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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>
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651fcf6019
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1 changed files with 33 additions and 9 deletions
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@ -221,6 +221,32 @@ int set_ddr_laws(u64 start, u64 sz, enum law_trgt_if id)
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}
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#endif /* not SPL */
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void disable_non_ddr_laws(void)
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{
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int i;
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int id;
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for (i = 0; i < FSL_HW_NUM_LAWS; i++) {
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u32 lawar = in_be32(LAWAR_ADDR(i));
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if (lawar & LAW_EN) {
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id = (lawar & ~LAW_EN) >> 20;
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switch (id) {
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case LAW_TRGT_IF_DDR_1:
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case LAW_TRGT_IF_DDR_2:
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case LAW_TRGT_IF_DDR_3:
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case LAW_TRGT_IF_DDR_4:
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case LAW_TRGT_IF_DDR_INTRLV:
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case LAW_TRGT_IF_DDR_INTLV_34:
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case LAW_TRGT_IF_DDR_INTLV_123:
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case LAW_TRGT_IF_DDR_INTLV_1234:
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continue;
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default:
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disable_law(i);
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}
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}
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}
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}
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void init_laws(void)
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{
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int i;
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@ -242,6 +268,13 @@ void init_laws(void)
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disable_law(0);
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#endif
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#if !defined(CONFIG_SECURE_BOOT)
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/*
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* if any non DDR LAWs has been created earlier, remove them before
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* LAW table is parsed.
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*/
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disable_non_ddr_laws();
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#endif
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/*
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* Any LAWs that were set up before we booted assume they are meant to
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@ -254,15 +287,6 @@ void init_laws(void)
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gd->arch.used_laws |= (1 << i);
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}
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#if (defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)) || \
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(defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD))
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/*
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* in SPL boot we've already parsed the law_table and setup those LAWs
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* so don't do it again.
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*/
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return;
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#endif
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for (i = 0; i < num_law_entries; i++) {
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if (law_table[i].index == -1)
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set_next_law(law_table[i].addr, law_table[i].size,
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