diff options
| author | Prabhakar Kushwaha <prabhakar@freescale.com> | 2014-04-08 19:12:46 +0530 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-04-22 17:58:50 -0700 |
| commit | 6b3d588efee911db65f9deb319488cfe1499c835 (patch) | |
| tree | 6428eae7b1f3a85c41a8b14a3a452888f3336fa1 /arch/powerpc/cpu/mpc8xxx | |
| parent | 651fcf6019eec1a65d4227082e12bc6ad4576f41 (diff) | |
powerpc/mpc85xx:Disable non DDR LAWs before init_law
Before parsing LAW table i.e. init_law, boot loader should disable all
previous LAWs except DDR LAWs which has been created by previous
pre boot loader during DDR initialization.
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc/cpu/mpc8xxx')
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/law.c | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/law.c b/arch/powerpc/cpu/mpc8xxx/law.c index 55ee12573f..33d53a8cfe 100644 --- a/arch/powerpc/cpu/mpc8xxx/law.c +++ b/arch/powerpc/cpu/mpc8xxx/law.c @@ -221,6 +221,32 @@ int set_ddr_laws(u64 start, u64 sz, enum law_trgt_if id) } #endif /* not SPL */ +void disable_non_ddr_laws(void) +{ + int i; + int id; + for (i = 0; i < FSL_HW_NUM_LAWS; i++) { + u32 lawar = in_be32(LAWAR_ADDR(i)); + + if (lawar & LAW_EN) { + id = (lawar & ~LAW_EN) >> 20; + switch (id) { + case LAW_TRGT_IF_DDR_1: + case LAW_TRGT_IF_DDR_2: + case LAW_TRGT_IF_DDR_3: + case LAW_TRGT_IF_DDR_4: + case LAW_TRGT_IF_DDR_INTRLV: + case LAW_TRGT_IF_DDR_INTLV_34: + case LAW_TRGT_IF_DDR_INTLV_123: + case LAW_TRGT_IF_DDR_INTLV_1234: + continue; + default: + disable_law(i); + } + } + } +} + void init_laws(void) { int i; @@ -242,6 +268,13 @@ void init_laws(void) disable_law(0); #endif +#if !defined(CONFIG_SECURE_BOOT) + /* + * if any non DDR LAWs has been created earlier, remove them before + * LAW table is parsed. + */ + disable_non_ddr_laws(); +#endif /* * Any LAWs that were set up before we booted assume they are meant to @@ -254,15 +287,6 @@ void init_laws(void) gd->arch.used_laws |= (1 << i); } -#if (defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)) || \ - (defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)) - /* - * in SPL boot we've already parsed the law_table and setup those LAWs - * so don't do it again. - */ - return; -#endif - for (i = 0; i < num_law_entries; i++) { if (law_table[i].index == -1) set_next_law(law_table[i].addr, law_table[i].size, |