbus");
+
+ return 0;
+}
+
+int sunxi_usbc_free_resources(int index)
+{
+ struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+
+ if (sunxi_usbc->gpio_vbus != -1)
+ return gpio_free(sunxi_usbc->gpio_vbus);
+
+ return 0;
+}
+
+void sunxi_usbc_enable(int index)
+{
+ struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+
+ /* enable common PHY only once */
+ if (enabled_hcd_count == 0)
+ setbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE);
+
+ setbits_le32(&ccm->usb_clk_cfg, sunxi_usbc->usb_rst_mask);
+ setbits_le32(&ccm->ahb_gate0, sunxi_usbc->ahb_clk_mask);
+#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+ setbits_le32(&ccm->ahb_reset0_cfg, sunxi_usbc->ahb_clk_mask);
+#endif
+
+ sunxi_usb_phy_init(sunxi_usbc);
+
+ if (sunxi_usbc->id != 0)
+ sunxi_usb_passby(sunxi_usbc, SUNXI_USB_PASSBY_EN);
+
+ enabled_hcd_count++;
+}
+
+void sunxi_usbc_disable(int index)
+{
+ struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+
+ if (sunxi_usbc->id != 0)
+ sunxi_usb_passby(sunxi_usbc, !SUNXI_USB_PASSBY_EN);
+
+#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+ clrbits_le32(&ccm->ahb_reset0_cfg, sunxi_usbc->ahb_clk_mask);
+#endif
+ clrbits_le32(&ccm->ahb_gate0, sunxi_usbc->ahb_clk_mask);
+ clrbits_le32(&ccm->usb_clk_cfg, sunxi_usbc->usb_rst_mask);
+
+ /* disable common PHY only once, for the last enabled hcd */
+ if (enabled_hcd_count == 1)
+ clrbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE);
+
+ enabled_hcd_count--;
+}
+
+void sunxi_usbc_vbus_enable(int index)
+{
+ struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+
+#ifdef AXP_DRIVEBUS
+ if (use_axp_drivebus(index))
+ axp_drivebus_enable();
+#endif
+ if (sunxi_usbc->gpio_vbus != -1)
+ gpio_direction_output(sunxi_usbc->gpio_vbus, 1);
+}
+
+void sunxi_usbc_vbus_disable(int index)
+{
+ struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+
+#ifdef AXP_DRIVEBUS
+ if (use_axp_drivebus(index))
+ axp_drivebus_disable();
+#endif
+ if (sunxi_usbc->gpio_vbus != -1)
+ gpio_direction_output(sunxi_usbc->gpio_vbus, 0);
+}
generated by cgit v1.1 at 2024-09-13 11:03:51 +0000