sram.c (42249094f79422fbf5ed4b54eeb48ff096809b8f) sram.c (edfaf05c2fcb853fcf35f12aeb9c340f5913337f)
1/*
2 *
3 * OMAP SRAM detection and management
4 *
5 * Copyright (C) 2005 Nokia Corporation
6 * Written by Tony Lindgren <tony@atomide.com>
7 *
8 * Copyright (C) 2009-2012 Texas Instruments

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65 * device allows ARM11 but not other initiators for full size. This
66 * functionality seems ok until some nice security API happens.
67 */
68static int is_sram_locked(void)
69{
70 if (OMAP2_DEVICE_TYPE_GP == omap_type()) {
71 /* RAMFW: R/W access to all initiators for all qualifier sets */
72 if (cpu_is_omap242x()) {
1/*
2 *
3 * OMAP SRAM detection and management
4 *
5 * Copyright (C) 2005 Nokia Corporation
6 * Written by Tony Lindgren <tony@atomide.com>
7 *
8 * Copyright (C) 2009-2012 Texas Instruments

--- 56 unchanged lines hidden (view full) ---

65 * device allows ARM11 but not other initiators for full size. This
66 * functionality seems ok until some nice security API happens.
67 */
68static int is_sram_locked(void)
69{
70 if (OMAP2_DEVICE_TYPE_GP == omap_type()) {
71 /* RAMFW: R/W access to all initiators for all qualifier sets */
72 if (cpu_is_omap242x()) {
73 __raw_writel(0xFF, OMAP24XX_VA_REQINFOPERM0); /* all q-vects */
74 __raw_writel(0xCFDE, OMAP24XX_VA_READPERM0); /* all i-read */
75 __raw_writel(0xCFDE, OMAP24XX_VA_WRITEPERM0); /* all i-write */
73 writel_relaxed(0xFF, OMAP24XX_VA_REQINFOPERM0); /* all q-vects */
74 writel_relaxed(0xCFDE, OMAP24XX_VA_READPERM0); /* all i-read */
75 writel_relaxed(0xCFDE, OMAP24XX_VA_WRITEPERM0); /* all i-write */
76 }
77 if (cpu_is_omap34xx()) {
76 }
77 if (cpu_is_omap34xx()) {
78 __raw_writel(0xFFFF, OMAP34XX_VA_REQINFOPERM0); /* all q-vects */
79 __raw_writel(0xFFFF, OMAP34XX_VA_READPERM0); /* all i-read */
80 __raw_writel(0xFFFF, OMAP34XX_VA_WRITEPERM0); /* all i-write */
81 __raw_writel(0x0, OMAP34XX_VA_ADDR_MATCH2);
82 __raw_writel(0xFFFFFFFF, OMAP34XX_VA_SMS_RG_ATT0);
78 writel_relaxed(0xFFFF, OMAP34XX_VA_REQINFOPERM0); /* all q-vects */
79 writel_relaxed(0xFFFF, OMAP34XX_VA_READPERM0); /* all i-read */
80 writel_relaxed(0xFFFF, OMAP34XX_VA_WRITEPERM0); /* all i-write */
81 writel_relaxed(0x0, OMAP34XX_VA_ADDR_MATCH2);
82 writel_relaxed(0xFFFFFFFF, OMAP34XX_VA_SMS_RG_ATT0);
83 }
84 return 0;
85 } else
86 return 1; /* assume locked with no PPA or security driver */
87}
88
89/*
90 * The amount of SRAM depends on the core type.

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84 return 0;
85 } else
86 return 1; /* assume locked with no PPA or security driver */
87}
88
89/*
90 * The amount of SRAM depends on the core type.

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