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https://github.com/AsahiLinux/u-boot
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158 lines
4.2 KiB
C
158 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2009-2014 Freescale Semiconductor, Inc.
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* Copyright 2020 NXP
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*
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* This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and
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* arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains
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* cpu specific common code for 85xx/86xx processors.
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <linux/libfdt.h>
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#include <fdt_support.h>
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#include <asm/mp.h>
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#include <asm/fsl_serdes.h>
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#include <phy.h>
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#include <hwconfig.h>
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#if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx))
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static int ft_del_cpuhandle(void *blob, int cpuhandle)
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{
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int off, ret = -FDT_ERR_NOTFOUND;
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/* if we find a match, we'll delete at it which point the offsets are
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* invalid so we start over from the beginning
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*/
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off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
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&cpuhandle, 4);
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while (off != -FDT_ERR_NOTFOUND) {
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fdt_delprop(blob, off, "cpu-handle");
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ret = 1;
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off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
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&cpuhandle, 4);
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}
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return ret;
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}
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void ft_fixup_num_cores(void *blob) {
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int off, num_cores, del_cores;
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del_cores = 0;
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num_cores = cpu_numcores();
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off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
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while (off != -FDT_ERR_NOTFOUND) {
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u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
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u32 phys_cpu_id = thread_to_core(*reg);
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if (!is_core_valid(phys_cpu_id) || is_core_disabled(phys_cpu_id)) {
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int ph = fdt_get_phandle(blob, off);
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/* Delete the cpu node once there are no cpu handles */
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if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) {
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fdt_del_node(blob, off);
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del_cores++;
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}
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/* either we deleted some cpu handles or the cpu node
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* so we reset the offset back to the start since we
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* can't trust the offsets anymore
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*/
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off = -1;
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}
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off = fdt_node_offset_by_prop_value(blob, off,
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"device_type", "cpu", 4);
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}
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debug ("%x core system found\n", num_cores);
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debug ("deleted %d extra core entry entries from device tree\n",
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del_cores);
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}
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#endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
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int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
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{
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const char *conn;
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/* Do NOT apply fixup for backplane modes specified in DT */
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if (phyc == PHY_INTERFACE_MODE_XGMII) {
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conn = fdt_getprop(blob, offset, "phy-connection-type", NULL);
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if (is_backplane_mode(conn))
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return 0;
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}
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return fdt_setprop_string(blob, offset, "phy-connection-type",
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phy_string_for_interface(phyc));
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}
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#ifdef CONFIG_SYS_SRIO
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static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
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{
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int off = fdt_node_offset_by_prop_value(blob, srio_off,
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"cell-index", &port, 4);
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if (off >= 0) {
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off = fdt_setprop_string(blob, off, "status", "disabled");
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if (off > 0)
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printf("WARNING unable to set status for fsl,srio "
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"port %d: %s\n", port, fdt_strerror(off));
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}
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}
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static inline void ft_disable_rman(void *blob)
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{
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int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
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if (off >= 0) {
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off = fdt_setprop_string(blob, off, "status", "disabled");
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if (off > 0)
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printf("WARNING unable to set status for fsl,rman %s\n",
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fdt_strerror(off));
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}
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}
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static inline void ft_disable_rmu(void *blob)
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{
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int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
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if (off >= 0) {
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off = fdt_setprop_string(blob, off, "status", "disabled");
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if (off > 0)
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printf("WARNING unable to set status for "
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"fsl,srio-rmu %s\n", fdt_strerror(off));
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}
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}
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void ft_srio_setup(void *blob)
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{
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int srio1_used = 0, srio2_used = 0;
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int srio_off;
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/* search for srio node, if doesn't exist just return - nothing todo */
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srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
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if (srio_off < 0)
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return;
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#ifdef CONFIG_SRIO1
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if (is_serdes_configured(SRIO1))
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srio1_used = 1;
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#endif
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#ifdef CONFIG_SRIO2
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if (is_serdes_configured(SRIO2))
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srio2_used = 1;
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#endif
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/* mark port1 disabled */
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if (!srio1_used)
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ft_disable_srio_port(blob, srio_off, 1);
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/* mark port2 disabled */
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if (!srio2_used)
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ft_disable_srio_port(blob, srio_off, 2);
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/* if both ports not used, disable controller, rmu and rman */
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if (!srio1_used && !srio2_used) {
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fdt_setprop_string(blob, srio_off, "status", "disabled");
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ft_disable_rman(blob);
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ft_disable_rmu(blob);
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}
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}
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#endif
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