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| author | Haiying Wang <Haiying.Wang@freescale.com> | 2009-03-27 17:02:44 -0400 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2009-03-30 13:33:51 -0500 |
| commit | 22b6dbc1696d927d938dd4e16f65d83c0d4fb3f4 (patch) | |
| tree | 611cd5baec5cb44cb29fc46a2d2d8f7fb8ba23e6 /cpu/mpc85xx/start.S | |
| parent | 2d4de6ae5be54b367a72a7ef4e0cf36a9cd4881f (diff) | |
| download | u-boot-imx-22b6dbc1696d927d938dd4e16f65d83c0d4fb3f4.zip u-boot-imx-22b6dbc1696d927d938dd4e16f65d83c0d4fb3f4.tar.gz u-boot-imx-22b6dbc1696d927d938dd4e16f65d83c0d4fb3f4.tar.bz2 | |
MPC85xx: Add MPC8569 CPU support
There is a workaround for MPC8569 CPU Errata, which needs to set Bit 13 of
LBCR in 4K bootpage. We setup a temp TLB for eLBC controller in bootpage,
then invalidate it after LBCR bit 13 is set.
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'cpu/mpc85xx/start.S')
| -rw-r--r-- | cpu/mpc85xx/start.S | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S index 89eea8c..4f7236f 100644 --- a/cpu/mpc85xx/start.S +++ b/cpu/mpc85xx/start.S @@ -186,6 +186,55 @@ _start_e500: mtspr DBCR0,r0 #endif +#ifdef CONFIG_MPC8569 +#define CONFIG_SYS_LBC_ADDR (CONFIG_SYS_CCSRBAR_DEFAULT + 0x5000) +#define CONFIG_SYS_LBCR_ADDR (CONFIG_SYS_LBC_ADDR + 0xd0) + + /* MPC8569 Rev.0 silcon needs to set bit 13 of LBCR to allow elBC to + * use address space which is more than 12bits, and it must be done in + * the 4K boot page. So we set this bit here. + */ + + /* create a temp mapping TLB0[0] for LBCR */ + lis r6,FSL_BOOKE_MAS0(0, 0, 0)@h + ori r6,r6,FSL_BOOKE_MAS0(0, 0, 0)@l + + lis r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@h + ori r7,r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@l + + lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@h + ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@l + + lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0, + (MAS3_SX|MAS3_SW|MAS3_SR))@h + ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0, + (MAS3_SX|MAS3_SW|MAS3_SR))@l + + mtspr MAS0,r6 + mtspr MAS1,r7 + mtspr MAS2,r8 + mtspr MAS3,r9 + isync + msync + tlbwe + + /* Set LBCR register */ + lis r4,CONFIG_SYS_LBCR_ADDR@h + ori r4,r4,CONFIG_SYS_LBCR_ADDR@l + + lis r5,CONFIG_SYS_LBC_LBCR@h + ori r5,r5,CONFIG_SYS_LBC_LBCR@l + stw r5,0(r4) + isync + + /* invalidate this temp TLB */ + lis r4,CONFIG_SYS_LBC_ADDR@h + ori r4,r4,CONFIG_SYS_LBC_ADDR@l + tlbivax 0,r4 + isync + +#endif /* CONFIG_MPC8569 */ + /* create a temp mapping in AS=1 to the 4M boot window */ lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l |