diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/cpu_init.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cpu_init.c | 52 |
1 files changed, 45 insertions, 7 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index fc6c2877d2..afb56719da 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -38,6 +38,7 @@ #include <asm/fsl_law.h> #include <asm/fsl_serdes.h> #include <asm/fsl_srio.h> +#include <hwconfig.h> #include <linux/compiler.h> #include "mp.h" #ifdef CONFIG_SYS_QE_FMAN_FW_IN_NAND @@ -311,11 +312,41 @@ int cpu_init_r(void) #if defined(CONFIG_SYS_P4080_ERRATUM_CPU22) || \ defined(CONFIG_SYS_FSL_ERRATUM_NMG_CPU_A011) /* + * CPU22 and NMG_CPU_A011 share the same workaround. * CPU22 applies to P4080 rev 1.0, 2.0, fixed in 3.0 * NMG_CPU_A011 applies to P4080 rev 1.0, 2.0, fixed in 3.0 - * also applies to P3041 rev 1.0, 1.1, P2041 rev 1.0, 1.1 + * also applies to P3041 rev 1.0, 1.1, P2041 rev 1.0, 1.1, both + * fixed in 2.0. NMG_CPU_A011 is activated by default and can + * be disabled by hwconfig with syntax: + * + * fsl_cpu_a011:disable */ - if (SVR_SOC_VER(svr) != SVR_P4080 || SVR_MAJ(svr) < 3) { + extern int enable_cpu_a011_workaround; +#ifdef CONFIG_SYS_P4080_ERRATUM_CPU22 + enable_cpu_a011_workaround = (SVR_MAJ(svr) < 3); +#else + char buffer[HWCONFIG_BUFFER_SIZE]; + char *buf = NULL; + int n, res; + + n = getenv_f("hwconfig", buffer, sizeof(buffer)); + if (n > 0) + buf = buffer; + + res = hwconfig_arg_cmp_f("fsl_cpu_a011", "disable", buf); + if (res > 0) + enable_cpu_a011_workaround = 0; + else { + if (n >= HWCONFIG_BUFFER_SIZE) { + printf("fsl_cpu_a011 was not found. hwconfig variable " + "may be too long\n"); + } + enable_cpu_a011_workaround = + (SVR_SOC_VER(svr) == SVR_P4080 && SVR_MAJ(svr) < 3) || + (SVR_SOC_VER(svr) != SVR_P4080 && SVR_MAJ(svr) < 2); + } +#endif + if (enable_cpu_a011_workaround) { flush_dcache(); mtspr(L1CSR2, (mfspr(L1CSR2) | L1CSR2_DCWS)); sync(); @@ -447,11 +478,18 @@ skip_l2: #ifdef CONFIG_SYS_SRIO srio_init(); -#ifdef CONFIG_SRIOBOOT_MASTER - srio_boot_master(); -#ifdef CONFIG_SRIOBOOT_SLAVE_HOLDOFF - srio_boot_master_release_slave(); -#endif +#ifdef CONFIG_FSL_CORENET + char *s = getenv("bootmaster"); + if (s) { + if (!strcmp(s, "SRIO1")) { + srio_boot_master(1); + srio_boot_master_release_slave(1); + } + if (!strcmp(s, "SRIO2")) { + srio_boot_master(2); + srio_boot_master_release_slave(2); + } + } #endif #endif |