diff options
Diffstat (limited to 'arch/arm/cpu/armv7/zynq')
-rw-r--r-- | arch/arm/cpu/armv7/zynq/slcr.c | 61 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/zynq/timer.c | 49 |
2 files changed, 100 insertions, 10 deletions
diff --git a/arch/arm/cpu/armv7/zynq/slcr.c b/arch/arm/cpu/armv7/zynq/slcr.c index 788a8fd..52048c6 100644 --- a/arch/arm/cpu/armv7/zynq/slcr.c +++ b/arch/arm/cpu/armv7/zynq/slcr.c @@ -28,6 +28,9 @@ #define SLCR_LOCK_MAGIC 0x767B #define SLCR_UNLOCK_MAGIC 0xDF0D +#define SLCR_IDCODE_MASK 0x1F000 +#define SLCR_IDCODE_SHIFT 12 + static int slcr_lock = 1; /* 1 means locked, 0 means unlocked */ void zynq_slcr_lock(void) @@ -61,3 +64,61 @@ void zynq_slcr_cpu_reset(void) writel(1, &slcr_base->pss_rst_ctrl); } + +/* Setup clk for network */ +void zynq_slcr_gem_clk_setup(u32 gem_id, u32 rclk, u32 clk) +{ + zynq_slcr_unlock(); + + if (gem_id > 1) { + printf("Non existing GEM id %d\n", gem_id); + goto out; + } + + if (gem_id) { + /* Set divisors for appropriate frequency in GEM_CLK_CTRL */ + writel(clk, &slcr_base->gem1_clk_ctrl); + /* Configure GEM_RCLK_CTRL */ + writel(rclk, &slcr_base->gem1_rclk_ctrl); + } else { + /* Set divisors for appropriate frequency in GEM_CLK_CTRL */ + writel(clk, &slcr_base->gem0_clk_ctrl); + /* Configure GEM_RCLK_CTRL */ + writel(rclk, &slcr_base->gem0_rclk_ctrl); + } + +out: + zynq_slcr_lock(); +} + +void zynq_slcr_devcfg_disable(void) +{ + zynq_slcr_unlock(); + + /* Disable AXI interface */ + writel(0xFFFFFFFF, &slcr_base->fpga_rst_ctrl); + + /* Set Level Shifters DT618760 */ + writel(0xA, &slcr_base->lvl_shftr_en); + + zynq_slcr_lock(); +} + +void zynq_slcr_devcfg_enable(void) +{ + zynq_slcr_unlock(); + + /* Set Level Shifters DT618760 */ + writel(0xF, &slcr_base->lvl_shftr_en); + + /* Disable AXI interface */ + writel(0x0, &slcr_base->fpga_rst_ctrl); + + zynq_slcr_lock(); +} + +u32 zynq_slcr_get_idcode(void) +{ + return (readl(&slcr_base->pss_idcode) & SLCR_IDCODE_MASK) >> + SLCR_IDCODE_SHIFT; +} diff --git a/arch/arm/cpu/armv7/zynq/timer.c b/arch/arm/cpu/armv7/zynq/timer.c index 45b405a..8c4357d 100644 --- a/arch/arm/cpu/armv7/zynq/timer.c +++ b/arch/arm/cpu/armv7/zynq/timer.c @@ -44,6 +44,7 @@ #include <common.h> #include <div64.h> #include <asm/io.h> +#include <asm/arch/hardware.h> DECLARE_GLOBAL_DATA_PTR; @@ -54,7 +55,7 @@ struct scu_timer { }; static struct scu_timer *timer_base = - (struct scu_timer *) CONFIG_SCUTIMER_BASEADDR; + (struct scu_timer *)ZYNQ_SCUTIMER_BASEADDR; #define SCUTIMER_CONTROL_PRESCALER_MASK 0x0000FF00 /* Prescaler */ #define SCUTIMER_CONTROL_PRESCALER_SHIFT 8 @@ -114,15 +115,43 @@ ulong get_timer_masked(void) void __udelay(unsigned long usec) { - unsigned long long tmp; - ulong tmo; - - tmo = usec / (1000000 / CONFIG_SYS_HZ); - tmp = get_ticks() + tmo; /* Get current timestamp */ - - while (get_ticks() < tmp) { /* Loop till event */ - /* NOP */; - } + u32 countticks; + u32 timeend; + u32 timediff; + u32 timenow; + + if (usec == 0) + return; + + countticks = (u32) (((unsigned long long) TIMER_TICK_HZ * usec) / + 1000000); + + /* decrementing timer */ + timeend = readl(&timer_base->counter) - countticks; + +#if TIMER_LOAD_VAL != 0xFFFFFFFF + /* do not manage multiple overflow */ + if (countticks >= TIMER_LOAD_VAL) + countticks = TIMER_LOAD_VAL - 1; +#endif + + do { + timenow = readl(&timer_base->counter); + + if (timenow >= timeend) { + /* normal case */ + timediff = timenow - timeend; + } else { + if ((TIMER_LOAD_VAL - timeend + timenow) <= + countticks) { + /* overflow */ + timediff = TIMER_LOAD_VAL - timeend + timenow; + } else { + /* missed the exact match */ + break; + } + } + } while (timediff > 0); } /* Timer without interrupts */ |