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powerpc/8xx: Add microcode patch to move SMC parameter RAM. 

Some SCC functions like the QMC requires an extended parameter RAM.
On modern 8xx (ie 866 and 885), SPI area can already be relocated,
allowing the use of those functions on SCC2. But SCC3 and SCC4
parameter RAM collide with SMC1 and SMC2 parameter RAMs.

This patch adds microcode to allow the relocation of both SMC1 and
SMC2, and relocate them at offsets 0x1ec0 and 0x1fc0.
Those offsets are by default for the CPM1 DSP1 and DSP2, but there
is no kernel driver using them at the moment so this area can be
reused.

This microcode is provided by Freescale/NXP in Engineering Bulletin
EB662 ("MPC8xx I2C/SPI and SMC Relocation Microcode Packages")
dated 2006. The binary code is public. The source is not available.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2019-06-14 06:41:47 +00:00 committed by Michael Ellerman
parent c3eec5d7da
commit 43db76f418
2 changed files with 104 additions and 0 deletions
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7
arch/powerpc/platforms/8xx/Kconfig
View File

@ -157,6 +157,13 @@ config I2C_SPI_SMC1_UCODE_PATCH
help
Help not implemented yet, coming soon.
config SMC_UCODE_PATCH
bool "SMC relocation patch"
help
This microcode relocates SMC1 and SMC2 parameter RAMs at
offset 0x1ec0 and 0x1fc0 to allow extended parameter RAM
for SCC3 and SCC4.
endchoice
config UCODE_PATCH

97
arch/powerpc/platforms/8xx/micropatch.c
View File

@ -234,6 +234,94 @@ static uint patch_2f00[] __initdata = {
static uint patch_2e00[] __initdata = {};
#endif
/*
* SMC relocation patch arrays.
*/
#ifdef CONFIG_SMC_UCODE_PATCH
static char patch_name[] __initdata = "SMC";
static struct patch_params patch_params __initdata = {
2, 0x8080, 0x8088,
};
static uint patch_2000[] __initdata = {
0x3fff0000, 0x3ffd0000, 0x3ffb0000, 0x3ff90000,
0x5fefeff8, 0x5f91eff8, 0x3ff30000, 0x3ff10000,
0x3a11e710, 0xedf0ccb9, 0xf318ed66, 0x7f0e5fe2,
0x7fedbb38, 0x3afe7468, 0x7fedf4d8, 0x8ffbb92d,
0xb83b77fd, 0xb0bb5eb9, 0xdfda7fed, 0x90bde74d,
0x6f0dcbd3, 0xe7decfed, 0xcb50cfed, 0xcfeddf6d,
0x914d4f74, 0x5eaedfcb, 0x9ee0e7df, 0xefbb6ffb,
0xe7ef7f0e, 0x9ee57fed, 0xebb7effa, 0xeb30affb,
0x7fea90b3, 0x7e0cf09f, 0xbffff318, 0x5fffdfff,
0xac35efea, 0x7fce1fc1, 0xe2ff5fbd, 0xaffbe2ff,
0x5fbfaffb, 0xf9a87d0f, 0xaef8770f, 0x7d0fb0a2,
0xeffbbfff, 0xcfef5fba, 0x7d0fbfff, 0x5fba4cf8,
0x7fddd09b, 0x49f847fd, 0x7efdf097, 0x7fedfffd,
0x7dfdf093, 0xef7e7e1e, 0x5fba7f0e, 0x3a11e710,
0xedf0cc87, 0xfb18ad0a, 0x1f85bbb8, 0x74283b7e,
0x7375e4bb, 0x2ab64fb8, 0x5c7de4bb, 0x32fdffbf,
0x5f0843f8, 0x7ce3e1bb, 0xe74f7ded, 0x6f0f4fe8,
0xc7ba32be, 0x73f2efeb, 0x600b4f78, 0xe5bb760b,
0x5388aef8, 0x4ef80b6a, 0xcfef9ee5, 0xabf8751f,
0xefef5b88, 0x741f4fe8, 0x751e760d, 0x7fdb70dd,
0x741cafce, 0xefcc7fce, 0x751e7088, 0x741ce7bb,
0x334ecfed, 0xafdbefeb, 0xe5bb760b, 0x53ceaef8,
0xafe8e7eb, 0x4bf8771e, 0x7e007fed, 0x4fcbe2cc,
0x7fbc3085, 0x7b0f7a0f, 0x34b177fd, 0xb0e75e93,
0xdf313e3b, 0xaf78741f, 0x741f30cc, 0xcfef5f08,
0x741f3e88, 0xafb8771e, 0x5f437fed, 0x0bafe2cc,
0x741ccfec, 0xe5ca53a9, 0x6fcb4f74, 0x5e89df27,
0x2a923d14, 0x4b8fdf0c, 0x751f741c, 0x6c1eeffa,
0xefea7fce, 0x6ffc309a, 0xefec3fca, 0x308fdf0a,
0xadf85e7a, 0xaf7daefd, 0x5e7adf0a, 0x5e7aafdd,
0x761f1088, 0x1e7c7efd, 0x3089fffe, 0x4908fb18,
0x5fffdfff, 0xafbbf0f7, 0x4ef85f43, 0xadf81489,
0x7a0f7089, 0xcfef5089, 0x7a0fdf0c, 0x5e7cafed,
0xbc6e780f, 0xefef780f, 0xefef790f, 0xa7f85eeb,
0xffef790f, 0xefef790f, 0x1489df0a, 0x5e7aadfd,
0x5f09fffb, 0xe79aded9, 0xeff96079, 0x607ae79a,
0xded8eff9, 0x60795edb, 0x607acfef, 0xefefefdf,
0xefbfef7f, 0xeeffedff, 0xebffe7ff, 0xafefafdf,
0xafbfaf7f, 0xaeffadff, 0xabffa7ff, 0x6fef6fdf,
0x6fbf6f7f, 0x6eff6dff, 0x6bff67ff, 0x2fef2fdf,
0x2fbf2f7f, 0x2eff2dff, 0x2bff27ff, 0x4e08fd1f,
0xe5ff6e0f, 0xaff87eef, 0x7e0ffdef, 0xf11f6079,
0xabf8f51e, 0x7e0af11c, 0x37cfae16, 0x7fec909a,
0xadf8efdc, 0xcfeae52f, 0x7d0fe12b, 0xf11c6079,
0x7e0a4df8, 0xcfea5ea0, 0x7d0befec, 0xcfea5ea2,
0xe522efdc, 0x5ea2cfda, 0x4e08fd1f, 0x6e0faff8,
0x7c1f761f, 0xfdeff91f, 0x6079abf8, 0x761cee00,
0xf91f2bfb, 0xefefcfec, 0xf91f6079, 0x761c27fb,
0xefdf5e83, 0xcfdc7fdd, 0x50f84bf8, 0x47fd7c1f,
0x761ccfcf, 0x7eef7fed, 0x7dfd70ef, 0xef7e7f1e,
0x771efb18, 0x6079e722, 0xe6bbe5bb, 0x2e66e5bb,
0x600b2ee1, 0xe2bbe2bb, 0xe2bbe2bb, 0x2f5ee2bb,
0xe2bb2ff9, 0x6079e2bb,
};
static uint patch_2f00[] __initdata = {
0x30303030, 0x3e3e3030, 0xaf79b9b3, 0xbaa3b979,
0x9693369f, 0x79f79777, 0x97333fff, 0xfb3b9e9f,
0x79b91d11, 0x9e13f3ff, 0x3f9b6bd9, 0xe173d136,
0x695669d1, 0x697b3daf, 0x79b93a3a, 0x3f979f91,
0x379ff976, 0xf99777fd, 0x9779737d, 0xe9d6bbf9,
0xbfffd9df, 0x97f7fd97, 0x6f7b9bff, 0xf9bd9683,
0x397db973, 0xd97b3b9f, 0xd7f9f733, 0x9993bb9e,
0xe1f9ef93, 0x73773337, 0xb936917d, 0x11f87379,
0xb979d336, 0x8b7ded73, 0x1b7d9337, 0x31f3f22f,
0x3f2327ee, 0xeeeeeeee, 0xeeeeeeee, 0xeeeeeeee,
0xeeeeee4b, 0xf4fbdbd2, 0x58bb1878, 0x577fdfd2,
0xd573b773, 0xf7374b4f, 0xbdbd25b8, 0xb177d2d1,
0x7376856b, 0xbfdd687b, 0xdd2fff8f, 0x78ffff8f,
0xf22f0000,
};
static uint patch_2e00[] __initdata = {};
#endif
static void __init cpm_write_patch(cpm8xx_t *cp, int offset, uint *patch, int len)
{
if (!len)
@ -270,6 +358,15 @@ void __init cpm_load_patch(cpm8xx_t *cp)
}
}
if (IS_ENABLED(CONFIG_SMC_UCODE_PATCH)) {
smc_uart_t *smp;
smp = (smc_uart_t *)&cp->cp_dparam[PROFF_SMC1];
out_be16(&smp->smc_rpbase, 0x1ec0);
smp = (smc_uart_t *)&cp->cp_dparam[PROFF_SMC2];
out_be16(&smp->smc_rpbase, 0x1fc0);
}
out_be16(&cp->cp_cpmcr1, patch_params.cpmcr1);
out_be16(&cp->cp_cpmcr2, patch_params.cpmcr2);
out_be16(&cp->cp_cpmcr3, patch_params.cpmcr3);