platsmp.c (f26e8817b235d8764363bffcc9cbfc61867371f2) platsmp.c (64fc2a947a9873700929ec0ef02b4654a04e0476)
1/*
2 * Copyright (C) 2014-2015 Broadcom Corporation
3 * Copyright 2014 Linaro Limited
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation version 2.
8 *

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111
112 sku_rom_lut = ioremap_nocache((phys_addr_t)secondary_boot_addr,
113 sizeof(phys_addr_t));
114 if (!sku_rom_lut) {
115 pr_warn("unable to ioremap SKU-ROM LUT register for cpu %u\n", cpu);
116 return -ENOMEM;
117 }
118
1/*
2 * Copyright (C) 2014-2015 Broadcom Corporation
3 * Copyright 2014 Linaro Limited
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation version 2.
8 *

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111
112 sku_rom_lut = ioremap_nocache((phys_addr_t)secondary_boot_addr,
113 sizeof(phys_addr_t));
114 if (!sku_rom_lut) {
115 pr_warn("unable to ioremap SKU-ROM LUT register for cpu %u\n", cpu);
116 return -ENOMEM;
117 }
118
119 secondary_startup_phy = virt_to_phys(secondary_startup);
119 secondary_startup_phy = __pa_symbol(secondary_startup);
120 BUG_ON(secondary_startup_phy > (phys_addr_t)U32_MAX);
121
122 writel_relaxed(secondary_startup_phy, sku_rom_lut);
123
124 /* Ensure the write is visible to the secondary core */
125 smp_wmb();
126
127 iounmap(sku_rom_lut);

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184 pr_err("unable to map boot register for cpu %u\n", cpu_id);
185 return -ENOMEM;
186 }
187
188 /*
189 * Secondary cores will start in secondary_startup(),
190 * defined in "arch/arm/kernel/head.S"
191 */
120 BUG_ON(secondary_startup_phy > (phys_addr_t)U32_MAX);
121
122 writel_relaxed(secondary_startup_phy, sku_rom_lut);
123
124 /* Ensure the write is visible to the secondary core */
125 smp_wmb();
126
127 iounmap(sku_rom_lut);

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184 pr_err("unable to map boot register for cpu %u\n", cpu_id);
185 return -ENOMEM;
186 }
187
188 /*
189 * Secondary cores will start in secondary_startup(),
190 * defined in "arch/arm/kernel/head.S"
191 */
192 boot_func = virt_to_phys(secondary_startup);
192 boot_func = __pa_symbol(secondary_startup);
193 BUG_ON(boot_func & BOOT_ADDR_CPUID_MASK);
194 BUG_ON(boot_func > (phys_addr_t)U32_MAX);
195
196 /* The core to start is encoded in the low bits */
197 boot_val = (u32)boot_func | cpu_id;
198 writel_relaxed(boot_val, boot_reg);
199
200 sev();

--- 106 unchanged lines hidden --- 		193 BUG_ON(boot_func & BOOT_ADDR_CPUID_MASK);
194 BUG_ON(boot_func > (phys_addr_t)U32_MAX);
195
196 /* The core to start is encoded in the low bits */
197 boot_val = (u32)boot_func | cpu_id;
198 writel_relaxed(boot_val, boot_reg);
199
200 sev();

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