1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2009-2014 Freescale Semiconductor, Inc. 4 * 5 * This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and 6 * arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains 7 * cpu specific common code for 85xx/86xx processors. 8 */ 9 10 #include <common.h> 11 #include <linux/libfdt.h> 12 #include <fdt_support.h> 13 #include <asm/mp.h> 14 #include <asm/fsl_serdes.h> 15 #include <phy.h> 16 #include <hwconfig.h> 17 18 #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT 19 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 20 #endif 21 22 #if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)) 23 static int ft_del_cpuhandle(void *blob, int cpuhandle) 24 { 25 int off, ret = -FDT_ERR_NOTFOUND; 26 27 /* if we find a match, we'll delete at it which point the offsets are 28 * invalid so we start over from the beginning 29 */ 30 off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle", 31 &cpuhandle, 4); 32 while (off != -FDT_ERR_NOTFOUND) { 33 fdt_delprop(blob, off, "cpu-handle"); 34 ret = 1; 35 off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle", 36 &cpuhandle, 4); 37 } 38 39 return ret; 40 } 41 42 void ft_fixup_num_cores(void *blob) { 43 int off, num_cores, del_cores; 44 45 del_cores = 0; 46 num_cores = cpu_numcores(); 47 48 off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4); 49 while (off != -FDT_ERR_NOTFOUND) { 50 u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0); 51 u32 phys_cpu_id = thread_to_core(*reg); 52 53 if (!is_core_valid(phys_cpu_id) || is_core_disabled(phys_cpu_id)) { 54 int ph = fdt_get_phandle(blob, off); 55 56 /* Delete the cpu node once there are no cpu handles */ 57 if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) { 58 fdt_del_node(blob, off); 59 del_cores++; 60 } 61 /* either we deleted some cpu handles or the cpu node 62 * so we reset the offset back to the start since we 63 * can't trust the offsets anymore 64 */ 65 off = -1; 66 } 67 off = fdt_node_offset_by_prop_value(blob, off, 68 "device_type", "cpu", 4); 69 } 70 debug ("%x core system found\n", num_cores); 71 debug ("deleted %d extra core entry entries from device tree\n", 72 del_cores); 73 } 74 #endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */ 75 76 int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc) 77 { 78 return fdt_setprop_string(blob, offset, "phy-connection-type", 79 phy_string_for_interface(phyc)); 80 } 81 82 #ifdef CONFIG_SYS_SRIO 83 static inline void ft_disable_srio_port(void *blob, int srio_off, int port) 84 { 85 int off = fdt_node_offset_by_prop_value(blob, srio_off, 86 "cell-index", &port, 4); 87 if (off >= 0) { 88 off = fdt_setprop_string(blob, off, "status", "disabled"); 89 if (off > 0) 90 printf("WARNING unable to set status for fsl,srio " 91 "port %d: %s\n", port, fdt_strerror(off)); 92 } 93 } 94 95 static inline void ft_disable_rman(void *blob) 96 { 97 int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman"); 98 if (off >= 0) { 99 off = fdt_setprop_string(blob, off, "status", "disabled"); 100 if (off > 0) 101 printf("WARNING unable to set status for fsl,rman %s\n", 102 fdt_strerror(off)); 103 } 104 } 105 106 static inline void ft_disable_rmu(void *blob) 107 { 108 int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu"); 109 if (off >= 0) { 110 off = fdt_setprop_string(blob, off, "status", "disabled"); 111 if (off > 0) 112 printf("WARNING unable to set status for " 113 "fsl,srio-rmu %s\n", fdt_strerror(off)); 114 } 115 } 116 117 void ft_srio_setup(void *blob) 118 { 119 int srio1_used = 0, srio2_used = 0; 120 int srio_off; 121 122 /* search for srio node, if doesn't exist just return - nothing todo */ 123 srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio"); 124 if (srio_off < 0) 125 return ; 126 127 #ifdef CONFIG_SRIO1 128 if (is_serdes_configured(SRIO1)) 129 srio1_used = 1; 130 #endif 131 #ifdef CONFIG_SRIO2 132 if (is_serdes_configured(SRIO2)) 133 srio2_used = 1; 134 #endif 135 136 /* mark port1 disabled */ 137 if (!srio1_used) 138 ft_disable_srio_port(blob, srio_off, 1); 139 140 /* mark port2 disabled */ 141 if (!srio2_used) 142 ft_disable_srio_port(blob, srio_off, 2); 143 144 /* if both ports not used, disable controller, rmu and rman */ 145 if (!srio1_used && !srio2_used) { 146 fdt_setprop_string(blob, srio_off, "status", "disabled"); 147 148 ft_disable_rman(blob); 149 ft_disable_rmu(blob); 150 } 151 } 152 #endif 153
