projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 9fbbe689 SG |
1 | /* |
| 2 | * Copyright 2011 Freescale Semiconductor, Inc. | |
| 3 | * Copyright 2011 Linaro Ltd. | |
| 4 | * | |
| 5 | * The code contained herein is licensed under the GNU General Public | |
| 6 | * License. You may obtain a copy of the GNU General Public License | |
| 7 | * Version 2 or later at the following locations: | |
| 8 | * | |
| 9 | * http://www.opensource.org/licenses/gpl-license.html | |
| 10 | * http://www.gnu.org/copyleft/gpl.html | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/init.h> | |
| 14 | #include <linux/io.h> | |
| 15 | #include <linux/of.h> | |
| 16 | #include <linux/of_address.h> | |
| eaa142ca | 17 | #include <linux/smp.h> |
| 9fbbe689 SG |
18 | #include <asm/unified.h> |
| 19 | ||
| 20 | #define SRC_SCR 0x000 | |
| 21 | #define SRC_GPR1 0x020 | |
| 22 | #define BP_SRC_SCR_CORE1_RST 14 | |
| 23 | #define BP_SRC_SCR_CORE1_ENABLE 22 | |
| 24 | ||
| 25 | static void __iomem *src_base; | |
| 26 | ||
| eaa142ca WD |
27 | #ifndef CONFIG_SMP |
| 28 | #define cpu_logical_map(cpu) 0 | |
| 29 | #endif | |
| 30 | ||
| 9fbbe689 SG |
31 | void imx_enable_cpu(int cpu, bool enable) |
| 32 | { | |
| 33 | u32 mask, val; | |
| 34 | ||
| eaa142ca | 35 | cpu = cpu_logical_map(cpu); |
| 9fbbe689 SG |
36 | mask = 1 << (BP_SRC_SCR_CORE1_ENABLE + cpu - 1); |
| 37 | val = readl_relaxed(src_base + SRC_SCR); | |
| 38 | val = enable ? val | mask : val & ~mask; | |
| 39 | writel_relaxed(val, src_base + SRC_SCR); | |
| 40 | } | |
| 41 | ||
| 42 | void imx_set_cpu_jump(int cpu, void *jump_addr) | |
| 43 | { | |
| eaa142ca | 44 | cpu = cpu_logical_map(cpu); |
| 9fbbe689 SG |
45 | writel_relaxed(BSYM(virt_to_phys(jump_addr)), |
| 46 | src_base + SRC_GPR1 + cpu * 8); | |
| 47 | } | |
| 48 | ||
| 49 | void __init imx_src_init(void) | |
| 50 | { | |
| 51 | struct device_node *np; | |
| 52 | ||
| 53 | np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-src"); | |
| 54 | src_base = of_iomap(np, 0); | |
| 55 | WARN_ON(!src_base); | |
| 56 | } |