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-rw-r--r--arch/arm/cpu/armv7/mx6/Makefile1
-rw-r--r--arch/arm/cpu/armv7/mx6/clock.c51
-rw-r--r--arch/arm/cpu/armv7/mx6/ddr.c8
-rw-r--r--arch/arm/cpu/armv7/mx6/mp.c87
-rw-r--r--arch/arm/cpu/armv7/mx6/soc.c36
-rw-r--r--arch/arm/cpu/armv7/sunxi/dram.c621
-rw-r--r--arch/arm/cpu/armv7/zynq/spl.c2
-rw-r--r--arch/arm/cpu/armv7/zynq/u-boot-spl.lds1
-rw-r--r--arch/arm/cpu/tegra-common/Makefile1
-rw-r--r--arch/arm/cpu/tegra-common/ap.c3
-rw-r--r--arch/arm/cpu/tegra-common/board.c18
-rw-r--r--arch/arm/cpu/tegra-common/vpr.c35
12 files changed, 579 insertions, 285 deletions
diff --git a/arch/arm/cpu/armv7/mx6/Makefile b/arch/arm/cpu/armv7/mx6/Makefile
index 6dc9f8e..bf6effc 100644
--- a/arch/arm/cpu/armv7/mx6/Makefile
+++ b/arch/arm/cpu/armv7/mx6/Makefile
@@ -10,3 +10,4 @@
obj-y := soc.o clock.o
obj-$(CONFIG_SPL_BUILD) += ddr.o
obj-$(CONFIG_SECURE_BOOT) += hab.o
+obj-$(CONFIG_MP) += mp.o
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index 7dd83ec..820b8d5 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -71,6 +71,24 @@ int enable_i2c_clk(unsigned char enable, unsigned i2c_num)
}
#endif
+/* spi_num can be from 0 - SPI_MAX_NUM */
+int enable_spi_clk(unsigned char enable, unsigned spi_num)
+{
+ u32 reg;
+ u32 mask;
+
+ if (spi_num > SPI_MAX_NUM)
+ return -EINVAL;
+
+ mask = MXC_CCM_CCGR_CG_MASK << (spi_num << 1);
+ reg = __raw_readl(&imx_ccm->CCGR1);
+ if (enable)
+ reg |= mask;
+ else
+ reg &= ~mask;
+ __raw_writel(reg, &imx_ccm->CCGR1);
+ return 0;
+}
static u32 decode_pll(enum pll_clocks pll, u32 infreq)
{
u32 div;
@@ -214,7 +232,7 @@ static u32 get_uart_clk(void)
u32 reg, uart_podf;
u32 freq = decode_pll(PLL_USBOTG, MXC_HCLK) / 6; /* static divider */
reg = __raw_readl(&imx_ccm->cscdr1);
-#ifdef CONFIG_MX6SL
+#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
if (reg & MXC_CCM_CSCDR1_UART_CLK_SEL)
freq = MXC_HCLK;
#endif
@@ -282,7 +300,7 @@ static u32 get_emi_slow_clk(void)
return root_freq / (emi_slow_podf + 1);
}
-#ifdef CONFIG_MX6SL
+#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
static u32 get_mmdc_ch0_clk(void)
{
u32 cbcmr = __raw_readl(&imx_ccm->cbcmr);
@@ -355,6 +373,27 @@ int enable_fec_anatop_clock(enum enet_freq freq)
reg &= ~BM_ANADIG_PLL_ENET_BYPASS;
writel(reg, &anatop->pll_enet);
+#ifdef CONFIG_MX6SX
+ /*
+ * Set enet ahb clock to 200MHz
+ * pll2_pfd2_396m-> ENET_PODF-> ENET_AHB
+ */
+ reg = readl(&imx_ccm->chsccdr);
+ reg &= ~(MXC_CCM_CHSCCDR_ENET_PRE_CLK_SEL_MASK
+ | MXC_CCM_CHSCCDR_ENET_PODF_MASK
+ | MXC_CCM_CHSCCDR_ENET_CLK_SEL_MASK);
+ /* PLL2 PFD2 */
+ reg |= (4 << MXC_CCM_CHSCCDR_ENET_PRE_CLK_SEL_OFFSET);
+ /* Div = 2*/
+ reg |= (1 << MXC_CCM_CHSCCDR_ENET_PODF_OFFSET);
+ reg |= (0 << MXC_CCM_CHSCCDR_ENET_CLK_SEL_OFFSET);
+ writel(reg, &imx_ccm->chsccdr);
+
+ /* Enable enet system clock */
+ reg = readl(&imx_ccm->CCGR3);
+ reg |= MXC_CCM_CCGR3_ENET_MASK;
+ writel(reg, &imx_ccm->CCGR3);
+#endif
return 0;
}
#endif
@@ -437,6 +476,7 @@ static int enable_enet_pll(uint32_t en)
return 0;
}
+#ifndef CONFIG_MX6SX
static void ungate_sata_clock(void)
{
struct mxc_ccm_reg *const imx_ccm =
@@ -445,6 +485,7 @@ static void ungate_sata_clock(void)
/* Enable SATA clock. */
setbits_le32(&imx_ccm->CCGR5, MXC_CCM_CCGR5_SATA_MASK);
}
+#endif
static void ungate_pcie_clock(void)
{
@@ -455,11 +496,13 @@ static void ungate_pcie_clock(void)
setbits_le32(&imx_ccm->CCGR4, MXC_CCM_CCGR4_PCIE_MASK);
}
+#ifndef CONFIG_MX6SX
int enable_sata_clock(void)
{
ungate_sata_clock();
return enable_enet_pll(BM_ANADIG_PLL_ENET_ENABLE_SATA);
}
+#endif
int enable_pcie_clock(void)
{
@@ -491,7 +534,9 @@ int enable_pcie_clock(void)
clrbits_le32(&ccm_regs->cbcmr, MXC_CCM_CBCMR_PCIE_AXI_CLK_SEL);
/* Party time! Ungate the clock to the PCIe. */
+#ifndef CONFIG_MX6SX
ungate_sata_clock();
+#endif
ungate_pcie_clock();
return enable_enet_pll(BM_ANADIG_PLL_ENET_ENABLE_SATA |
@@ -573,6 +618,7 @@ int do_mx6_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return 0;
}
+#ifndef CONFIG_MX6SX
void enable_ipu_clock(void)
{
struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
@@ -581,6 +627,7 @@ void enable_ipu_clock(void)
reg |= MXC_CCM_CCGR3_IPU1_IPU_MASK;
writel(reg, &mxc_ccm->CCGR3);
}
+#endif
/***************************************************/
U_BOOT_CMD(
diff --git a/arch/arm/cpu/armv7/mx6/ddr.c b/arch/arm/cpu/armv7/mx6/ddr.c
index 0434211..1ab69f6 100644
--- a/arch/arm/cpu/armv7/mx6/ddr.c
+++ b/arch/arm/cpu/armv7/mx6/ddr.c
@@ -197,6 +197,7 @@ void mx6_dram_cfg(const struct mx6_ddr_sysinfo *i,
u16 trcd, trc, tras, twr, tmrd, trtp, trp, twtr, trfc, txs, txpr;
u16 CS0_END;
u16 tdllk = 0x1ff; /* DLL locking time: 512 cycles (JEDEC DDR3) */
+ u8 coladdr;
int clkper; /* clock period in picoseconds */
int clock; /* clock freq in mHz */
int cs;
@@ -422,8 +423,13 @@ void mx6_dram_cfg(const struct mx6_ddr_sysinfo *i,
mmdc0->mdor = reg;
/* Step 5: Configure DDR physical parameters (density and burst len) */
+ coladdr = m->coladdr;
+ if (m->coladdr == 8) /* 8-bit COL is 0x3 */
+ coladdr += 4;
+ else if (m->coladdr == 12) /* 12-bit COL is 0x4 */
+ coladdr += 1;
reg = (m->rowaddr - 11) << 24 | /* ROW */
- (m->coladdr - 9) << 20 | /* COL */
+ (coladdr - 9) << 20 | /* COL */
(1 << 19) | /* Burst Length = 8 for DDR3 */
(i->dsize << 16); /* DDR data bus size */
mmdc0->mdctl = reg;
diff --git a/arch/arm/cpu/armv7/mx6/mp.c b/arch/arm/cpu/armv7/mx6/mp.c
new file mode 100644
index 0000000..9f034d6
--- /dev/null
+++ b/arch/arm/cpu/armv7/mx6/mp.c
@@ -0,0 +1,87 @@
+/*
+ * (C) Copyright 2014
+ * Gabriel Huau <contact@huau-gabriel.fr>
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/imx-regs.h>
+
+#define MAX_CPUS 4
+static struct src *src = (struct src *)SRC_BASE_ADDR;
+
+static uint32_t cpu_reset_mask[MAX_CPUS] = {
+ 0, /* We don't really want to modify the cpu0 */
+ SRC_SCR_CORE_1_RESET_MASK,
+ SRC_SCR_CORE_2_RESET_MASK,
+ SRC_SCR_CORE_3_RESET_MASK
+};
+
+static uint32_t cpu_ctrl_mask[MAX_CPUS] = {
+ 0, /* We don't really want to modify the cpu0 */
+ SRC_SCR_CORE_1_ENABLE_MASK,
+ SRC_SCR_CORE_2_ENABLE_MASK,
+ SRC_SCR_CORE_3_ENABLE_MASK
+};
+
+int cpu_reset(int nr)
+{
+ /* Software reset of the CPU N */
+ src->scr |= cpu_reset_mask[nr];
+ return 0;
+}
+
+int cpu_status(int nr)
+{
+ printf("core %d => %d\n", nr, !!(src->scr & cpu_ctrl_mask[nr]));
+ return 0;
+}
+
+int cpu_release(int nr, int argc, char *const argv[])
+{
+ uint32_t boot_addr;
+
+ boot_addr = simple_strtoul(argv[0], NULL, 16);
+
+ switch (nr) {
+ case 1:
+ src->gpr3 = boot_addr;
+ break;
+ case 2:
+ src->gpr5 = boot_addr;
+ break;
+ case 3:
+ src->gpr7 = boot_addr;
+ break;
+ default:
+ return 1;
+ }
+
+ /* CPU N is ready to start */
+ src->scr |= cpu_ctrl_mask[nr];
+
+ return 0;
+}
+
+int is_core_valid(unsigned int core)
+{
+ uint32_t nr_cores = get_nr_cpus();
+
+ if (core > nr_cores)
+ return 0;
+
+ return 1;
+}
+
+int cpu_disable(int nr)
+{
+ /* Disable the CPU N */
+ src->scr &= ~cpu_ctrl_mask[nr];
+ return 0;
+}
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index f20bdeb..ac84a1f 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -35,6 +35,12 @@ struct scu_regs {
u32 fpga_rev;
};
+u32 get_nr_cpus(void)
+{
+ struct scu_regs *scu = (struct scu_regs *)SCU_BASE_ADDR;
+ return readl(&scu->config) & 3;
+}
+
u32 get_cpu_rev(void)
{
struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
@@ -79,9 +85,15 @@ u32 __weak get_board_rev(void)
void init_aips(void)
{
struct aipstz_regs *aips1, *aips2;
+#ifdef CONFIG_MX6SX
+ struct aipstz_regs *aips3;
+#endif
aips1 = (struct aipstz_regs *)AIPS1_BASE_ADDR;
aips2 = (struct aipstz_regs *)AIPS2_BASE_ADDR;
+#ifdef CONFIG_MX6SX
+ aips3 = (struct aipstz_regs *)AIPS3_BASE_ADDR;
+#endif
/*
* Set all MPROTx to be non-bufferable, trusted for R/W,
@@ -107,6 +119,26 @@ void init_aips(void)
writel(0x00000000, &aips2->opacr2);
writel(0x00000000, &aips2->opacr3);
writel(0x00000000, &aips2->opacr4);
+
+#ifdef CONFIG_MX6SX
+ /*
+ * Set all MPROTx to be non-bufferable, trusted for R/W,
+ * not forced to user-mode.
+ */
+ writel(0x77777777, &aips3->mprot0);
+ writel(0x77777777, &aips3->mprot1);
+
+ /*
+ * Set all OPACRx to be non-bufferable, not require
+ * supervisor privilege level for access,allow for
+ * write access and untrusted master access.
+ */
+ writel(0x00000000, &aips3->opacr0);
+ writel(0x00000000, &aips3->opacr1);
+ writel(0x00000000, &aips3->opacr2);
+ writel(0x00000000, &aips3->opacr3);
+ writel(0x00000000, &aips3->opacr4);
+#endif
}
static void clear_ldo_ramp(void)
@@ -311,6 +343,10 @@ void s_init(void)
u32 mask480;
u32 mask528;
+
+ if (is_cpu_type(MXC_CPU_MX6SX))
+ return;
+
/* Due to hardware limitation, on MX6Q we need to gate/ungate all PFDs
* to make sure PFD is working right, otherwise, PFDs may
* not output clock after reset, MX6DL and MX6SL have added 396M pfd
diff --git a/arch/arm/cpu/armv7/sunxi/dram.c b/arch/arm/cpu/armv7/sunxi/dram.c
index 0f1ceec..584f742 100644
--- a/arch/arm/cpu/armv7/sunxi/dram.c
+++ b/arch/arm/cpu/armv7/sunxi/dram.c
@@ -36,18 +36,39 @@
#define CPU_CFG_CHIP_REV_B 0x3
/*
- * Wait up to 1s for mask to be clear in given reg.
+ * Wait up to 1s for value to be set in given part of reg.
*/
-static void await_completion(u32 *reg, u32 mask)
+static void await_completion(u32 *reg, u32 mask, u32 val)
{
unsigned long tmo = timer_get_us() + 1000000;
- while (readl(reg) & mask) {
+ 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);
+}
+
+/*
+ * Wait up to 1s for mask to be set in given reg.
+ */
+static inline void await_bits_set(u32 *reg, u32 mask)
+{
+ await_completion(reg, mask, mask);
+}
+
+/*
+ * This performs the external DRAM reset by driving the RESET pin low and
+ * then high again. According to the DDR3 spec, the RESET pin needs to be
+ * kept low for at least 200 us.
+ */
static void mctl_ddr3_reset(void)
{
struct sunxi_dram_reg *dram =
@@ -64,15 +85,28 @@ static void mctl_ddr3_reset(void)
if ((reg_val & CPU_CFG_CHIP_VER_MASK) !=
CPU_CFG_CHIP_VER(CPU_CFG_CHIP_REV_A)) {
setbits_le32(&dram->mcr, DRAM_MCR_RESET);
- udelay(2);
+ udelay(200);
clrbits_le32(&dram->mcr, DRAM_MCR_RESET);
} else
#endif
{
clrbits_le32(&dram->mcr, DRAM_MCR_RESET);
- udelay(2);
+ udelay(200);
setbits_le32(&dram->mcr, DRAM_MCR_RESET);
}
+ /* After the RESET pin is de-asserted, the DDR3 spec requires to wait
+ * for additional 500 us before driving the CKE pin (Clock Enable)
+ * high. The duration of this delay can be configured in the SDR_IDCR
+ * (Initialization Delay Configuration Register) and applied
+ * automatically by the DRAM controller during the DDR3 initialization
+ * step. But SDR_IDCR has limited range on sun4i/sun5i hardware and
+ * can't provide sufficient delay at DRAM clock frequencies higher than
+ * 524 MHz (while Allwinner A13 supports DRAM clock frequency up to
+ * 533 MHz according to the datasheet). Additionally, there is no
+ * official documentation for the SDR_IDCR register anywhere, and
+ * there is always a chance that we are interpreting it wrong.
+ * Better be safe than sorry, so add an explicit delay here. */
+ udelay(500);
}
static void mctl_set_drive(void)
@@ -102,6 +136,14 @@ static void mctl_itm_enable(void)
clrbits_le32(&dram->ccr, DRAM_CCR_ITM_OFF);
}
+static void mctl_itm_reset(void)
+{
+ mctl_itm_disable();
+ udelay(1); /* ITM reset needs a bit of delay */
+ mctl_itm_enable();
+ udelay(1);
+}
+
static void mctl_enable_dll0(u32 phase)
{
struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
@@ -118,23 +160,28 @@ static void mctl_enable_dll0(u32 phase)
udelay(22);
}
+/* Get the number of DDR byte lanes */
+static u32 mctl_get_number_of_lanes(void)
+{
+ struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
+ if ((readl(&dram->dcr) & DRAM_DCR_BUS_WIDTH_MASK) ==
+ DRAM_DCR_BUS_WIDTH(DRAM_DCR_BUS_WIDTH_32BIT))
+ return 4;
+ else
+ return 2;
+}
+
/*
* Note: This differs from pm/standby in that it checks the bus width
*/
static void mctl_enable_dllx(u32 phase)
{
struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
- u32 i, n, bus_width;
+ u32 i, number_of_lanes;
- bus_width = readl(&dram->dcr);
+ number_of_lanes = mctl_get_number_of_lanes();
- if ((bus_width & DRAM_DCR_BUS_WIDTH_MASK) ==
- DRAM_DCR_BUS_WIDTH(DRAM_DCR_BUS_WIDTH_32BIT))
- n = DRAM_DCR_NR_DLLCR_32BIT;
- else
- n = DRAM_DCR_NR_DLLCR_16BIT;
-
- for (i = 1; i < n; i++) {
+ for (i = 1; i <= number_of_lanes; i++) {
clrsetbits_le32(&dram->dllcr[i], 0xf << 14,
(phase & 0xf) << 14);
clrsetbits_le32(&dram->dllcr[i], DRAM_DLLCR_NRESET,
@@ -143,12 +190,12 @@ static void mctl_enable_dllx(u32 phase)
}
udelay(2);
- for (i = 1; i < n; i++)
+ for (i = 1; i <= number_of_lanes; i++)
clrbits_le32(&dram->dllcr[i], DRAM_DLLCR_NRESET |
DRAM_DLLCR_DISABLE);
udelay(22);
- for (i = 1; i < n; i++)
+ for (i = 1; i <= number_of_lanes; i++)
clrsetbits_le32(&dram->dllcr[i], DRAM_DLLCR_DISABLE,
DRAM_DLLCR_NRESET);
udelay(22);
@@ -201,11 +248,20 @@ static void mctl_configure_hostport(void)
writel(hpcr_value[i], &dram->hpcr[i]);
}
-static void mctl_setup_dram_clock(u32 clk)
+static void mctl_setup_dram_clock(u32 clk, u32 mbus_clk)
{
u32 reg_val;
struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ /* PLL5P and PLL6 are the potential clock sources for MBUS */
+ u32 pll6x_div, pll5p_div;
+ u32 pll6x_clk = clock_get_pll6() / 1000000;
+ u32 pll5p_clk = clk / 24 * 48;
+ u32 pll5p_rate, pll6x_rate;
+#ifdef CONFIG_SUN7I
+ pll6x_clk *= 2; /* sun7i uses PLL6*2, sun5i uses just PLL6 */
+#endif
+
/* setup DRAM PLL */
reg_val = readl(&ccm->pll5_cfg);
reg_val &= ~CCM_PLL5_CTRL_M_MASK; /* set M to 0 (x1) */
@@ -213,41 +269,40 @@ static void mctl_setup_dram_clock(u32 clk)
reg_val &= ~CCM_PLL5_CTRL_N_MASK; /* set N to 0 (x0) */
reg_val &= ~CCM_PLL5_CTRL_P_MASK; /* set P to 0 (x1) */
if (clk >= 540 && clk < 552) {
- /* dram = 540MHz, pll5p = 540MHz */
+ /* dram = 540MHz, pll5p = 1080MHz */
+ pll5p_clk = 1080;
reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2));
reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(3));
reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(15));
- reg_val |= CCM_PLL5_CTRL_P(1);
} else if (clk >= 512 && clk < 528) {
- /* dram = 512MHz, pll5p = 384MHz */
+ /* dram = 512MHz, pll5p = 1536MHz */
+ pll5p_clk = 1536;
reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(3));
reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(4));
reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(16));
- reg_val |= CCM_PLL5_CTRL_P(2);
} else if (clk >= 496 && clk < 504) {
- /* dram = 496MHz, pll5p = 372MHz */
+ /* dram = 496MHz, pll5p = 1488MHz */
+ pll5p_clk = 1488;
reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(3));
reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(2));
reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(31));
- reg_val |= CCM_PLL5_CTRL_P(2);
} else if (clk >= 468 && clk < 480) {
- /* dram = 468MHz, pll5p = 468MHz */
+ /* dram = 468MHz, pll5p = 936MHz */
+ pll5p_clk = 936;
reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2));
reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(3));
reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(13));
- reg_val |= CCM_PLL5_CTRL_P(1);
} else if (clk >= 396 && clk < 408) {
- /* dram = 396MHz, pll5p = 396MHz */
+ /* dram = 396MHz, pll5p = 792MHz */
+ pll5p_clk = 792;
reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2));
reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(3));
reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(11));
- reg_val |= CCM_PLL5_CTRL_P(1);
} else {
/* any other frequency that is a multiple of 24 */
reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2));
reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(2));
reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(clk / 24));
- reg_val |= CCM_PLL5_CTRL_P(CCM_PLL5_CTRL_P_X(2));
}
reg_val &= ~CCM_PLL5_CTRL_VCO_GAIN; /* PLL VCO Gain off */
reg_val |= CCM_PLL5_CTRL_EN; /* PLL On */
@@ -264,20 +319,30 @@ static void mctl_setup_dram_clock(u32 clk)
clrbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_GPS);
#endif
-#if defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I)
/* setup MBUS clock */
- reg_val = CCM_MBUS_CTRL_GATE |
-#ifdef CONFIG_SUN7I
- CCM_MBUS_CTRL_CLK_SRC(CCM_MBUS_CTRL_CLK_SRC_PLL6) |
- CCM_MBUS_CTRL_N(CCM_MBUS_CTRL_N_X(2)) |
- CCM_MBUS_CTRL_M(CCM_MBUS_CTRL_M_X(2));
-#else /* defined(CONFIG_SUN5I) */
- CCM_MBUS_CTRL_CLK_SRC(CCM_MBUS_CTRL_CLK_SRC_PLL5) |
- CCM_MBUS_CTRL_N(CCM_MBUS_CTRL_N_X(1)) |
- CCM_MBUS_CTRL_M(CCM_MBUS_CTRL_M_X(2));
-#endif
+ if (!mbus_clk)
+ mbus_clk = 300;
+ pll6x_div = DIV_ROUND_UP(pll6x_clk, mbus_clk);
+ pll5p_div = DIV_ROUND_UP(pll5p_clk, mbus_clk);
+ pll6x_rate = pll6x_clk / pll6x_div;
+ pll5p_rate = pll5p_clk / pll5p_div;
+
+ if (pll6x_div <= 16 && pll6x_rate > pll5p_rate) {
+ /* use PLL6 as the MBUS clock source */
+ reg_val = CCM_MBUS_CTRL_GATE |
+ CCM_MBUS_CTRL_CLK_SRC(CCM_MBUS_CTRL_CLK_SRC_PLL6) |
+ CCM_MBUS_CTRL_N(CCM_MBUS_CTRL_N_X(1)) |
+ CCM_MBUS_CTRL_M(CCM_MBUS_CTRL_M_X(pll6x_div));
+ } else if (pll5p_div <= 16) {
+ /* use PLL5P as the MBUS clock source */
+ reg_val = CCM_MBUS_CTRL_GATE |
+ CCM_MBUS_CTRL_CLK_SRC(CCM_MBUS_CTRL_CLK_SRC_PLL5) |
+ CCM_MBUS_CTRL_N(CCM_MBUS_CTRL_N_X(1)) |
+ CCM_MBUS_CTRL_M(CCM_MBUS_CTRL_M_X(pll5p_div));
+ } else {
+ panic("Bad mbus_clk\n");
+ }
writel(reg_val, &ccm->mbus_clk_cfg);
-#endif
/*
* open DRAMC AHB & DLL register clock
@@ -299,19 +364,48 @@ static void mctl_setup_dram_clock(u32 clk)
udelay(22);
}
+/*
+ * The data from rslrX and rdgrX registers (X=rank) is stored
+ * in a single 32-bit value using the following format:
+ * bits [31:26] - DQS gating system latency for byte lane 3
+ * bits [25:24] - DQS gating phase select for byte lane 3
+ * bits [23:18] - DQS gating system latency for byte lane 2
+ * bits [17:16] - DQS gating phase select for byte lane 2
+ * bits [15:10] - DQS gating system latency for byte lane 1
+ * bits [ 9:8 ] - DQS gating phase select for byte lane 1
+ * bits [ 7:2 ] - DQS gating system latency for byte lane 0
+ * bits [ 1:0 ] - DQS gating phase select for byte lane 0
+ */
+static void mctl_set_dqs_gating_delay(int rank, u32 dqs_gating_delay)
+{
+ struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
+ u32 lane, number_of_lanes = mctl_get_number_of_lanes();
+ /* rank0 gating system latency (3 bits per lane: cycles) */
+ u32 slr = readl(rank == 0 ? &dram->rslr0 : &dram->rslr1);
+ /* rank0 gating phase select (2 bits per lane: 90, 180, 270, 360) */
+ u32 dgr = readl(rank == 0 ? &dram->rdgr0 : &dram->rdgr1);
+ for (lane = 0; lane < number_of_lanes; lane++) {
+ u32 tmp = dqs_gating_delay >> (lane * 8);
+ slr &= ~(7 << (lane * 3));
+ slr |= ((tmp >> 2) & 7) << (lane * 3);
+ dgr &= ~(3 << (lane * 2));
+ dgr |= (tmp & 3) << (lane * 2);
+ }
+ writel(slr, rank == 0 ? &dram->rslr0 : &dram->rslr1);
+ writel(dgr, rank == 0 ? &dram->rdgr0 : &dram->rdgr1);
+}
+
static int dramc_scan_readpipe(void)
{
struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
u32 reg_val;
/* data training trigger */
-#ifdef CONFIG_SUN7I
clrbits_le32(&dram->csr, DRAM_CSR_FAILED);
-#endif
setbits_le32(&dram->ccr, DRAM_CCR_DATA_TRAINING);
/* check whether data training process has completed */
- await_completion(&dram->ccr, DRAM_CCR_DATA_TRAINING);
+ await_bits_clear(&dram->ccr, DRAM_CCR_DATA_TRAINING);
/* check data training result */
reg_val = readl(&dram->csr);
@@ -321,117 +415,6 @@ static int dramc_scan_readpipe(void)
return 0;
}
-static int dramc_scan_dll_para(void)
-{
- struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
- const u32 dqs_dly[7] = {0x3, 0x2, 0x1, 0x0, 0xe, 0xd, 0xc};
- const u32 clk_dly[15] = {0x07, 0x06, 0x05, 0x04, 0x03,
- 0x02, 0x01, 0x00, 0x08, 0x10,
- 0x18, 0x20, 0x28, 0x30, 0x38};
- u32 clk_dqs_count[15];
- u32 dqs_i, clk_i, cr_i;
- u32 max_val, min_val;
- u32 dqs_index, clk_index;
-
- /* Find DQS_DLY Pass Count for every CLK_DLY */
- for (clk_i = 0; clk_i < 15; clk_i++) {
- clk_dqs_count[clk_i] = 0;
- clrsetbits_le32(&dram->dllcr[0], 0x3f << 6,
- (clk_dly[clk_i] & 0x3f) << 6);
- for (dqs_i = 0; dqs_i < 7; dqs_i++) {
- for (cr_i = 1; cr_i < 5; cr_i++) {
- clrsetbits_le32(&dram->dllcr[cr_i],
- 0x4f << 14,
- (dqs_dly[dqs_i] & 0x4f) << 14);
- }
- udelay(2);
- if (dramc_scan_readpipe() == 0)
- clk_dqs_count[clk_i]++;
- }
- }
- /* Test DQS_DLY Pass Count for every CLK_DLY from up to down */
- for (dqs_i = 15; dqs_i > 0; dqs_i--) {
- max_val = 15;
- min_val = 15;
- for (clk_i = 0; clk_i < 15; clk_i++) {
- if (clk_dqs_count[clk_i] == dqs_i) {
- max_val = clk_i;
- if (min_val == 15)
- min_val = clk_i;
- }
- }
- if (max_val < 15)
- break;
- }
-
- /* Check if Find a CLK_DLY failed */
- if (!dqs_i)
- goto fail;
-
- /* Find the middle index of CLK_DLY */
- clk_index = (max_val + min_val) >> 1;
- if ((max_val == (15 - 1)) && (min_val > 0))
- /* if CLK_DLY[MCTL_CLK_DLY_COUNT] is very good, then the middle
- * value can be more close to the max_val
- */
- clk_index = (15 + clk_index) >> 1;
- else if ((max_val < (15 - 1)) && (min_val == 0))
- /* if CLK_DLY[0] is very good, then the middle value can be more
- * close to the min_val
- */
- clk_index >>= 1;
- if (clk_dqs_count[clk_index] < dqs_i)
- clk_index = min_val;
-
- /* Find the middle index of DQS_DLY for the CLK_DLY got above, and Scan
- * read pipe again
- */
- clrsetbits_le32(&dram->dllcr[0], 0x3f << 6,
- (clk_dly[clk_index] & 0x3f) << 6);
- max_val = 7;
- min_val = 7;
- for (dqs_i = 0; dqs_i < 7; dqs_i++) {
- clk_dqs_count[dqs_i] = 0;
- for (cr_i = 1; cr_i < 5; cr_i++) {
- clrsetbits_le32(&dram->dllcr[cr_i],
- 0x4f << 14,
- (dqs_dly[dqs_i] & 0x4f) << 14);
- }
- udelay(2);
- if (dramc_scan_readpipe() == 0) {
- clk_dqs_count[dqs_i] = 1;
- max_val = dqs_i;
- if (min_val == 7)
- min_val = dqs_i;
- }
- }
-
- if (max_val < 7) {
- dqs_index = (max_val + min_val) >> 1;
- if ((max_val == (7-1)) && (min_val > 0))
- dqs_index = (7 + dqs_index) >> 1;
- else if ((max_val < (7-1)) && (min_val == 0))
- dqs_index >>= 1;
- if (!clk_dqs_count[dqs_index])
- dqs_index = min_val;
- for (cr_i = 1; cr_i < 5; cr_i++) {
- clrsetbits_le32(&dram->dllcr[cr_i],
- 0x4f << 14,
- (dqs_dly[dqs_index] & 0x4f) << 14);
- }
- udelay(2);
- return dramc_scan_readpipe();
- }
-
-fail:
- clrbits_le32(&dram->dllcr[0], 0x3f << 6);
- for (cr_i = 1; cr_i < 5; cr_i++)
- clrbits_le32(&dram->dllcr[cr_i], 0x4f << 14);
- udelay(2);
-
- return dramc_scan_readpipe();
-}
-
static void dramc_clock_output_en(u32 on)
{
#if defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I)
@@ -451,48 +434,164 @@ static void dramc_clock_output_en(u32 on)
#endif
}
-static const u16 tRFC_table[2][6] = {
- /* 256Mb 512Mb 1Gb 2Gb 4Gb 8Gb */
- /* DDR2 75ns 105ns 127.5ns 195ns 327.5ns invalid */
- { 77, 108, 131, 200, 336, 336 },
- /* DDR3 invalid 90ns 110ns 160ns 300ns 350ns */
- { 93, 93, 113, 164, 308, 359 }
+/* tRFC in nanoseconds for different densities (from the DDR3 spec) */
+static const u16 tRFC_DDR3_table[6] = {
+ /* 256Mb 512Mb 1Gb 2Gb 4Gb 8Gb */
+ 90, 90, 110, 160, 300, 350
};
-static void dramc_set_autorefresh_cycle(u32 clk, u32 type, u32 density)
+static void dramc_set_autorefresh_cycle(u32 clk, u32 density)
{
struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
u32 tRFC, tREFI;
- tRFC = (tRFC_table[type][density] * clk + 1023) >> 10;
+ tRFC = (tRFC_DDR3_table[density] * clk + 999) / 1000;
tREFI = (7987 * clk) >> 10; /* <= 7.8us */
writel(DRAM_DRR_TREFI(tREFI) | DRAM_DRR_TRFC(tRFC), &dram->drr);
}
-unsigned long dramc_init(struct dram_para *para)
+/* Calculate the value for A11, A10, A9 bits in MR0 (write recovery) */
+static u32 ddr3_write_recovery(u32 clk)
+{
+ u32 twr_ns = 15; /* DDR3 spec says that it is 15ns for all speed bins */
+ u32 twr_ck = (twr_ns * clk + 999) / 1000;
+ if (twr_ck < 5)
+ return 1;
+ else if (twr_ck <= 8)
+ return twr_ck - 4;
+ else if (twr_ck <= 10)
+ return 5;
+ else
+ return 6;
+}
+
+/*
+ * If the dram->ppwrsctl (SDR_DPCR) register has the lowest bit set to 1, this
+ * means that DRAM is currently in self-refresh mode and retaining the old
+ * data. Since we have no idea what to do in this situation yet, just set this
+ * register to 0 and initialize DRAM in the same way as on any normal reboot
+ * (discarding whatever was stored there).
+ *
+ * Note: on sun7i hardware, the highest 16 bits need to be set to 0x1651 magic
+ * value for this write operation to have any effect. On sun5i hadware this
+ * magic value is not necessary. And on sun4i hardware the writes to this
+ * register seem to have no effect at all.
+ */
+static void mctl_disable_power_save(void)
+{
+ struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
+ writel(0x16510000, &dram->ppwrsctl);
+}
+
+/*
+ * After the DRAM is powered up or reset, the DDR3 spec requires to wait at
+ * least 500 us before driving the CKE pin (Clock Enable) high. The dram->idct
+ * (SDR_IDCR) register appears to configure this delay, which gets applied
+ * right at the time when the DRAM initialization is activated in the
+ * 'mctl_ddr3_initialize' function.
+ */
+static void mctl_set_cke_delay(void)
+{
+ struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
+
+ /* The CKE delay is represented in DRAM clock cycles, multiplied by N
+ * (where N=2 for sun4i/sun5i and N=3 for sun7i). Here it is set to
+ * the maximum possible value 0x1ffff, just like in the Allwinner's
+ * boot0 bootloader. The resulting delay value is somewhere between
+ * ~0.4 ms (sun5i with 648 MHz DRAM clock speed) and ~1.1 ms (sun7i
+ * with 360 MHz DRAM clock speed). */
+ setbits_le32(&dram->idcr, 0x1ffff);
+}
+
+/*
+ * This triggers the DRAM initialization. It performs sending the mode registers
+ * to the DRAM among other things. Very likely the ZQCL command is also getting
+ * executed (to do the initial impedance calibration on the DRAM side of the
+ * wire). The memory controller and the PHY must be already configured before
+ * calling this function.
+ */
+static void mctl_ddr3_initialize(void)
+{
+ struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
+ setbits_le32(&dram->ccr, DRAM_CCR_INIT);
+ await_bits_clear(&dram->ccr, DRAM_CCR_INIT);
+}
+
+/*
+ * Perform impedance calibration on the DRAM controller side of the wire.
+ */
+static void mctl_set_impedance(u32 zq, u32 odt_en)
+{
+ struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
+ u32 reg_val;
+ u32 zprog = zq & 0xFF, zdata = (zq >> 8) & 0xFFFFF;
+
+#ifndef CONFIG_SUN7I
+ /* Appears that some kind of automatically initiated default
+ * ZQ calibration is already in progress at this point on sun4i/sun5i
+ * hardware, but not on sun7i. So it is reasonable to wait for its
+ * completion before doing anything else. */
+ await_bits_set(&dram->zqsr, DRAM_ZQSR_ZDONE);
+#endif
+
+ /* ZQ calibration is not really useful unless ODT is enabled */
+ if (!odt_en)
+ return;
+
+#ifdef CONFIG_SUN7I
+ /* Enabling ODT in SDR_IOCR on sun7i hardware results in a deadlock
+ * unless bit 24 is set in SDR_ZQCR1. Not much is known about the
+ * SDR_ZQCR1 register, but there are hints indicating that it might
+ * be related to periodic impedance re-calibration. This particular
+ * magic value is borrowed from the Allwinner boot0 bootloader, and
+ * using it helps to avoid troubles */
+ writel((1 << 24) | (1 << 1), &dram->zqcr1);
+#endif
+
+ /* Needed at least for sun5i, because it does not self clear there */
+ clrbits_le32(&dram->zqcr0, DRAM_ZQCR0_ZCAL);
+
+ if (zdata) {
+ /* Set the user supplied impedance data */
+ reg_val = DRAM_ZQCR0_ZDEN | zdata;
+ writel(reg_val, &dram->zqcr0);
+ /* no need to wait, this takes effect immediately */
+ } else {
+ /* Do the calibration using the external resistor */
+ reg_val = DRAM_ZQCR0_ZCAL | DRAM_ZQCR0_IMP_DIV(zprog);
+ writel(reg_val, &dram->zqcr0);
+ /* Wait for the new impedance configuration to settle */
+ await_bits_set(&dram->zqsr, DRAM_ZQSR_ZDONE);
+ }
+
+ /* Needed at least for sun5i, because it does not self clear there */
+ clrbits_le32(&dram->zqcr0, DRAM_ZQCR0_ZCAL);
+
+ /* Set I/O configure register */
+ writel(DRAM_IOCR_ODT_EN(odt_en), &dram->iocr);
+}
+
+static unsigned long dramc_init_helper(struct dram_para *para)
{
struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
u32 reg_val;
u32 density;
int ret_val;
- /* check input dram parameter structure */
- if (!para)
+ /*
+ * only single rank DDR3 is supported by this code even though the
+ * hardware can theoretically support DDR2 and up to two ranks
+ */
+ if (para->type != DRAM_MEMORY_TYPE_DDR3 || para->rank_num != 1)
return 0;
/* setup DRAM relative clock */
- mctl_setup_dram_clock(para->clock);
+ mctl_setup_dram_clock(para->clock, para->mbus_clock);
-#ifdef CONFIG_SUN5I
/* Disable any pad power save control */
- writel(0, &dram->ppwrsctl);
-#endif
+ mctl_disable_power_save();
- /* reset external DRAM */
-#ifndef CONFIG_SUN7I
- mctl_ddr3_reset();
-#endif
mctl_set_drive();
/* dram clock off */
@@ -507,9 +606,7 @@ unsigned long dramc_init(struct dram_para *para)
mctl_enable_dll0(para->tpr3);
/* configure external DRAM */
- reg_val = 0x0;
- if (para->type == DRAM_MEMORY_TYPE_DDR3)
- reg_val |= DRAM_DCR_TYPE_DDR3;
+ reg_val = DRAM_DCR_TYPE_DDR3;
reg_val |= DRAM_DCR_IO_WIDTH(para->io_width >> 3);
if (para->density == 256)
@@ -534,85 +631,41 @@ unsigned long dramc_init(struct dram_para *para)
reg_val |= DRAM_DCR_MODE(DRAM_DCR_MODE_INTERLEAVE);
writel(reg_val, &dram->dcr);
-#ifdef CONFIG_SUN7I
- setbits_le32(&dram->zqcr1, (0x1 << 24) | (0x1 << 1));
- if (para->tpr4 & 0x2)
- clrsetbits_le32(&dram->zqcr1, (0x1 << 24), (0x1 << 1));
dramc_clock_output_en(1);
-#endif
-#if (defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I))
- /* set odt impendance divide ratio */
- reg_val = ((para->zq) >> 8) & 0xfffff;
- reg_val |= ((para->zq) & 0xff) << 20;
- reg_val |= (para->zq) & 0xf0000000;
- writel(reg_val, &dram->zqcr0);
-#endif
+ mctl_set_impedance(para->zq, para->odt_en);
-#ifdef CONFIG_SUN7I
- /* Set CKE Delay to about 1ms */
- setbits_le32(&dram->idcr, 0x1ffff);
-#endif
+ mctl_set_cke_delay();
-#ifdef CONFIG_SUN7I
- if ((readl(&dram->ppwrsctl) & 0x1) != 0x1)
- mctl_ddr3_reset();
- else
- setbits_le32(&dram->mcr, DRAM_MCR_RESET);
-#else
- /* dram clock on */
- dramc_clock_output_en(1);
-#endif
+ mctl_ddr3_reset();
udelay(1);
- await_completion(&dram->ccr, DRAM_CCR_INIT);
+ await_bits_clear(&dram->ccr, DRAM_CCR_INIT);
mctl_enable_dllx(para->tpr3);
-#ifdef CONFIG_SUN4I
- /* set odt impedance divide ratio */
- reg_val = ((para->zq) >> 8) & 0xfffff;
- reg_val |= ((para->zq) & 0xff) << 20;
- reg_val |= (para->zq) & 0xf0000000;
- writel(reg_val, &dram->zqcr0);
-#endif
-
-#ifdef CONFIG_SUN4I
- /* set I/O configure register */
- reg_val = 0x00cc0000;
- reg_val |= (para->odt_en) & 0x3;
- reg_val |= ((para->odt_en) & 0x3) << 30;
- writel(reg_val, &dram->iocr);
-#endif
-
/* set refresh period */
- dramc_set_autorefresh_cycle(para->clock, para->type - 2, density);
+ dramc_set_autorefresh_cycle(para->clock, density);
/* set timing parameters */
writel(para->tpr0, &dram->tpr0);
writel(para->tpr1, &dram->tpr1);
writel(para->tpr2, &dram->tpr2);
- if (para->type == DRAM_MEMORY_TYPE_DDR3) {
- reg_val = DRAM_MR_BURST_LENGTH(0x0);
+ reg_val = DRAM_MR_BURST_LENGTH(0x0);
#if (defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I))
- reg_val |= DRAM_MR_POWER_DOWN;
+ reg_val |= DRAM_MR_POWER_DOWN;
#endif
- reg_val |= DRAM_MR_CAS_LAT(para->cas - 4);
- reg_val |= DRAM_MR_WRITE_RECOVERY(0x5);
- } else if (para->type == DRAM_MEMORY_TYPE_DDR2) {
- reg_val = DRAM_MR_BURST_LENGTH(0x2);
- reg_val |= DRAM_MR_CAS_LAT(para->cas);
- reg_val |= DRAM_MR_WRITE_RECOVERY(0x5);
- }
+ reg_val |= DRAM_MR_CAS_LAT(para->cas - 4);
+ reg_val |= DRAM_MR_WRITE_RECOVERY(ddr3_write_recovery(para->clock));
writel(reg_val, &dram->mr);
writel(para->emr1, &dram->emr);
writel(para->emr2, &dram->emr2);
writel(para->emr3, &dram->emr3);
- /* set DQS window mode */
+ /* disable drift compensation and set passive DQS window mode */
clrsetbits_le32(&dram->ccr, DRAM_CCR_DQS_DRIFT_COMP, DRAM_CCR_DQS_GATE);
#ifdef CONFIG_SUN7I
@@ -620,70 +673,78 @@ unsigned long dramc_init(struct dram_para *para)
if (para->tpr4 & 0x1)
setbits_le32(&dram->ccr, DRAM_CCR_COMMAND_RATE_1T);
#endif
- /* reset external DRAM */
- setbits_le32(&dram->ccr, DRAM_CCR_INIT);
- await_completion(&dram->ccr, DRAM_CCR_INIT);
+ /* initialize external DRAM */
+ mctl_ddr3_initialize();
-#ifdef CONFIG_SUN7I
- /* setup zq calibration manual */
- reg_val = readl(&dram->ppwrsctl);
- if ((reg_val & 0x1) == 1) {
- /* super_standby_flag = 1 */
-
- reg_val = readl(0x01c20c00 + 0x120); /* rtc */
- reg_val &= 0x000fffff;
- reg_val |= 0x17b00000;
- writel(reg_val, &dram->zqcr0);
+ /* scan read pipe value */
+ mctl_itm_enable();
- /* exit self-refresh state */
- clrsetbits_le32(&dram->dcr, 0x1f << 27, 0x12 << 27);
- /* check whether command has been executed */
- await_completion(&dram->dcr, 0x1 << 31);
+ /* Hardware DQS gate training */
+ ret_val = dramc_scan_readpipe();
- udelay(2);
+ if (ret_val < 0)
+ return 0;
- /* dram pad hold off */
- setbits_le32(&dram->ppwrsctl, 0x16510000);
+ /* allow to override the DQS training results with a custom delay */
+ if (para->dqs_gating_delay)
+ mctl_set_dqs_gating_delay(0, para->dqs_gating_delay);
- await_completion(&dram->ppwrsctl, 0x1);
+ /* set the DQS gating window type */
+ if (para->active_windowing)
+ clrbits_le32(&dram->ccr, DRAM_CCR_DQS_GATE);
+ else
+ setbits_le32(&dram->ccr, DRAM_CCR_DQS_GATE);
- /* exit self-refresh state */
- clrsetbits_le32(&dram->dcr, 0x1f << 27, 0x12 << 27);
+ mctl_itm_reset();
- /* check whether command has been executed */
- await_completion(&dram->dcr, 0x1 << 31);
+ /* configure all host port */
+ mctl_configure_hostport();
- udelay(2);
+ return get_ram_size((long *)PHYS_SDRAM_0, PHYS_SDRAM_0_SIZE);
+}
- /* issue a refresh command */
- clrsetbits_le32(&dram->dcr, 0x1f << 27, 0x13 << 27);
- await_completion(&dram->dcr, 0x1 << 31);
+unsigned long dramc_init(struct dram_para *para)
+{
+ unsigned long dram_size, actual_density;
- udelay(2);
- }
+ /* If the dram configuration is not provided, use a default */
+ if (!para)
+ return 0;
+
+ /* if everything is known, then autodetection is not necessary */
+ if (para->io_width && para->bus_width && para->density)
+ return dramc_init_helper(para);
+
+ /* try to autodetect the DRAM bus width and density */
+ para->io_width = 16;
+ para->bus_width = 32;
+#if defined(CONFIG_SUN4I) || defined(CONFIG_SUN5I)
+ /* only A0-A14 address lines on A10/A13, limiting max density to 4096 */
+ para->density = 4096;
+#else
+ /* all A0-A15 address lines on A20, which allow density 8192 */
+ para->density = 8192;
#endif
- /* scan read pipe value */
- mctl_itm_enable();
- if (para->tpr3 & (0x1 << 31)) {
- ret_val = dramc_scan_dll_para();
- if (ret_val == 0)
- para->tpr3 =
- (((readl(&dram->dllcr[0]) >> 6) & 0x3f) << 16) |
- (((readl(&dram->dllcr[1]) >> 14) & 0xf) << 0) |
- (((readl(&dram->dllcr[2]) >> 14) & 0xf) << 4) |
- (((readl(&dram->dllcr[3]) >> 14) & 0xf) << 8) |
- (((readl(&dram->dllcr[4]) >> 14) & 0xf) << 12
- );
- } else {
- ret_val = dramc_scan_readpipe();
+ dram_size = dramc_init_helper(para);
+ if (!dram_size) {
+ /* if 32-bit bus width failed, try 16-bit bus width instead */
+ para->bus_width = 16;
+ dram_size = dramc_init_helper(para);
+ if (!dram_size) {
+ /* if 16-bit bus width also failed, then bail out */
+ return dram_size;
+ }
}
- if (ret_val < 0)
- return 0;
+ /* check if we need to adjust the density */
+ actual_density = (dram_size >> 17) * para->io_width / para->bus_width;
- /* configure all host port */
- mctl_configure_hostport();
+ if (actual_density != para->density) {
+ /* update the density and re-initialize DRAM again */
+ para->density = actual_density;
+ dram_size = dramc_init_helper(para);
+ }
- return get_ram_size((long *)PHYS_SDRAM_0, PHYS_SDRAM_0_SIZE);
+ return dram_size;
}
diff --git a/arch/arm/cpu/armv7/zynq/spl.c b/arch/arm/cpu/armv7/zynq/spl.c
index d73e5cb..9ff2ef2 100644
--- a/arch/arm/cpu/armv7/zynq/spl.c
+++ b/arch/arm/cpu/armv7/zynq/spl.c
@@ -8,7 +8,7 @@
#include <asm/io.h>
#include <asm/arch/hardware.h>
-#include <asm/arch/spl.h>
+#include <asm/spl.h>
#include <asm/arch/sys_proto.h>
DECLARE_GLOBAL_DATA_PTR;
diff --git a/arch/arm/cpu/armv7/zynq/u-boot-spl.lds b/arch/arm/cpu/armv7/zynq/u-boot-spl.lds
index 0c4501e..0f2f756 100644
--- a/arch/arm/cpu/armv7/zynq/u-boot-spl.lds
+++ b/arch/arm/cpu/armv7/zynq/u-boot-spl.lds
@@ -22,6 +22,7 @@ SECTIONS
.text :
{
__image_copy_start = .;
+ *(.vectors)
CPUDIR/start.o (.text*)
*(.text*)
} > .sram
diff --git a/arch/arm/cpu/tegra-common/Makefile b/arch/arm/cpu/tegra-common/Makefile
index 892556e..a18c318 100644
--- a/arch/arm/cpu/tegra-common/Makefile
+++ b/arch/arm/cpu/tegra-common/Makefile
@@ -14,3 +14,4 @@ obj-y += clock.o
obj-y += lowlevel_init.o
obj-y += pinmux-common.o
obj-$(CONFIG_DISPLAY_CPUINFO) += sys_info.o
+obj-$(CONFIG_TEGRA124) += vpr.o
diff --git a/arch/arm/cpu/tegra-common/ap.c b/arch/arm/cpu/tegra-common/ap.c
index 91d70da..a17dfd1 100644
--- a/arch/arm/cpu/tegra-common/ap.c
+++ b/arch/arm/cpu/tegra-common/ap.c
@@ -163,4 +163,7 @@ void s_init(void)
/* init the cache */
config_cache();
+
+ /* init vpr */
+ config_vpr();
}
diff --git a/arch/arm/cpu/tegra-common/board.c b/arch/arm/cpu/tegra-common/board.c
index 6a6faf4..433da09 100644
--- a/arch/arm/cpu/tegra-common/board.c
+++ b/arch/arm/cpu/tegra-common/board.c
@@ -27,11 +27,12 @@ enum {
UART_COUNT = 5,
};
+#if defined(CONFIG_TEGRA20) || defined(CONFIG_TEGRA30) || \
+ defined(CONFIG_TEGRA114)
/*
* Boot ROM initializes the odmdata in APBDEV_PMC_SCRATCH20_0,
* so we are using this value to identify memory size.
*/
-
unsigned int query_sdram_size(void)
{
struct pmc_ctlr *const pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
@@ -72,6 +73,21 @@ unsigned int query_sdram_size(void)
}
#endif
}
+#else
+#include <asm/arch/mc.h>
+
+/* Read the RAM size directly from the memory controller */
+unsigned int query_sdram_size(void)
+{
+ struct mc_ctlr *const mc = (struct mc_ctlr *)NV_PA_MC_BASE;
+ u32 size_mb;
+
+ size_mb = readl(&mc->mc_emem_cfg);
+ debug("mc->mc_emem_cfg (MEM_SIZE_MB) = 0x%08x\n", size_mb);
+
+ return size_mb * 1024 * 1024;
+}
+#endif
int dram_init(void)
{
diff --git a/arch/arm/cpu/tegra-common/vpr.c b/arch/arm/cpu/tegra-common/vpr.c
new file mode 100644
index 0000000..f695811
--- /dev/null
+++ b/arch/arm/cpu/tegra-common/vpr.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Tegra vpr routines */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch/mc.h>
+
+/* Configures VPR. Right now, all we do is turn it off. */
+void config_vpr(void)
+{
+ struct mc_ctlr *mc = (struct mc_ctlr *)NV_PA_MC_BASE;
+
+ /* Turn VPR off */
+ writel(0, &mc->mc_video_protect_size_mb);
+ writel(TEGRA_MC_VIDEO_PROTECT_REG_WRITE_ACCESS_DISABLED,
+ &mc->mc_video_protect_reg_ctrl);
+ /* read back to ensure the write went through */
+ readl(&mc->mc_video_protect_reg_ctrl);
+}
generated by cgit v1.1 at 2024-11-09 20:20:38 +0000